Microfacies Analysis and Paleoecology of the Oligocene Succession in a Central Tethyan Carbonate Platform, Zagros Basin, SW Iran
Abstract Two stratigraphic sections (Arjooieh and Firoozabad) of the Mymand anticline, located in the Interior Fars sub‐basin of the Zagros Mountains, were measured and sampled, in order to document sedimentological characteristics, microfacies types and paleo‐seagrasses indicators of the Oligocene...
Published in: | Acta Geologica Sinica - English Edition |
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crwiley:10.1111/1755-6724.14425 2024-06-02T08:13:26+00:00 Microfacies Analysis and Paleoecology of the Oligocene Succession in a Central Tethyan Carbonate Platform, Zagros Basin, SW Iran HABIBI, Tahereh 2021 http://dx.doi.org/10.1111/1755-6724.14425 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1755-6724.14425 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14425 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14425 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Geologica Sinica - English Edition volume 95, issue 5, page 1634-1646 ISSN 1000-9515 1755-6724 journal-article 2021 crwiley https://doi.org/10.1111/1755-6724.14425 2024-05-03T11:43:04Z Abstract Two stratigraphic sections (Arjooieh and Firoozabad) of the Mymand anticline, located in the Interior Fars sub‐basin of the Zagros Mountains, were measured and sampled, in order to document sedimentological characteristics, microfacies types and paleo‐seagrasses indicators of the Oligocene succession (Asmari Fm.). Planktonic and benthic foraminifera and coralline red algae are the principal fossils from these strata. Foraminifera are represented by the following families: Soritidae, Peneroplidae, Austrotrillinidae, Alveolinidae, Planorbulinidae, Discorbidae, Lepidocyclinidae, Amphisteginidae, Rotaliidae, Nummulitidae and Globigerinidae. Nine microfacies types were recognized, namely planktonic foraminifera‐peloidal packstone (MF1), bioclast nummulitid/ Nerorotalia/Amphistegina packstone‐grainstone‐rudstone‐floatstone (MF2), Neorotalia ‐echinoid coralline red algae packstone‐grainstone (MF3), coral boundstone (MF4), coral/coralline red algae rudstone‐floatstone‐packstone‐grainstone (MF5), diverse imperforate foraminifera bioclast packstone‐grainstone (MF6), peloid wackestone‐packstone‐grainstone (MF7), fenestrated mudstone and microbial mats (MF8) and anhydrite (MF9). MF1 indicates an outer ramp, MFs 2‐4 represent a mid‐ramp and MFs 5–9 are interpreted as inner ramp environment. Paleo‐seagrass indicators consisting of foraminifera, hooked and tabular forms of coralline red algae and corals. They were identified in MFs 5 and 6, reflecting the presence of vegetated environments within the mid/inner ramp setting. The Mymand anticline was dominated by the outer ramp environment at the start of the Rupelian. Mid to inner ramp environments prevailed during the Rupelian. The Chattian corresponds to the spread of the inner ramp setting over the Mymand anticline. Article in Journal/Newspaper Planktonic foraminifera Wiley Online Library Acta Geologica Sinica - English Edition 95 5 1634 1646 |
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Wiley Online Library |
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English |
description |
Abstract Two stratigraphic sections (Arjooieh and Firoozabad) of the Mymand anticline, located in the Interior Fars sub‐basin of the Zagros Mountains, were measured and sampled, in order to document sedimentological characteristics, microfacies types and paleo‐seagrasses indicators of the Oligocene succession (Asmari Fm.). Planktonic and benthic foraminifera and coralline red algae are the principal fossils from these strata. Foraminifera are represented by the following families: Soritidae, Peneroplidae, Austrotrillinidae, Alveolinidae, Planorbulinidae, Discorbidae, Lepidocyclinidae, Amphisteginidae, Rotaliidae, Nummulitidae and Globigerinidae. Nine microfacies types were recognized, namely planktonic foraminifera‐peloidal packstone (MF1), bioclast nummulitid/ Nerorotalia/Amphistegina packstone‐grainstone‐rudstone‐floatstone (MF2), Neorotalia ‐echinoid coralline red algae packstone‐grainstone (MF3), coral boundstone (MF4), coral/coralline red algae rudstone‐floatstone‐packstone‐grainstone (MF5), diverse imperforate foraminifera bioclast packstone‐grainstone (MF6), peloid wackestone‐packstone‐grainstone (MF7), fenestrated mudstone and microbial mats (MF8) and anhydrite (MF9). MF1 indicates an outer ramp, MFs 2‐4 represent a mid‐ramp and MFs 5–9 are interpreted as inner ramp environment. Paleo‐seagrass indicators consisting of foraminifera, hooked and tabular forms of coralline red algae and corals. They were identified in MFs 5 and 6, reflecting the presence of vegetated environments within the mid/inner ramp setting. The Mymand anticline was dominated by the outer ramp environment at the start of the Rupelian. Mid to inner ramp environments prevailed during the Rupelian. The Chattian corresponds to the spread of the inner ramp setting over the Mymand anticline. |
format |
Article in Journal/Newspaper |
author |
HABIBI, Tahereh |
spellingShingle |
HABIBI, Tahereh Microfacies Analysis and Paleoecology of the Oligocene Succession in a Central Tethyan Carbonate Platform, Zagros Basin, SW Iran |
author_facet |
HABIBI, Tahereh |
author_sort |
HABIBI, Tahereh |
title |
Microfacies Analysis and Paleoecology of the Oligocene Succession in a Central Tethyan Carbonate Platform, Zagros Basin, SW Iran |
title_short |
Microfacies Analysis and Paleoecology of the Oligocene Succession in a Central Tethyan Carbonate Platform, Zagros Basin, SW Iran |
title_full |
Microfacies Analysis and Paleoecology of the Oligocene Succession in a Central Tethyan Carbonate Platform, Zagros Basin, SW Iran |
title_fullStr |
Microfacies Analysis and Paleoecology of the Oligocene Succession in a Central Tethyan Carbonate Platform, Zagros Basin, SW Iran |
title_full_unstemmed |
Microfacies Analysis and Paleoecology of the Oligocene Succession in a Central Tethyan Carbonate Platform, Zagros Basin, SW Iran |
title_sort |
microfacies analysis and paleoecology of the oligocene succession in a central tethyan carbonate platform, zagros basin, sw iran |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1111/1755-6724.14425 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1755-6724.14425 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14425 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14425 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Acta Geologica Sinica - English Edition volume 95, issue 5, page 1634-1646 ISSN 1000-9515 1755-6724 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1755-6724.14425 |
container_title |
Acta Geologica Sinica - English Edition |
container_volume |
95 |
container_issue |
5 |
container_start_page |
1634 |
op_container_end_page |
1646 |
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1800736945833246720 |