Biostratigraphy, Microfacies and Depositional Environment of the Sarvak Formation at the Pyun Anticline (Zagros Basin, Southwest of Iran)
Abstract The Sarvak Formation is a carbonate sequence of Late Albian–Early Turonian age in Zagros Basin in Iran. In this investigation, the Sarvak Formation at the Pyun Anticline section (Izeh Zone) has been studied. It consists of 797 m thick limestone which overlies the Kazhdumi Formation conforma...
Published in: | Acta Geologica Sinica - English Edition |
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Online Access: | http://dx.doi.org/10.1111/1755-6724.14763 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14763 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14763 |
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crwiley:10.1111/1755-6724.14763 2024-06-02T08:13:25+00:00 Biostratigraphy, Microfacies and Depositional Environment of the Sarvak Formation at the Pyun Anticline (Zagros Basin, Southwest of Iran) DOUSTI MOHAJER, Mahtab AFGHAH, Massih DEHGHANIAN, Mohammadsadegh SHEIKH ZAKARIAII, Seyed Jamal 2021 http://dx.doi.org/10.1111/1755-6724.14763 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14763 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14763 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Geologica Sinica - English Edition volume 95, issue 5, page 1647-1667 ISSN 1000-9515 1755-6724 journal-article 2021 crwiley https://doi.org/10.1111/1755-6724.14763 2024-05-03T10:56:52Z Abstract The Sarvak Formation is a carbonate sequence of Late Albian–Early Turonian age in Zagros Basin in Iran. In this investigation, the Sarvak Formation at the Pyun Anticline section (Izeh Zone) has been studied. It consists of 797 m thick limestone which overlies the Kazhdumi Formation conformably and underlies the Gurpi Formation unconformably at the Pyun Anticline. A very rich fossil association (85 genera and 132 species) characterizes the Pyun section. Based on the stratigraphic distribution of diagnosed foraminifera, five biozones are established: 1, Muricohedbergella‐Globigerinelloides sp. assemblage zone (Late Albian); 2, Praealveolina iberica‐Chrysalidina gradata interval zone (Early Cenomanian); 3, Chrysalidina gradata‐Cisalveolina fraasi (fallax) and C. lehneri interval zone (Middle Cenomanian); 4, C. fraasi (fallax) and C. lehneri‐Praetaberina bingistani assemblage zone (Late Cenomanian); 5, Nezzazatinella picardi‐Mangashtia‐Dicyclina assemblage zone (Early Turonian). Based on the petrographic and sedimentological analyses, some 13 carbonate microfacies were identified. The investigated microfacies confirm a ramp‐type paleoenvironment. These microfacies, from distal to proximal environments, consist of: MF1: planktonic foraminifera wackestone‐packstone; MF2: Oligostegina planktonic foraminifera wackestone to packstone; MF3: planktonic‐benthic foraminifers sponge spicules wackestone‐packstone; MF4: rudist floatstone; MF5: rudist rudstone; MF6: bioclast intraclast grainstone; MF7: peloid intraclast grainstone; MF8: benthic foraminifers rudist grainstone‐packstone; MF9: peloid bioclast grainstone‐packstone; MF10: bioclast (benthic foraminifers) wackestone‐packstone; MF11: peloid bioclast packstone; MF12: dacycladacea benthic foraminifera packstone‐wackestone; MF13: miliolids wackestone‐packstone. Article in Journal/Newspaper Planktonic foraminifera Wiley Online Library Acta Geologica Sinica - English Edition 95 5 1647 1667 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract The Sarvak Formation is a carbonate sequence of Late Albian–Early Turonian age in Zagros Basin in Iran. In this investigation, the Sarvak Formation at the Pyun Anticline section (Izeh Zone) has been studied. It consists of 797 m thick limestone which overlies the Kazhdumi Formation conformably and underlies the Gurpi Formation unconformably at the Pyun Anticline. A very rich fossil association (85 genera and 132 species) characterizes the Pyun section. Based on the stratigraphic distribution of diagnosed foraminifera, five biozones are established: 1, Muricohedbergella‐Globigerinelloides sp. assemblage zone (Late Albian); 2, Praealveolina iberica‐Chrysalidina gradata interval zone (Early Cenomanian); 3, Chrysalidina gradata‐Cisalveolina fraasi (fallax) and C. lehneri interval zone (Middle Cenomanian); 4, C. fraasi (fallax) and C. lehneri‐Praetaberina bingistani assemblage zone (Late Cenomanian); 5, Nezzazatinella picardi‐Mangashtia‐Dicyclina assemblage zone (Early Turonian). Based on the petrographic and sedimentological analyses, some 13 carbonate microfacies were identified. The investigated microfacies confirm a ramp‐type paleoenvironment. These microfacies, from distal to proximal environments, consist of: MF1: planktonic foraminifera wackestone‐packstone; MF2: Oligostegina planktonic foraminifera wackestone to packstone; MF3: planktonic‐benthic foraminifers sponge spicules wackestone‐packstone; MF4: rudist floatstone; MF5: rudist rudstone; MF6: bioclast intraclast grainstone; MF7: peloid intraclast grainstone; MF8: benthic foraminifers rudist grainstone‐packstone; MF9: peloid bioclast grainstone‐packstone; MF10: bioclast (benthic foraminifers) wackestone‐packstone; MF11: peloid bioclast packstone; MF12: dacycladacea benthic foraminifera packstone‐wackestone; MF13: miliolids wackestone‐packstone. |
format |
Article in Journal/Newspaper |
author |
DOUSTI MOHAJER, Mahtab AFGHAH, Massih DEHGHANIAN, Mohammadsadegh SHEIKH ZAKARIAII, Seyed Jamal |
spellingShingle |
DOUSTI MOHAJER, Mahtab AFGHAH, Massih DEHGHANIAN, Mohammadsadegh SHEIKH ZAKARIAII, Seyed Jamal Biostratigraphy, Microfacies and Depositional Environment of the Sarvak Formation at the Pyun Anticline (Zagros Basin, Southwest of Iran) |
author_facet |
DOUSTI MOHAJER, Mahtab AFGHAH, Massih DEHGHANIAN, Mohammadsadegh SHEIKH ZAKARIAII, Seyed Jamal |
author_sort |
DOUSTI MOHAJER, Mahtab |
title |
Biostratigraphy, Microfacies and Depositional Environment of the Sarvak Formation at the Pyun Anticline (Zagros Basin, Southwest of Iran) |
title_short |
Biostratigraphy, Microfacies and Depositional Environment of the Sarvak Formation at the Pyun Anticline (Zagros Basin, Southwest of Iran) |
title_full |
Biostratigraphy, Microfacies and Depositional Environment of the Sarvak Formation at the Pyun Anticline (Zagros Basin, Southwest of Iran) |
title_fullStr |
Biostratigraphy, Microfacies and Depositional Environment of the Sarvak Formation at the Pyun Anticline (Zagros Basin, Southwest of Iran) |
title_full_unstemmed |
Biostratigraphy, Microfacies and Depositional Environment of the Sarvak Formation at the Pyun Anticline (Zagros Basin, Southwest of Iran) |
title_sort |
biostratigraphy, microfacies and depositional environment of the sarvak formation at the pyun anticline (zagros basin, southwest of iran) |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/1755-6724.14763 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14763 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14763 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Acta Geologica Sinica - English Edition volume 95, issue 5, page 1647-1667 ISSN 1000-9515 1755-6724 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1755-6724.14763 |
container_title |
Acta Geologica Sinica - English Edition |
container_volume |
95 |
container_issue |
5 |
container_start_page |
1647 |
op_container_end_page |
1667 |
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1800736906815733760 |