List of Articles رسوبات آبراهه ای

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  1 - Geochemical studies of stream sediment to determine the shear zone-related gold mineralization (Case study of Alut area in Kurdistan province)
  Fardin Ahmadi Mahyadin Mohamadpour
  Geochemical studies of stream sediments are one of the most common methods in mineral exploration, specifically used for gold prospecting. In this study, the univariate statistical parameters, such as the comparison of the maximum and minimum of each element with the ba More

  Geochemical studies of stream sediments are one of the most common methods in mineral exploration, specifically used for gold prospecting. In this study, the univariate statistical parameters, such as the comparison of the maximum and minimum of each element with the background were used in order to identify the Influential elements. Then histogram and probability diagram were prepared. Subsequently influential components and Elements that are closely linked together, were identified using multivariate statistical methods such as Principal Component Analysis. These analyses indicate that six elements (including Au, Hg, Be, Mo, Ti, and Sn) are more important than others. The components of 3 and 7 as influential components were identified and these components were mapped. In the next step, the model of influential elements was creating on a logarithmic scale. The result of the modeling indicates that 80% of classification is correct. Subsequently, the gold-element data were divided into three sub-communities including background (code 0), the Community of background to the anomaly (code 1), and the anomaly-community (code 2). Finally, the gold distribution pattern based on these sub-communities was prepared that three parts of the region were presented as potential areas. For 8 elements the map of discriminant analysis shows that Au and As have opposite treatment. Manuscript profile
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  2 - The Stream Sediments and Heavy Minerals for Au-Cu Geochemical Exploration in Nahavand’s Firozan
  Vahid Rajati Mohammad Yazdi Mehrdad Behzadi Mehrdad Movahedi
  The studied area is located in the north of Nahavand’s Firozan, Sanandaj-Sirjan geological zone. The Cretaceousdacite, andesite, quartz-andesite and tuff are dominated rocks in the area.Granite and granodiorite intrusive rockshave been intruded to this complex. Th More

  The studied area is located in the north of Nahavand’s Firozan, Sanandaj-Sirjan geological zone. The Cretaceousdacite, andesite, quartz-andesite and tuff are dominated rocks in the area.Granite and granodiorite intrusive rockshave been intruded to this complex. The geochemical analysis shows anomalies of Au, Ag, As, Sb, Fe, Pb andZn. The heavy minerals are magnetite, hematite, limonite, martite, oligist, pyrite, oxidized pyrite, galena,sphalerite, native copper, azurite, barite, pyrolusite, ilmenite, rutile, anataz and leucoxene that they areprincipally affiliated with anomalous zones. Also, 18 sample from mineralized zone show that noticeablegeochemical anomaly for Au, Ag, Cu, Pb, Zn and Fe. Finally, field study, mineralography, stream sediments andheavy minerals analysis show that anomalous zone in western part of the area. Manuscript profile
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  3 - Geochemistry of Stream Sediments and Heavy Minerals Determination in Karghan area, NW Bostanabad
  Fazel Khaleghi Arash Mohammadi Kardoust
  Karghan 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, More

  Karghan 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
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  4 - Statistical studies and investigation of environmental contamination of arsenic in stream sediments of Zaylik area, southeast of Ahar
  Abolfazl Hasanzadeh Koulani Somayeh Baharlouei Yancheshmeh
  AbstractAccording to the statistical studies that were carried out in the Zylik mineralization zone, most of the samples collected from stream sediments show the concentration of arsenic (As) and antimony (Sb) higher than their Clarke concentration (Clarke number or cla More

  AbstractAccording to the statistical studies that were carried out in the Zylik mineralization zone, most of the samples collected from stream sediments show the concentration of arsenic (As) and antimony (Sb) higher than their Clarke concentration (Clarke number or clarke is the relative abundance of a chemical element, typically in Earth's crust). Also, according to the United States environmental protection agency (U.S. EPA) report, these values are higher than its standard for residential and industrial areas. According to the geochemical distribution map of these elements, the highest concentration of arsenic (As) is in the north and northeast and antimony (Sb) is in the north, south and east of the study area. It seems that this enrichment corresponds to the streams passing through the siliceous veins and caps in the north of the region. Therefore, this area can be the source of environmental contamination, which affects the ecosystem as a result. Manuscript profile
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  5 - اکتشافات سیستماتیک ژئوشیمی رسوبات آبراه های منطقهی شورچاه (جنوب شرق زاهدان)
  محمدگل کهرازه محمدرضا جعفری عبدالرحیم باقری فر
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