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Journal of Sciences Islamic Republic of Iran، جلد ۳۰، شماره ۲، صفحات ۱۴۳-۱۶۶
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عنوان انگلیسی Depositional Environment and Sequence Stratigraphy of the Oligocene-Miocene Deposits North and East of Dehdasht, Izeh Zone, Zagros Basin, Iran
چکیده انگلیسی مقاله In this study, four well-exposed outcrops of the Asmari Fm in the southeastern part of the Izeh Zone of the Zagros Mountains were measured and sampled. In this region, the Asmari Fm is Oligocene to Early Miocene in age as determined by large benthic foraminifera. Based on depositional geometries, biogenic contents and lateral and vertical variations of facies, three depositional models are proposed to illustrate the evolution of the Asmari carbonate platform. During the Chattian, large benthic foraminifera and coral-coralline red algae were dominant, while through the Early Miocene time interval (Aquitanian-Burdigalian), non-skeletal components along with porcelaneous foraminifera were the most conspicuous elements. These deposits formed a carbonate ramp in the Chattian and a low angle carbonate-ramp during the Early Miocene. Five major 3rd-order depositional sequences have been identified based on stratal stacking patterns and facies relationships. These depositional sequences show systematic progradations from SE to NW into and over the basinal Pabdeh Fm during Oligo-Miocene times.
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نویسندگان مقاله Reza Moussavi-Harami |
Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Iran

Farrokh Naseri-Karimvand |
Department of Geology, Faculty of Science, International Campus, Ferdowsi University of Mashhad, Iran

Asadollah Mahboubi |
Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Iran

A. Ghabeishavi |
National Iranian South Oil Company (NISOC), Ahwaz, Islamic Republic of Iran

Ruhollah Shabafrooz |
National Iranian South Oil Company (NISOC), Ahwaz 61735-1333, Iran

نشانی اینترنتی https://jsciences.ut.ac.ir/article_71750_8a4f29d7dae0165d568d425396587a0b.pdf
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زبان مقاله منتشر شده en
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