List of Articles Gachsaran formation

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Assessment of soil erosion zonation using F.A.O model in maroon basin
  حمید بابلی موخر Kourosh Shirani morteza khodagholi
  The Soil erosion mapping is the priority basement of soil conservation program in the watershed management. This study aimed to apply the FAO model and assessing factors affecting erodibility of soil using GIS and producing soil erosion map in Maroon watershed. For this More

  The Soil erosion mapping is the priority basement of soil conservation program in the watershed management. This study aimed to apply the FAO model and assessing factors affecting erodibility of soil using GIS and producing soil erosion map in Maroon watershed. For this purpose, the basin maps were digitized in a scale of 1:50,000 and they were integrated with each other by using ArcGIS10.3 software. Homogeneous units map was produced. Then, according to the scoring table used in the model of FAO and surveying using GPS in the field and apply the factor scores for each homogeneous units was estimated the final score for each factor and the severity of erosion in homogenous units by GIS. Finally, the produced weight map was reclassified according to the FAO model and the minimum and maximum score of the erosion for the evaluated factors. It was categorized in four classes by including low, medium, high and very high classes. The results revealed that 95 percent of the study area located in the moderate erosion (49.06%) to high (45.98%) and only 5% of the area in the relatively moderate erosion (3.66%) and very high (1.30%) were occurred. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Assessment of heavy metals Pollution of Chemofacies in The Gachsaran Formationm Gilan e Gharb area, West Kermanshah
  Behnam Sekhavati Mostafa Yousefirad Mahmoodreza Majidifard Ali Solgi zahra maleki
  10.30495/jest.2022.48568.4871
  Background and Objective: Distribution of heavy metals in rock units and their pollutants are necessary environmental issues which have high importance. Material and Methodology: Because of not performed environmental geochemical studies of heavy metals in Iran based o More

  Background and Objective: Distribution of heavy metals in rock units and their pollutants are necessary environmental issues which have high importance. Material and Methodology: Because of not performed environmental geochemical studies of heavy metals in Iran based on chemostratigraphic studies, for this purpose, this study on chemofacies of Gachsaran formation in Kermanshah with the aim of assessing environmental heavy metal pollution was carried out. For determine the concentrations of heavy metals, XRF and ICP mass techniques were used and the amount of metal contamination was investigated using statistical softwares and pollution indices. Findings: The results indicated high concentration of cadmium in sediments of Gachsaran Formation (3.3) ppm which is higher than (0.3) ppm in crust. All three used indices (Igeo, EF ANF CF) showed cadmium contamination in studied sediments but molybdenum, aluminum, cobalt and iron did not showpollution in sediments. Furthermore the values of CF and EF indices showed a similar trend about element contamination in sediments. Discussion and Conclusion: Significant amounts of cadmium in the Gachsaran Formation can be further affected by the dissolution process of rocks and sediments by surface and groundwater, as well as by biological (agricultural and mining) activities and can has non optimal environmental impacts. Therefore, it is necessary to anticipate and make the necessary arrangements in this case. High levels of cadmium in the sequences of the Gachsaran Formation can effected by dissolution, as well as biological activities (agriculture and mining).                                              Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - Effect of Acid Precipitations on Formed Soils Infiltration in Gachsaran formation
  hamzah saeediyan
  Each soil mass is composed of solid grains with different sizes and empty spaces that allow empty spaces to be moved to water from a high-energy point to a lower-energy point, which creates the permeability of the soil. In this study, in order to determine the most impo More

  Each soil mass is composed of solid grains with different sizes and empty spaces that allow empty spaces to be moved to water from a high-energy point to a lower-energy point, which creates the permeability of the soil. In this study, in order to determine the most important factors affecting soil permeability, compared to acidic rainfall in the slope main aspects of Gachsaran formation, a part of the gypsum mountain basin of Izeh City with an area of 1202 hectares was selected. This study, In order to determine the relationship between the infiltration rate by rainfall simulator with some soil physical and chemical properties such as percentage of gravel, clay, silt, sand, acidity, electrical conductivity, moisture, calcium carbonate, and organic matter and sodium were performed in different slopes of Gachsaran formation. The most important factors influencing the penetration rate were identified by multivariate regression. The regression models showed that generally, in all slope main aspects in Gachsaran formation in rainfall with distilled water, the chemical characteristics of the most important role in increasing and decreasing the permeability and in precipitation with the acidity 5, the chemical characteristics of the soil are the most important role in increasing and decreasing the level of permeability, but with increasing the concentration of acidity to 4, the physical and chemical characteristics of the soil have an equal role in increasing and decreasing. Manuscript profile