Background and Objective: Jahrum Formation has long been of special interest due to its wide distribution, Biostratigraphic and Lithostratigraphic differences in different areas, and the existence of hydrocarbon reserves. The purpose of this study is to investigate the
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Background and Objective: Jahrum Formation has long been of special interest due to its wide distribution, Biostratigraphic and Lithostratigraphic differences in different areas, and the existence of hydrocarbon reserves. The purpose of this study is to investigate the Jahrum Formation in the study areas, in terms of stratigraphic position (thickness and lithology) and geology (contact with upper and lower formations) and its paleontology.
Material and Methodology: The study conducted on Jahrum formation (lower and Middle Eocene) of interior Fars, Zagros. The 465 samples were collected from Gushenekan, kuh-e-Chehel Cheshme and Tong garm. Thin sections were used to study of stratigraghy, microfacies and microfossils.
Findings: According to them, two sedimentery sequences identified. The main aims of the research are Identification of the Jahrum formation borders that connected to the Asmari at the top as discotinuty and the Sachun formation at bottom as concordant.
Discussion and Conclusions: Based on this study Jahrum formation has deposited in the internal ramp and consisting two sequences. Additionaly, sedimentary environment, geochemical analysis and Paleontological ecology of the Jahrum were studied too. Also, the tectonic position of the sedimentary basin of Jahrum Formation in comparison with the adjacent basins was presented in the form of a conceptual design for the first time.
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