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Open Access Article
1 - Multilevel governance of the metropolitan region applying new regionalism approach (Case study: metropolitan region of Mashhad)
Mozaffar Sarrafi naser nejatiMultilevel governance of the metropolitan region applying new regionalism approach (Case study: metropolitan region of Mashhad) Extended Abstract Introduction The root of many problems that cities face is outside of their realm. In fact, different studies on cities and MoreMultilevel governance of the metropolitan region applying new regionalism approach (Case study: metropolitan region of Mashhad) Extended Abstract Introduction The root of many problems that cities face is outside of their realm. In fact, different studies on cities and their suburbs in the entire of world indicate that cooperation between central city and their suburbs is necessary to address regional problems such as urban sprawl, unemployment, devastation of agricultural and open spaces, social injustice, environmental injustice and etc. Mashhad metropolitan is not an exception and faces with the problems such as urban sprawl, devastation of agricultural and open spaces and etc that originated at a higher level, the metropolitan region of Mashhad. The metropolitan region of Mashhad consists of four counties; Mashhad, Fariman, Chenaran and Binalud. The regional management in metropolitan region of Mashhad is not well integrated and thus, manifested in the chaotic and somehow win-lose competitions within the regions. New regionalism approach has the capability to reduce the rivalries and establishing collaborative milieu. For applying new regionalism it is needed to apply multilevel governance approach in regional scale. Methodology The aim of this article is to study regional management system based on new regionalism approach to address the problems of metropolitan region of Mashhad. Thus, firstly the shortcomings of new regionalism and regional management methods are analyzed. Then, current regional management system of metropolitan region of Mashhad is studied. Considering this, next, the best regional management method for covering the shortcomings in the metropolitan region of Mashhad is deliberated. Research review method is used in the literature review of new regionalism and regional management. Also in studying regional management system of metropolitan region of Mashhad, descriptive-analytical research method is used. The research method is based on analyzing secondary data and formal related documents about Mashhad’s spatial management system. In addition, the academic sources with regard to regional management and new regionalism have been reviewed to provide the theoretical framework for the problems. Findings and discussion New Regionalism is an approach which recognizes certain regions capable of cooperation and integration among their intra-regional institutions in pursue of political, socio-economic, cultural, and environmental synergies. The best way for applying new regionalism is governance. In fact governance is complement of new regionalism. New regionalism should be implemented step by step to ease the resistance to change as well as to give it time for tailoring the most appropriate institutional arrangement. And also the most efficient way for cooperation between regional actors is multilevel governance based on subsidiarity. Conclusion The finding suggest that multilevel governance system with the participation of all regional actors based on subsidiarity, can be an effective regional management system of metropolitan region of Mashhad. For the metropolitan region of Mashhad two-level governance is recommended; the first level is in the territory of metropolitan region with participation of state, public and private sector and civil society. The second level is in the territory of counties (Mashhad, Fariman, Chenaran and Binalud). Key words: new regionalism, multilevel governance, metropolitan region, Mashhad Manuscript profile -
Open Access Article
2 - Assess groundwater quality with help of Hydrochemical parameters (Case study: in Gheydar area, Zanjan Province)
Tahereh Janisarnavi SeyedVahid ShahrokhiBackground and Objective: the aim of this paper is the assessment of groundwater with respect to the chemistry and its subsequent impact on groundwater quality for drinking and irrigation consumption in the Qheydar area, Zanjan Province.Material and Methodology: In orde MoreBackground and Objective: the aim of this paper is the assessment of groundwater with respect to the chemistry and its subsequent impact on groundwater quality for drinking and irrigation consumption in the Qheydar area, Zanjan Province.Material and Methodology: In order to determine of physico-chemical parameters, anions, cations and heavy metals were sampled from the water sources of the study area and measured by different methods.Findings: The groundwater facies in the studied area belong to the bicarbonate to chloride type and generally hard due to the total hardness, Except for 2 Samples the others have hardness. In terms of EC and sodium adsorption ratio (SAR), Na% and residual sodium carbonate (RSC), the groundwater is Very salty in more of samples and totally unsuitable for agriculture. Moreover, dissolved heavy elements and Ions kind of As, Se, NO3 and SO4concentrations in the groundwater of the Qheydar area have the unsafe limits which recommended by the WHO.Discussion and Conclusion: Based on ionic ratios, Gibbs diagram, saturation index and multivariate analysis for indicating the sources of inorganic solutes in groundwater indicate carbonate sources and ion exchange have the greatest impact on water chemistry in the area. The metal index (MI) showed that some samples were non-drinking. Also, the results obtained from factor analysis showed the effect of salinity, agriculture, geology and faults in the Qeydar study area. Manuscript profile -
Open Access Article
3 - Survey of Heavy Metals Pollution in Surface Soils Around The Industrial Town of Ahvaz 2
Mosen Pournia Mir Hassan Moosavi Zeinab JassemiIntroduction: The objective of this study was to assess the extent and severity of heavy metal contamination in surface soils in the surrounding of the industrial town of Ahvaz 2. Material & method: Sixteen topsoil samples were collected at 0-5 cm depth and were ana MoreIntroduction: The objective of this study was to assess the extent and severity of heavy metal contamination in surface soils in the surrounding of the industrial town of Ahvaz 2. Material & method: Sixteen topsoil samples were collected at 0-5 cm depth and were analyzed by ICP-OES for Co. Cr, Cu, Ni, Pb and Zn. One sample was also investigated for mineralogy using X-ray. Result & discussion: The abundance of heavy metals measured in these topsoil decreases as follows: Cr>Ni>Zn>Pb>Cu>Co. The minerals in the analyzed sample are composed of quartz, calcite, and halite as major minerals with dolomite and alunite as minor minerals. Results indicate that concentration of heavy metal in surface soil is due to fine grain texture of soil, clay content, alkaline pH, CaCO3 content, Na+ and aluminum oxide content. According to geochemical criteria such as enrichment factor (EF), index of geo-accumulation (Igeo) and pollution index (PI), the soils of the study area are considered to be moderately contaminated with respect to Cr, Ni and Pb, and uncontaminated with respect to Co, Cu and Zn. The calculated results of EF, Igeo and PI of heavy metals are as the following: Ni>Pb>Cr>Zn>Cu>Co. Manuscript profile -
Open Access Article
4 - Investigation of hydrogeochemical characteristics and qualitative classification of Harzandat plain groundwater resources for various purposes, using hydrochemical methods
jamil rozrokh Asghar Asghari Moghaddam Ata Allah NadiriBackground and Objective: Inadequency of water resources or lack of appropriate resources have been among the challenges for human activities in the Harzandat plain due to shortage of rainfall. The purpose of this study was to evaluate geochemistry and hydrogeochemical MoreBackground and Objective: Inadequency of water resources or lack of appropriate resources have been among the challenges for human activities in the Harzandat plain due to shortage of rainfall. The purpose of this study was to evaluate geochemistry and hydrogeochemical anomalies and to determine groundwater usage (different uses for drinking, agriculture and industry) in the study area. Method: Due to the limited water resources in Harzandat plain, 16 groundwater samples were collected from wells, springs and qanats that sampling, and chemical analysis was carried out using standard procedures. Findings: The results of the Piper diagram show that the dominant type of groundwater is saline water in Harzandat plain. Calculation of the saturation index shows the interaction between water and rock and the state of saturation and super saturation relative to dolomite, calcite and aragonite minerals. According to the qualitative classification, the water in the study area falls within the range of moderate levle, and from the agriculture view point it is brackish water and unsuitable for irrigation. For industrial uses, some of the water resources have incrustation properties and they are partly corrosive, but most of the groundwater samples taken from the study area had incrustation properties and were unsuitable for industrial purposes. Conclusion: The results indicated the poor quality of drinking water, agriculture and industry in the central and northern parts of the plain. Also, based on the results from the Gibbs diagram, processes such as chemical weathering of mineral constituents of rock and evaporation influence the quality of groundwater in Harzandat plain. Manuscript profile -
Open Access Article
5 - Assessment of heavy metals concentrations and pollution in sediments of Almejogh Ophiolite Region (North-East of Iran)
Mahjoob Haghparast habiballah torshizian Rahim DabiriBackground and Objective: Heavy metals can be present at low concentrations in the soil and contaminate it. Since the study area is ophiolite in terms of lithology, it can increase the concentration of heavy metals in soil and water resources. In this study, the concent MoreBackground and Objective: Heavy metals can be present at low concentrations in the soil and contaminate it. Since the study area is ophiolite in terms of lithology, it can increase the concentration of heavy metals in soil and water resources. In this study, the concentration of heavy metals has been investigated and the pollution in sediments of Almejogh region (Fariman ophiolite) is evaluation. Method: To study the concentration of heavy metals and sediment pollution in the study area, 9 samples of sediment were taken from depth of 30 to 20 cm. The samples were transferred the environmental laboratories of Islamic Azad University of Mashhad and the amounts of pH and EC in soil were measured. 10 grams of soil (material passing through a 200-mesh sieve) was transferred to the ACME Laboratories of Canada in order to be analyzed for determining the amount of heavy metals by the induction plasma-mass spectrometry (ICP-OES) method. Discussion and Conclusion: Study of the correlation of heavy metals by Pearson coefficient, cluster analysis and principal components analysis showed that there are two different origins for geochemical distribution of heavy metals in sediment of the region. Ophiolite set of distribution of Cobalt, Nickel, Chromium and Pyroclastic and volcanic set as well as distribution of Iron elements, Molybdenum, Vanadium, Copper, Arsenic, Lead, Potassium and Cadmium were controlled. The pH of the soil in the study area fell within the pretty alkaline limit based on the classification of American soil science society. Evaluation of enrichment factor showed that Nickel has a very high enrichment and Arsenic and Chromium were in a high enrichment region. The above enrichment is indicative of anthropogenic origin. The pollution coefficient also showed that Nickel has the highest pollution in the region. The index of accumulation (of earth) also indicates t contamination of the sediment with Nickel in the region. Manuscript profile -
Open Access Article
6 - Concentrations of Pb, Zn, Cu and Cd and their distribution in the urban environment of Kerman, Iran
Mohammad Ali Hamzeh Mohammad Mirzaee Hossein MozaffariThis study investigated the concentrations of Pb, Zn, Cu and Cd in the urban areas of the city of Kerman to find out whether the measured concentrations of heavy metals in soil, rocks, surface and ground waters and sediments can be related to anthropogenic contamination MoreThis study investigated the concentrations of Pb, Zn, Cu and Cd in the urban areas of the city of Kerman to find out whether the measured concentrations of heavy metals in soil, rocks, surface and ground waters and sediments can be related to anthropogenic contamination or natural weathering of rocks. Heavy metal concentrations in these samples were determined by flame atomic absorption spectrometry and inductively coupled plasma mass spectrometry. These concentrations were compared with environmental investigation limits. The fresh rocks (limestone) contain relatively low concentrations of heavy metals as shown by background values. This study revealed that soil of Kerman is anomalously rich in some heavy metals. The accumulation of these contaminants is likely to accelerate as a consequence of rapid traffic as well as economic and industrial growth in the urban environment of the city. The characteristics of environmental geochemistry cycle are related to the pH range of rainwater (pH=6.8), high lead and copper values in dust particles (Pb>70 ppm and Cu>80 ppm), few anomalous values of lead in surface and ground water (0.01-0.12 ppm in surface water and 0.01-0.13 ppm in ground water), and very high values of lead (>10000 ppm) in some soil and sediment samples. The most polluted and dangerous cycles are caused by Sarasiab polluted creek (Pb and Zn values >10000 ppm) after Kerman garrison and soils close to battery, oil-change, and automobile-painting shops ( Pb>5000 ppm). However, Cd concentration was not a source of pollution in this region. Other pollution sources may be leachates, sewages, and landfills. Soil, sediment, and some of water samples had concentrations of metals (Pb>Cu>Zn>Cd) and the concentrations mostly exceeded the maximum permissible limit announced by the US EPA. A GIS system was developed for Kerman urban environment quality evaluation so that health risk management practices could be planned. Manuscript profile -
Open Access Article
7 - Identification of karst areas using Remote sensing and GIS method and its expansion in Zalem-Rud sub-basin of Sari in Mazandaran, Iran
Mohammad Ali Gholi Nataj Malekshah Davood Jahani Seyed Ramzan Mousavi Nader Kohansal Ghadimvand Seyed Hamid VaziriBackground and Objective Karst is a composite image of all the roughness, shapes, pores, and phenomena caused by water corrosion, above and below the surface, in various soluble geological formations, which cover about 15% of the world's exposed rocks. Despite the impor MoreBackground and Objective Karst is a composite image of all the roughness, shapes, pores, and phenomena caused by water corrosion, above and below the surface, in various soluble geological formations, which cover about 15% of the world's exposed rocks. Despite the importance of karst areas in the past, today, the study, identification, spatial analysis and management of these areas are of very interest to geologists, hydrologists, hydrogeologists, eco-tourists, geotourists and environmentalists at various scales. Karst phenomenon also has a special place in various dimensions from the point of view of geology and geomorphology, because the causes and methods of dissolution processes and forms and their extension in rocks and minerals are of great importance to East Mazandaran, especially in the study area, is geologically one of the areas with karst process potential and has been less studied due to environmental conditions, especially vegetation and access roads. This study is focused on identifying karst areas and their extent using RS and GIS method in the Zalem-Rud Sari basin in Mazandaran province in northern Iran. In order to identify karst areas and physicochemical characteristics of existing aquifers, it was first necessary to identify karst areas and then assess their physicochemical status. In the first step, using Landsat, ASTER and SRTM satellite data, geological maps, weather information and field visits, factors affecting karstification such as rock types, Fracture lineaments, vegetation, climate, condition of the drainages and the slope of the topography are extracted. It should be noted that in this step, to obtain a better result, fuzzy logic and Hierarchical Analysis Process have been used. In the second step, in order to investigate the physicochemical condition of the aquifer, the chemical parameters of some springs are analyzed and the dissolution parameters, saturation indices, the origin of water-soluble components and the general flow system in the existing aquifers are determined.Materials and Methods In this study, the composition and distribution of rock, based on field visits and georeferenced geological maps of one hundred thousandths of Behshahr and Sari, have been done. Three methods of manual, automatic and semi-automatic have been used to extract the lineaments due to fractures. In the manual method, the lineaments are highlighted and extracted by applying High Pass filters, PCA and the color combination of Landsat 8 satellite data. In the automatic method, the Segment Tracing Algorithm (STA) in PCI software is used. In the STA algorithm, linear pixels are identified based on the degree of gray difference and then converted to vectors based on RADI, GTHR, LTHR, FTHR, ATHR and DTHR parameters. The Normalized Difference Vegetation Index (NDVI) was used to detect and extract vegetation status on OLI sensor data from the Landsat 8 satellite. To generate DEM, photogrammetric techniques were performed on a pair of stereo images of ASTER sensor in Idrisi software based on parametric variables of external and external orientations and ground control points (GCPs). The topographic slope of the area has been calculated by DEM and based on the degree in GIS and its map has been prepared. Based on the weather data of the General Meteorological Department of Mazandaran Province, the weather condition is determined by the isothermal, isohyetal and isoevaporation curves and the type of weather is determined by the De Marton method.Results and Discussion The result of the above activities has been the production of lithological maps, density and distance from fracture lineaments, density and distance from drainages, topographic slope, rainfall and vegetation. Due to the different criteria used in the generated maps and the need for a single, comparable and proportionate criteria for combining information layers, fuzzy logic has been used. In this case, all layers, except lithology, which has a definite boundary and is a function of Boolean logic, are fuzzy and then extracted as fuzzy layers in GIS. On the other hand, because the weight and effectiveness of the eight factors affecting the occurrence of the karst phenomenon are not the same, the Hierarchical Analysis (AHP) method has been used to determine the preference and prioritization of these factors. And the participation rate, in other words, the weight of each criterion with an incompatibility coefficient of less than one percent has been calculated in Expert Choice 12 software. Finally, by the weighted linear combination (WLC) method, fuzzy raster layers based on their effective weight are combined with Compromise Operator or Gamma and the karst distribution map is extracted with different probability coefficients in the study area. In the next step, in order to investigate the physicochemical status of the aquifers and evaluate the karst phenomenon, 18 springs with equal flow and more than three litres per second were selected and evaluated using SPPS, RockWorks2016 and PHREEQC2.6 software. In addition to extracting hydrogeochemical tables and graphs, the saturation index of various minerals has also been calculated.Conclusion The results of this study show that the karst phenomenon has the most spread in the central part and the lineaments resulting from fractures have played the most role in the formation of this phenomenon. The water type of these springs is calcium-magnesium bicarbonate and according to the Gibbs diagram, the role of aquifer rocks in determining the chemical composition of water is very clear. Also, the saturation indices of minerals and the type of flow in groundwater reservoirs are diffuse and diffuse-duct flows. To this research, the use of new remote sensing technology and GIS increases accuracy and speed and reduces costs in karst studies. Manuscript profile -
Open Access Article
8 - Origin and development of Skarn-Forming fluids from the Band-e-Narges Skarn Iron ore, Central Iran
Maliheh Nazari Mohammad Lotfi Nematallah Rashidnejad omran Nima Nezafati -
Open Access Article
9 - Geological setting of iron oxide-apatite deposits in theBafq district, central Iran with an emphasis on mineralogical,petrographic, and geochemical study of the Sechahun deposit
Azat EslamizadehThe objective of this research is to determine all processes in the magmatic evolution and related hydrothermal activities that created the volcanic rocks and associated ore-forming systems of the Bafq ‎mining district. Several iron oxide-apatite (IOA) deposits were MoreThe objective of this research is to determine all processes in the magmatic evolution and related hydrothermal activities that created the volcanic rocks and associated ore-forming systems of the Bafq ‎mining district. Several iron oxide-apatite (IOA) deposits were investigated in this area with a focus on the Sechahun ore deposit. The Bafq ‎mining district is well known for hosting significant IOA ore deposits with several million tons of iron ore and with some economic resources of rare earth elements. To achieve the goals of this research, detailed petrographic, fluid inclusion microthermometry, and lithogeochemical studies were obtained and supported by geological investigations at both local and regional scales. Textural, mineralogical, and fluid inclusion evidence indicates the ore genesis by fluid mixing. Magmatic-hydrothermal iron oxide-apatite ore precipitated during circulation of deuteric solutions within the host rocks at the early stage of mineralization. The mesothermal iron oxide ore of the Sechahun deposit was emplaced at the relatively shallow depths, while the near-surface epithermal hematite-jaspilite ore formed in a subaqueous environment. The most likely source of iron oxide-apatite mineralization would be a combined magmatic hydrothermal to convective hydrothermal model ‎with magmatism originating from the upper mantle and related bimodal volcanism resulting in felsic volcanic rocks. Rifting of the continental lithosphere during the Early Cambrian was associated with emplacement of a highly fractionated bimodal ‎magmas along the regional ‎fracture-fault lines, a major controlling factor for mineralization processes in the Bafq district. ‎ Manuscript profile -
Open Access Article
10 - Integration of geological and geophysical studies in order to mineral exploration at the Zaveh mineralization area, NE Iran
Azadeh Malekzadeh Shafaroudi Bahareh Boroziniat Mohammad Reza Haidarian Shahri -
Open Access Article
11 - Genesis and geochemical evolution of the Mio-Pliocene volcanic rocks in the SW of Bostanabad, NW Iran: A comparison with the classic Adakite
Farahd Pirmohammadi Alishah -
Open Access Article
12 - Geochemistry and diagenetic evidence of middle-late Permian deposits, Northern Iran
Alireza Chegini Iraj Maghfouri Moghaddam Mohamahosein Adabi Masoud Lotfpour -
Open Access Article
13 - Petrology and tectono-magmatic environment of the volcanic rocks of West Torud – Iran
Abdollah Yazdi Elham Shahhosseini Farhad Moharami -
Open Access Article
14 - Facies analysis, sedimentation conditions and geochemistry of clastic deposits of Ashin formation (Late Ladinian-Early Carnian), Northeast of Nain, East of Central Iran
Payman Rezaee Mohammad Khanehbad Moasoumeh Ezatifar Seyedeh Akram Jooybari Kiamars Hosseini -
Open Access Article
15 - Geology and geochemistry of skarn deposits in the northern part of Ahar batholith, East Azarbaijan, NW Iran
Habib Mollai Abdol Majid Yaghubpur Reza Sharifiyan AttarPrincipal Skarn deposits along the northern margin of the Ahar batholith from west to east include Mazraeh, Vine and Gowdoul skarn deposits. Among these skarn deposits, the Mazraeh Cu-Fe Skarn deposit is the most typical skarn deposit in the NW Iran. This skarn deposit MorePrincipal Skarn deposits along the northern margin of the Ahar batholith from west to east include Mazraeh, Vine and Gowdoul skarn deposits. Among these skarn deposits, the Mazraeh Cu-Fe Skarn deposit is the most typical skarn deposit in the NW Iran. This skarn deposit is located 5 km. north of Mazraeh village and 20 km north of Ahar town. The origin and development of the skarn can be related to the granitic intrusion of Oligo- Miocene age which has intruded a sequence of calcareous rocks. On the basis of petrological considerations the skarn can be subdivided into Exoskarn, Endoskarn and Ore skarn. The main mineral constituents of the skarns are garnet, magnetite, calcite, chalcopyrite, epidote, hematite and pyroxene, accompanied by quartz, pyrite, bornite, coevalite, chalcocite, plagioclase and chlorite. The bulk chemistry and spatial variation characteristics indicate that the endoskarn was the result of interaction between Mazreah granodiorite with crystalline limestone and metasomatic alteration through hydrothermal fluid enriched in Mg, Fe, Cu, P, Ag, Zn, Pb, Cd, Mo, Mn, etc. These elements point toward a magmatic source, and have been contributed to the system from the magma as well as the host rock. The crystalline limestone was the source for Ca and Mg in case of endoskarn. The transformation of granodiorite into endoskarn was accomplished by addition of 1.4 to 15% CaO along with 7.17% of total iron into the granodiorite was accompanied by depletion of about 15.5% SiO2 (average 53.5%). Manuscript profile -
Open Access Article
16 - A comparison between geochemistry of metapelites of Hindoli and Jahazpur Groups: Two Precambrian low-grade metasedimentary sequences in NW India
A. Saxena M.K. Pandit B.S. BaliThe Bundelkhand-Aravalli craton is the most important lithotectonic unit in the central and western India where Paleoproterozoic Aravalli Supracrustal sequence has been deposited over an Archaean basement, the latter also known as the Banded Gneiss Complex (BGC). A NE-t MoreThe Bundelkhand-Aravalli craton is the most important lithotectonic unit in the central and western India where Paleoproterozoic Aravalli Supracrustal sequence has been deposited over an Archaean basement, the latter also known as the Banded Gneiss Complex (BGC). A NE-trending linear metasedimentary sequence, designated as the Jahazpur Belt occurs along the eastern fringe of the Aravalli Supergroup. This belt comprises low-grade metasedimentary assemblages of Hindoli (lower unit) and Jabhazpur (upper unit) Groups. Although predominantly pelitic in composition, both the groups show subtle variations in geochemical characteristics, such as in SiO2, Al2O3, TiO2 etc. and critical trace element (Th, Sc, Rb, etc.) characteristics. CIA (Chemical Index of Alteration) values vary from 73 to 79 in Hindoli metapelites and from 71 to 81 in Jahazpur metapelites indicating moderate to high degree of weathering and alteration in both the cases. The CIA data underline a granodioritic to tonalitic source composition for Hindoli metasediments and a relatively more felsic source (granitic) for Jahazpur metapelites. A probable and likely provenance for the Hindoli metapelites could be analogous to the Banded Gneiss Complex (BGC) which includes TTG gneisses as a major component. Manuscript profile -
Open Access Article
17 - Geochemistry, Paleoclimatology and paleogeography of the Northeast Region of the Persian Gulf( Case Study from outhern Hormuzgan, Iran)
Mojtaba Taghizade Khosro Khosrotehrani Razieh Lak Seyed Ali Aghanabati Hamidreza PeyrowanThe Wisconsin glaciation was started a approximately 125,000 years ago and reached its lowest extend between 20,000 to 21,000 years ago during which the sea level fell 120 to 130 meter. At the end of the ice age, about 18,000 years ago, the sea level increased and reach MoreThe Wisconsin glaciation was started a approximately 125,000 years ago and reached its lowest extend between 20,000 to 21,000 years ago during which the sea level fell 120 to 130 meter. At the end of the ice age, about 18,000 years ago, the sea level increased and reached its present level about 5,000 years ago. The Persian Gulf was exposed in the last glacial moment (LGM). After this moment, the sea level prograted toward the Persian Gulf Basin and reached 1 to 3 meters higher than present levels 4,000 to 6,000 years ago. This study was focused on paleoecology, sedimentation and sea level changes in the northeastern portion of the Persian Gulf and shallow marine area in southern Hormuzgan, Iran near the ports of Bandar Abbas and Shahid Rajaee. Hormuzgan Province is located to the north of Strait of Hormuz. In this study, a core with a length of 10 meters was taken from late Holocene sediments in the northeast marine region of the Persian Gulf using a rotary drilling system. Then different sedimentary types were studied and separated and samples were sent for ICP and XRD elementary analysis and dating. As is already known, increasing and decrease of sea levels are related to moist weather and arid conditions respectively. Additionally, it is proved that variation of elements such as Al, Cr, Fe, K, Mg, Mn, Ti, and Zn have a direct relation to sea level changes. It is shown that the variations of Sr and Ca having a reverse relation to sea level changes. Geochemical study and dating on sediments shows that although the sea level rose 10,000 years ago in the studied region, 3,700 to 6,800 and 7,900 to 9,300 years ago, the sea level and rate of precipitation in this area was higher than the mean. This illustrates an increase in rain and humidity during these two periods Manuscript profile -
Open Access Article
18 - Assessment of Heavy Metal Contamination in Soils around of Khash Cement Plant, SE Iran
Mohammad Elyas Moslempour Sara Shahdadi20 soil samples collected from the vicinity of the Khash Cement plant, Iran, were analyzed for As, Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb and Zn using ICP-OES. The results revealed that the metal distribution were in a fluctuating manner considering various distances and direct More20 soil samples collected from the vicinity of the Khash Cement plant, Iran, were analyzed for As, Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb and Zn using ICP-OES. The results revealed that the metal distribution were in a fluctuating manner considering various distances and direction from the cement facility. However, it was observed that the mean concentration of the soil samples has no special trend with respect to distance and direction from the facility for most metals. However, the cement plant is a major source responsible for metal distribution, but it seems that uniformity in topography and vegetation is major factor to control this kind of distribution pattern. According to the index of geoaccumulation, the soils of the study area are considered to uncontaminated with respect to As,Co, Cr, Cu, Mn, Mo, Pb and Zn. Cd and Ni shows uncontaminated to moderated contaminated characteristics. The result of enrichment factor show that, with the exception of Cd and Ni enrichment, all the metals were deficiency to minimal enriched in all the distances and directions considered for the study. The results of the metal analysis indicated that the environment under study is not at risk seriously.. Manuscript profile -
Open Access Article
19 - I-Type magmatism in granitoids from e-ne Tafresh
Shiva Ansari Mohammad Hashem Emami Majid Ghaderi Khosro Khosro-TehraniThe polyphase Nevis granitoid pluton extends 70 km2, is located in Urmieh-Dokhtar zone, shows variationwhich in terms of emplacement depth is related to epizonal to mesozonal environments [16], and in range ofacidic to basic including tonalite, granodiorite, granite, mo MoreThe polyphase Nevis granitoid pluton extends 70 km2, is located in Urmieh-Dokhtar zone, shows variationwhich in terms of emplacement depth is related to epizonal to mesozonal environments [16], and in range ofacidic to basic including tonalite, granodiorite, granite, monzonite, diorite and gabbro. The mentioned pluton isintruded to different units of volcano-sediments (according to the 1:250000 Geological Survey map) of Eocenesequences (E1, E2, E3, E4,E5, E6) and has imposed a contact metamorphism in Eocene [3]. Existance of maficenclaves in the main body could confirm the initial basic-intermediate magma replacement. According to thecoarse granular texture of these basic-intermediate rocks can be said that they have been replaced in crust middledepths (mesozonal) and in later stages, a large size of tonalitic magma intruded to the region shows variation intexture. Part of this tonalitic magma get to higher levels and show porphyry textures. Then they involved inmylonitic textures under tectonic stresses. Stress effects produced subgrain minerals and undulose extinction.The final phase of plutonism was made up leucocratic micro-granite and granophyres, comparing to tonalite theyhave limited volume and they are the most shallow plutonism in the area. Another pervasive process had beenthe effects of heat and fluid (hydrothermal process) caused by successive injections which had differentinfluences on the rocks, and created secondary mineral paragenesis of greenschist facies including epidote,chlorite, calcite, albite, sphene and opaque minerals, represent the geothermal system activities in differentphases and the formation history of polyphase Nevis pluton.Based on field surveys, lithology and geochemical, granitoids are I-type. These rocks are calc alkaline andmetaluminous. Manuscript profile -
Open Access Article
20 - Potentially contaminant sources assessment and hydrogeochemical characteristics of Chromium in Golbou water resources, North Torbat Heydarieh, Khorasan Razavi
Ali Ghasemi Mohammad Javad Nematollahi Hessamaddin Taghavi SaniThe study area, located in north Torbat Heydarieh, contains ophiolitic units comprised chromium-bearing minerals such as Spinel. The results obtained from water samples analysis using XRF indicate high chromium concentrations in ophiolite complex as major source. Serpen MoreThe study area, located in north Torbat Heydarieh, contains ophiolitic units comprised chromium-bearing minerals such as Spinel. The results obtained from water samples analysis using XRF indicate high chromium concentrations in ophiolite complex as major source. Serpentinite, the dominant lithology in the area, comprises the excess chromium concentration, being responsible for chromium-polluted water resources. As well as average chromium concentration severely decreases from serpentinite to other lithological units. Hydrogeochemical investigation of water resources indicates that the major cations and anions are in the order of Na+>Mg2+>Ca2+>K+ and Cl->HCO3->HSO42-, respectively. Regarding piper diagrams, water samples reflect a variety of facies (water types) including Na-HCO3 (3 samples), Na-Cl (3 samples), Ca-HCO3 (3 samples), Mg-Cl (3 samples) and Mg-HCO3 (2 samples). Comparing with WHO (2011) permissible chromium limit, water resources of the study area reflect excess chromium concentration. Due to limited chromite mining in the area, the anthropogenic activity could not be responsible for the elevated chromium level in the water resources, suggesting the dominant geogenic source of chromium. The abundance of Fe-Mn oxy-hydroxides in most sites of the area leads to chromium oxidation from Cr3+ to Cr6+. Average values of pH> 7.6 and DO> 7.67 mg/l of the water resources also indicate that Cr chiefly occurs as Cr6+, and Cr2O72- and CrO4- deposits. Manuscript profile -
Open Access Article
21 - Mineralogy and geochemistry of host rocks of in the Jalal Mn ore Deposit ( South of Qom)
Mansore Mahdavi محمد Yazdi M.H EmamiJalal Manganese ore is located in the southwest of the Qom. The area is located in Uromieh-Dokhtargeological zone of Iran. The base and host rock of the area include Eocene volcanic rocks such as basalt,andesite, trachyte, rhyolite, andesite-basaltic lava and spillitic MoreJalal Manganese ore is located in the southwest of the Qom. The area is located in Uromieh-Dokhtargeological zone of Iran. The base and host rock of the area include Eocene volcanic rocks such as basalt,andesite, trachyte, rhyolite, andesite-basaltic lava and spillitic lava. The lavas are more pillow types. Theyounger andesite-basaltic dykes have been intruded to these volcano-sedimentary rocks of the area.TheMn- mineralization was hosted in the volcano-sedimentary rocks of the area. Hangingwall and footwall ofore are andesite-basaltic lava and spillitic lava. The ore mineralization was hosted as vein type withinfaults, joints and fractures. The main direction of ore mineralization is NW-SE in the several parallellayers. These layers have been known as A, B, D ore layers in the Jalal area. The surface outcrop of orelayers is about 2km and have been cut by several local faults, mainly in NW of the area. The new drillingsshow that the dip and direction of the ore layers have been changed in the dipper parts mainly to the NE.The ore minerals are mainly pyrolusite, Psilomelane, with Mn oxides and non-ore minerals are mainlycalcite and quartz. Field survey, geochemical and mineralogical studies show that the mineralization isvein epithermal type. Manuscript profile -
Open Access Article
22 - Environmental Geochemistry and Geology of Dusts in Ray City
Mohammad Yazdi Hamideh Soltanzadeh Aida BiatiIn the following research 19 samples were collected from dust of the main streets of Ray City in dry conditionsof the summer and wet conditions of the winter in heavy traffic time of evening. The samples were analyzed byICP-OES for 49 elements such as Pb, Zn, and Cu, As MoreIn the following research 19 samples were collected from dust of the main streets of Ray City in dry conditionsof the summer and wet conditions of the winter in heavy traffic time of evening. The samples were analyzed byICP-OES for 49 elements such as Pb, Zn, and Cu, As, Fe, Ni, Cr, Cd, Mn and Bi. Also, 15 samples wereanalyzed by XRF to determine major oxide and minor elements. The enrichment factors and Mullergeoaccumulation index were calculated for these samples. Data processing shows enrichment in Ag ٬Pb ٬Zn ٬Cu ٬As ٬S ٬Ba ٬U ٬Zr ٬Sr, Hf levels relative to earth's crust. The results of enrichment factors indices indicatethat Ag ٬Pb ٬Zn ٬Cu, Hg ٬S٬ have the highest enrichment level. Muller geoaccumulation index is representedhigh pollution range for Ag ٬Pb ٬Zn ٬S in all streets. The results show that this high pollution are related toTehran refinery, metallurgical activities, erosion of Holly Shrine of Abudalazim and vehicles (fossil fuelcombustion). Finally we used one-step chemical separation method to calculate the anthropogenic and nonanthropogenic ratio. The samples were analysed by ASS for Pb, Mn, Fe, Cu, Zn, Ni, Co. The results show thatthe anthropogenic effects of these elements are more than that of non- anthropogenic factors. It is because of thegreat influence of using natural resources in the productions of concrete factory Manuscript profile -
Open Access Article
23 - Geochemistry, petrography and tectonic provenance of the upper devonian sandstones of Ilanqareh formation, nw Iran
عادل Najafzadeh M.H Adabi Mahdi Jafarzadeh KH KHosro-TehraniSiliciclastic sediments of Ilanqareh Formation in Ilanlu section with Upper Devonan (Famenian) age,are composed of varicolored sandstones and interlayerd dark-colored shales. Petrographic andgeochemical studies reveal that these sandstones have a quartzarenitic composit MoreSiliciclastic sediments of Ilanqareh Formation in Ilanlu section with Upper Devonan (Famenian) age,are composed of varicolored sandstones and interlayerd dark-colored shales. Petrographic andgeochemical studies reveal that these sandstones have a quartzarenitic composition. The provenance,weathering and tectonic setting of the sandstones of Ilanlu section have been assesed usinggeochemical studies. Geochemical study (major and trace elements) show that the sandstones of Ilanlusection sourced from cratonic provenance and affected by warm and humid paleoclimate conditionsand finally deposited in a passive margin tectonic setting. With attention to paleogeographicalconditions of Iran at late Devonian (northern margin of the Gondwana supercontinent) and location ofAzerbaijan (forehead of southern coast of the Paleo-Tethys), hypothesis of entrance of sediments fromsouthern parts (Arabian-Nubian Shield) and extremely their deposition on a passive margin of thePaleo-Tethys ocean, is considered. Manuscript profile -
Open Access Article
24 - Investigation of Hydro Geochemical Changes in Groundwater Case Study: Hamedan-Bahar Plain
Sajad Fazel Tavasol Ali Ahmadi Mostafa Safari Komil Reza DehghaniInvestigating of the changes in groundwater quality in the planning and management of water resources in each region is of great importance. In order to analyze the water quality hydro chemical analysis of 26 shallow wells has been. The major ions and the physical param MoreInvestigating of the changes in groundwater quality in the planning and management of water resources in each region is of great importance. In order to analyze the water quality hydro chemical analysis of 26 shallow wells has been. The major ions and the physical parameters of the water samples were measured. With the aim of analyzing the concentration changes of ions, cluster analysis methods and saturation indices along with statistical analysis and spatial graphic methods were investigated. Results indicate that this plain encounters negative budget and a decrease in the quality of groundwater; and the chemical type and facies of water in this field is (ca-Hco3). Plain water resources are divided into three groups in terms of quality. Due to the influence of artificial recharge dams in areas of aquifer discharge, water quality has improved. All measured samples are under saturated with respect to anhydrite, and s upersaturated with respect to calcite and dolomite. Manuscript profile -
Open Access Article
25 - Environmental Hydrogeochemistry of hot springs in Vartoun, Kouhpayeh, Esfahan
mohamad yazdi sara rezahaji pedram naviVartoun’s hot springs (Imam Reza and Morad) are located in 12Km from Vartoun Village and about 70 Km from the east of Esfahan. Petrographic and field studies show that most of the base rocks of these hot springs are Eocene limestone with composition of carbonate MoreVartoun’s hot springs (Imam Reza and Morad) are located in 12Km from Vartoun Village and about 70 Km from the east of Esfahan. Petrographic and field studies show that most of the base rocks of these hot springs are Eocene limestone with composition of carbonate (calcite or aragonite), iron oxide and hydroxide and clay minerals. According to the Wilcox diagram it is recognized that the water of these springs are saline and not appropriate for agricultural purposes. The result of Schoeller diagram indicating the amount of salt of the water in this region is higher than drinking water standard and according to Piper-tip diagram, the water in these three springs is sulfated and high saline type. The geochemical data show that the chemical compositions of the spring are not harmful for environment according to internal and international standards. The results of the research show that these waters are not suitable for industrial and irrigation purposes, but can be utilized for water treatment Manuscript profile -
Open Access Article
26 - evaluation of hydrogeochemical processes of alluvial aquifer of the Golgir plain
hadi tahmasbi nezhad abdoreza kaboliIn order to evaluation of processes are effective on mixture groundwater of Golgir plain,saturated indexes and mixture curves is calculated and drown for dry period (Shahrivar1385) andwet period (Isfand1385). Considering development of Sulfate and Limestone formations a MoreIn order to evaluation of processes are effective on mixture groundwater of Golgir plain,saturated indexes and mixture curves is calculated and drown for dry period (Shahrivar1385) andwet period (Isfand1385). Considering development of Sulfate and Limestone formations around theGolgir plain, values of saturated indexes of sulfate minerals calculated with PHREEQC computercode in the boundary of the Golgir aquifer. The result shows that they are sub saturated in the mostof samples and different seasons. This means these minerals are solutable in the water. In wetperiod saturated index of the most of samples is decreased because of increasing groundwaterrecharge caused from rainfall. As in sampling of dry period, the most of samples were in conditionsaturated to supersaturate from Calcite and Dolomite. On the base of the Mg/ (Mg + Ca) curveagainst to So4/ (So4+HCo3) curve is determined the water samples of Golgir deep drink wells are inCalcite solution domain but Cement factory wells is placed in south of the Golgir plain, is tend todolomite solution domain. Based on the result of mixture curves, Sulfate and Carbonate mineralssolution processes is the main factor controls chemical mixture of water. Type of sedimentation andgeology formations of region is the most important effective factor on chemical mixtured of water. Manuscript profile -
Open Access Article
27 - Petrography, Geochemistry and Mineralization of Pb in Hezarabad Area (Ashtian)
Alireza Haddadpour Raziyeh Mohammadi Haddi GolzarHezarabad area is located 5 km at south east of Ashtian, Markazi Province. Structurally, the area is located in theUrmia-Dokhtar magmatic belt of Iran. The basement rocks of the area are pelagic limestone, lithic tuffs, andlimestone to sandy limestone, marl, conglomerat MoreHezarabad area is located 5 km at south east of Ashtian, Markazi Province. Structurally, the area is located in theUrmia-Dokhtar magmatic belt of Iran. The basement rocks of the area are pelagic limestone, lithic tuffs, andlimestone to sandy limestone, marl, conglomerate, andesite lava and shale. Andesitic and tuff are the main hostrock of mineralization. The mineralization mostly is vein types in four trends which follow NE-SW trend oflocal faults. The mineralization can be seen also as disseminated, breccia to fills fractures and pore-spaces types.The most important ore minerals are galena, cerosite and sphalerite. The galena is associated mostly barite inlocal faults. The second important mineral is sphalerite which can be seen mostly in tunnels. 40 samples wereanalyzed by Inductive Coupled Plasma Mass Spectrometry (ICP-MS) for Pb, Zn, Ag, As, Cd, Co, Cr, Cu, Mo,Ni. The data processing indicates high anomaly for Zn and Pb and relatively anomaly for Cu, Ag, As, Mo. Theaverage value of Pb is 34525 ppm and average value of Zn is 6108 ppm. The Mo content is reach up to 1182ppm. According to correlation diagrams, there is a high correlation between Pb and Ag and also Ag and As. Itshows that the galena is the main host of these elements. Manuscript profile -
Open Access Article
28 - Factors affecting the Distribution of some Heavy Metals with Geo-pedological Conditions in different soils near Zanjan province
Ali AfshariThe present study was aimed to evaluate role of Pedogenesis factors and Geo-pedological conditions on Distribution and Chemical speciation of some heavy metals. For this purpose, number of 15 profiles on different parent materials include Granite (Gr), Basalt (Ba), Ande MoreThe present study was aimed to evaluate role of Pedogenesis factors and Geo-pedological conditions on Distribution and Chemical speciation of some heavy metals. For this purpose, number of 15 profiles on different parent materials include Granite (Gr), Basalt (Ba), Andesite (An), Porphyritic (Pr ), Volcanic tuff (Tu) Limeston (Li), Conglomerates (Cg), Shale (Sh), Phyllites (Ph), Sandstone (Sa), Dolomite (Do) and Alluvium (Qa) were excavated around in Zanjan. The concentration and distribution of the elements Cr, Co, Cd, Zn and Pb are more controlled by lithogenic factors while elements Cu, Mn and Ni were affected by bio-geochemical processes factors. Depletion rate was obtained in order of following: (Zn>Co>Cd=Pb>Mn=Cr=Ni=Cu). In the early stages of pedogensis, bedrock and minerals and in its later stages, some soil processes such as calcium carbonate equivalent (CCE), acidity (pH), organic matter and clay create different patterns of enrichment-depletion. Distribution of elements in Entisols, Mollisols and Inceptisols, respectively, were controlled by parent material lithology, organic matter and redistribution calcium carbonated. In Sequential extraction, residual fraction was dominant component in all elements. For cobalt, nickel oxide fraction, for lead carbonate fraction, for copper and zinc, organic fractions were observed. Mobility factor for various elements in the surface horizons were (Pb>Co>Ni>Cu>Zn), respectively. results of extract measured by DTPA-extractible in various elements for lead, copper, nickel, zinc and cobalt were, 2.04, 1.81, 0.84, 0.42 and 0.30 mg/kg respectively and the highest value was observed in surface soil horizons Manuscript profile -
Open Access Article
29 - Geochemistry, Geodynamic Setting and Petrological processes of Diorite to Gabbro Igneous Rocks in the Natanz Intrusive Complex
Razieh MohammadiThe Natanz intrusive complex (NIC) is located in the West of Natanz city and in the Orumieh -Dokhtar magmatic belt. Natanz complex is composed of two types of mafic igneous rocks, including gabbro and diorite. The gabbroic unit was cut by granitoid rocks, so gabbro is t MoreThe Natanz intrusive complex (NIC) is located in the West of Natanz city and in the Orumieh -Dokhtar magmatic belt. Natanz complex is composed of two types of mafic igneous rocks, including gabbro and diorite. The gabbroic unit was cut by granitoid rocks, so gabbro is the oldest igneous rock units in the area. The geological study of the intrusion of diorite to gabbro igneous rocks has been done by petrology and geochemical studies.The intrusive rocks of the area all belong to a common magma, which has been subdivided in its magma chamber after the first replacement. The distribution and pattern of the rare earth elements (REE) are the same and these igneous rocks are enriched in LREE. The similarity of the REE patterns in these rocks, is an evidence that they have common origin. According geochemical and geodynamical studies on diorite to gabbroic rocks in the area, these igneous rocks show sub alkaline, calk alkaline and meta aluminous to per aluminous natures. Because amount of H2O and evaluated pressure, the crystallization liquid phase had 950 – 1000 °C for intermediate intrusive rocks in Natanz complex. This is because of more calcium content. The behavior of major and trace elements especial in silicate minerals suggested that fractional crystallization of magma was the main role in the magmatic evolution of these rocks. The position of incompatible elements is more in harmony with subduction. The high amount of plagioclasein gabbros show that crystallization of magma happened in high pressure. The petrological evidences indicate that the igneous rocks were formed in volcanic arc environment. Manuscript profile -
Open Access Article
30 - Assessment of heavy metal pollution in the surface sediments of Gamasiab River in Nahavand city
Maryam Saleh Mohsen Rezaei Ata Shakeri Ashkan JahandariThe objective of this study was to evaluate heavy metals such as As, Cd, Ni, Cr, Pb, Cu, V and Ni in the surface sediments of Gamasiab River. This river located in west of Iran and it is the most important river in Nahavand city, a wide range of human activities take pl MoreThe objective of this study was to evaluate heavy metals such as As, Cd, Ni, Cr, Pb, Cu, V and Ni in the surface sediments of Gamasiab River. This river located in west of Iran and it is the most important river in Nahavand city, a wide range of human activities take place along the river. Examples include fish farming and agriculture activities. So the assessment of heavy metals in sediments of the river is necessary. The results show that the heavy metal concentration in the sediments decreased in the order Cr>Zn>Ni>As>Pb>Co>Mo>Cd. Variety of methods used to evaluate sediment contamination with heavy metals as enrichment factor, pollution load index, comparison of sediment quality guidelines and potential ecological risk of heavy metals. According to enrichment factor index, As and Cd have anthropogenic originates while Cr and Ni have geogenic originates. Some stations show a very high degree of Pb contamination. Samples 1 , 3 and to a lesser extent 2,6 and 8 showed a highest degree of toxicity. The correlation coefficient was used for communication between the elements. Results show that the anthropogenic Pb, Cu, Zn, As and Cd inputs were mostly related to the urban and Agriculture activities. Manuscript profile -
Open Access Article
31 - Determination of origin of major ions in groundwaters of Astaneh-Koochesfehan area
مسعود Eshaghpour محمد ManshoriSefidrood river watershed is located in 9 provinces of Iran consist of 3 subwatershed of Ghezelozan,Shahrood and endparts of Sefidrood. In order to determination of origin of major ions in aquifer ofAstaneh-Koochesfehan study area that is located in central parts of Gil MoreSefidrood river watershed is located in 9 provinces of Iran consist of 3 subwatershed of Ghezelozan,Shahrood and endparts of Sefidrood. In order to determination of origin of major ions in aquifer ofAstaneh-Koochesfehan study area that is located in central parts of Gilan province and end parts ofSefidrood River, data from 25 deep and shallow quality wells with maximum depth of 150m during 11period from September 2003 to September 2008 and 4 hydrometry station on 3 mentionedsubwatersheds was analyzed. Pole Astaneh and Beyne Rahe Roodbar are located in end parts ofSefidrood subwatershed and Shahrood and Gilavan are located on Shahrood and Ghezelozan riversubaequentely.The study area is located between longitudes of 370000-430000 m and latitudes of4099000-4150000 m in UTM system in zone of 39N. Astaneh Ashrafiyyeh is the largest city in thestudy area. Lithology of the study area consist of deltaic deposits and Sefidrood River alluvialsspreading from Emamzadeh Hashem to Sefidrood Delta in Caspian sea coast as a fan with a head inthe south and a long side in the north. Well samples are classified as natural waters and classified asC3S1 when Sefidrood samples in Gilevan Station as C4S2 and 3 other stations are classified as C3S1.Relatively high EC and TDS decreasing water taste quality. Relatively low quality of Sefidrood Riverwater and better quality of Disam River water influences groundwaters. There is no evidence of seawater intrusion in the groundwaters. Water type is Calcium and magnesium bicarbonate. Using linearregression equation and determination coefficient between anions and cations results that bicarbonateis originated from dissolution of limestone formations in the study area or Great Sefidrood watershade,chloride is interred in the groundwaters resulting from dissolution of evaporation deposits in theGhezelozan watershade and sulfate from dissolution of evaporation deposits in Ghezelozanwatershade and leaching of potash fertilizers from soil Manuscript profile -
Open Access Article
32 - Geochemistry of Stream Sediments and Heavy Minerals Determination in Karghan area, NW Bostanabad
Fazel Khaleghi Arash Mohammadi KardoustKarghan Area is located in East Azarbaijan province, southeast of Tabriz and northwest of Bostanabad city. Based on the division of the structural zones of Iran, it is part of the Alborz-Azarbaijan zone. The most important geological units in the studied area are shale, MoreKarghan Area is located in East Azarbaijan province, southeast of Tabriz and northwest of Bostanabad city. Based on the division of the structural zones of Iran, it is part of the Alborz-Azarbaijan zone. The most important geological units in the studied area are shale, marl and limestone (Cretaceous), Sahand volcanic products of the age of Pliocene-Pliocoscene, Granitic intrusive, Gabrodiorite and Monzogranite, old terraces and Quaternary sediments. Regarding the spread of the area, 29 geochemical stream sediment samples and 29 heavy mineral samples were taken from the places. The anomalies of arsenic, barium, copper, lead and zinc in the region are represented by their statistical distribution type. The most important heavy minerals with lithological origin were zircon, amphibole and pyroxene. Heavy minerals of pyrite, magnetite and hematite are attributed to the mineralization holes. Heavy mineral studies indicate occurrence of malachite-copper mineralization in the region. Considering the observed anomalies in the stream sediments and heavy minerals, it is recommended detail exploration in the area. Manuscript profile -
Open Access Article
33 - Petrography, Geochemistry and Tectonomagmatic Setting of the intrusive bodies of Jasb area
R. Mohammadi ناصر EbadatiThe Jasb area is located about 100 Km of South of Qom in Urmiyeh-Dokhtar magmatic belt. Thescattered plutonic rocks belong to Eocene-Oligocene and Miocene. The plutonic rocks’ typeVariations are granite, quartzmonzonite, tonalite-granodiorite ,quartzmicrodiorite, MoreThe Jasb area is located about 100 Km of South of Qom in Urmiyeh-Dokhtar magmatic belt. Thescattered plutonic rocks belong to Eocene-Oligocene and Miocene. The plutonic rocks’ typeVariations are granite, quartzmonzonite, tonalite-granodiorite ,quartzmicrodiorite, and gabbrodiorite.The petrographic studies revealed that the textures of plutonic rocks are mainly granular andsometimes graphic or porphyritic. The magmatic series of intrusive rocks except gabbrodiorite types(toleitic) are calk alkaline and metaaluminums. Probably, the small massive granite rocks in theinvestigation area are I - type granite. The Rocks in this area compositionally belong to the tectonicalregime of the VAG and SynCOLG. Considering change in abundance of minerals such as pyroxene,magnetite, amphibole, biotite, plagioclase and feldspar in the intrusive rocks, hence, it is indicative ofsuccessive process of differentiation in intermediate magma, and ultimately creating variation inlithology. According to the analysis results, the geochemical diagrams were drawn and interpreted.Defining the lithology of intrusives, the tectonomagmatic condition, magmatic series, and geochemicalvariations are the results of geochemical and petrologic studies of intrusives in the area. Manuscript profile -
Open Access Article
34 - The investigation of gaseous pollutant layers depth with hydrogeochemical and geoelectrical data in chahardoly plain
Mohammad Manshori سجاد Fazel-TavasolThe studied area is located at Qorveh region, NW of Hamadan. The pollution of water resources withCO2 is the main problem in the studied area. Destruction of water resource, existence of hygiene andeconomic problems are its results.Main changes in drinking water quality MoreThe studied area is located at Qorveh region, NW of Hamadan. The pollution of water resources withCO2 is the main problem in the studied area. Destruction of water resource, existence of hygiene andeconomic problems are its results.Main changes in drinking water quality in chahardoly plain, is a evidence for ground water resourcescontamination. In this work, hydrogeochemistry and geoelectrical datas have used to Investigation ofpollutant layers depth for chahardoly plain.According to vertical hydrogeochemical and resistivity investigations of sediment horizons, fieldinvestigations and observation in drilling sites, the depth of gas rich layer is estimated about 50-60meters Manuscript profile -
Open Access Article
35 - The formation of Ab Torsh barite deposit, Kerman province, with a view on the geochemistry of rare earth elements and stable isotopes of oxygen and sulfur
hossein kalantar hormozi Farhad Ehya ghodratollah rostami paydar sara maliki kheyme sariBarite can form in various geological environments, as it is found in a wide range of mineral deposit types. To determine the origin and physicochemical conditions under which the Ab Torsh barite deposit was formed, a comprehensive study was carried out using petrograph MoreBarite can form in various geological environments, as it is found in a wide range of mineral deposit types. To determine the origin and physicochemical conditions under which the Ab Torsh barite deposit was formed, a comprehensive study was carried out using petrographical, REE geochemical, O and S isotopic. Barite mineralization occurs at Ab Torsh as a stratabound vein in the Senonian sedimentary rock units. Barite is accompanied by quartz and subordinate malachite, chrysocolla, Fe and Mn oxides and hydroxides, galena, azurite, fluorite, pyrite, and bornite. The brecciated host rocks cemented by barite imply an epigenetic origin for the barite mineralization. The ∑REE values are very low in barites (5.32-14.56 ppm), with chondrite-normalized patterns displaying LREE enrichment relative to HREE. The REE elemental ratios show that seawater with a highly modified geochemical signature (connate waters) acted as the barite depositing fluid. The δ18O and δ34S values in barites (+10.4‒+11.1‰ and +27.3‒+27.8‰, respectively) and δ34S values in galena (+6.3 and +7.9‰) indicate that sulfate (and thus sulfur) originated from sulfate carrying connate waters and/or evaporites. The Ab Torsh deposit is classified here as a structure (unconformity)-related barite deposit. It is concluded that intense faulting and the resulting brecciation of the host rocks probably provided the conduits needed for upward migration of the deep mineralizing fluids from a basinal brine source. Barite was formed where these ascending Ba-bearing hydrothermal fluids encountered sulfate-containing connate waters trapped within the overlying Senonian strata and or the descending meteoric waters that gained sulfate from evaporite-bearing rock units. Manuscript profile -
Open Access Article
36 - Investigations about lithology, geochemical composition and alteration of gold deposits in Kooh-e Zar Damghan and the process of gold mineralization in this area
Hamid Aghajani Mehrdad Soleimani Behnam Babaei -
Open Access Article
37 - Elimination of syngenetic components from geochemical data using Fuzzy C-means clustering, case study: an example from east of Iran, Birjand
Masood Akhyani Ahmad Aryafar -
Open Access Article
38 - The Geochemistry and Geothermometry of Sphalerite in the Carbonate-Hosted Emarat Pb-Zn Deposit
Farhad Ehya Mohammad Lotfi Iraj Rasa -
Open Access Article
39 - Environmental geochemistry of some major, minor and trace elements in Kerman urban areas
Mohammadali Hamzeh Amir reza Zarisfi -
Open Access Article
40 - Potential comparison of Kazhdomi and Pabdeh source rocks in Marun oilfield, by S2 vs. TOC standard geochemical diagram
Mohammad mehdi Fajrak Bahram Alizadeh Hormoz Ghalavand Farid Tezheh -
Open Access Article
41 - Hydrogeochemical evaluation of groundwater in the north of Qazvin Plain
B. Talebi N. Sajjadi T. SharmadGroundwater has become the most important natural resource in recent years due to lack of rainfall and less surface water. In this Study, the effect of geological and agricultural activities on groundwater resource area in north of Qazvin Plain has been studied. For thi MoreGroundwater has become the most important natural resource in recent years due to lack of rainfall and less surface water. In this Study, the effect of geological and agricultural activities on groundwater resource area in north of Qazvin Plain has been studied. For this research to study the qualitative parameters, 17 wells were sampled in 2013. Initially for estimation of the impact of geology on groundwater samples, water type and saturation index (SI) of various minerals were studied, then the impact of human factors on groundwater resources in the North of Qazvin plain was investigated by using linear regression analysis. Results showed that the amount of dissolved minerals from the west to the east of the study area is on the rise. Ions of sodium, bicarbonate and sulfate are dominant ions, mostly as a result of the dissolution of halite, gypsum and carbonate which entered the groundwater. Linear regression analysis showed that high correlation of nitrate, sulfate, chloride, potassium, and total dissolved solids (TDS) reflects the impact of agricultural activities on groundwater. Nitrate concentration was found to be much higher than WHO 2011 standards (50 ppm) in western (335 ppm) and eastern (103 ppm) parts of study area as a result of agricultural activities. Manuscript profile
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