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A Neo-Tethyan upper Cenomanian–Santonian neritic carbonate ramp succession (Sarvak and Ilam formations), drilled in the Zagros Basin in southwest Iran, was investigated via detailed sedimentology, microfacies analysis, elemental geochemistry and Sr-isotope stratigraphy (SIS). The succession contains two exposure surfaces, which are known as the CT-ES and mT-ES (Cenomanian–Turonian and middle Turonian,...
This study is focused on the sedimentary environments, facies distribution and sequence stratigraphy of the Santonian intervals (Ilam Formation of Bangestan Group) that host enormous hydrocarbon reserves in five giant and supergiant oilfields in the central and southern parts of the Dezful Embayment (SW Iran). This reservoir formation is investigated using detailed petrographic analysis assisted by...
Thick Neocomian–middle Albian successions include the most significant hydrocarbon source rocks in the Zagros Basin. These successions, named the Garau Formation, are composed of about 700 m of limestone, shaly (argillaceous) limestone, and bedded cherts with high organic matter (OM) content. Considering several lines of evidence, including the presence of partially dissolved planktonic foraminifer...
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