Biostratigraphy and paleoenvironmental significance of Paleogene foraminiferal assemblages from Dashte Zari area in High Zagros, West Iran
International audience The Paleogene carbonate deposits of Pabdeh and Jahrum formations are widespread from the northwest (Dashte Zari area) to the southwest of the Shahrekord region in the High Zagros Mountains of Iran and record the lateral and upward transition from open marine into the shallow w...
Published in: | Revista Brasileira de Paleontologia |
---|---|
Main Authors: | , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2022
|
Subjects: | |
Online Access: | https://cnrs.hal.science/hal-04363004 https://doi.org/10.4072/rbp.2022.3.03 |
id |
ftunouvellecaled:oai:HAL:hal-04363004v1 |
---|---|
record_format |
openpolar |
spelling |
ftunouvellecaled:oai:HAL:hal-04363004v1 2024-06-16T07:42:46+00:00 Biostratigraphy and paleoenvironmental significance of Paleogene foraminiferal assemblages from Dashte Zari area in High Zagros, West Iran Babazadeh, Seyed Ahmad Cluzel, Dominique Université de la Nouvelle-Calédonie (UNC) Institut de sciences exactes et appliquées (ISEA) 2022-11-26 https://cnrs.hal.science/hal-04363004 https://doi.org/10.4072/rbp.2022.3.03 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.4072/rbp.2022.3.03 hal-04363004 https://cnrs.hal.science/hal-04363004 doi:10.4072/rbp.2022.3.03 ISSN: 1519-7530 Revista Brasileira de Paleontologia https://cnrs.hal.science/hal-04363004 Revista Brasileira de Paleontologia, 2022, 25 (3), pp.189-207. ⟨10.4072/rbp.2022.3.03⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology info:eu-repo/semantics/article Journal articles 2022 ftunouvellecaled https://doi.org/10.4072/rbp.2022.3.03 2024-05-19T23:39:35Z International audience The Paleogene carbonate deposits of Pabdeh and Jahrum formations are widespread from the northwest (Dashte Zari area) to the southwest of the Shahrekord region in the High Zagros Mountains of Iran and record the lateral and upward transition from open marine into the shallow water environment. The Pabdeh Formation shows a succession of open marine pelagic and hemipelagic limestone, argillaceous limestone, and argillaceous chert. It consists of planktonic wackestone, pellet-planktonic wackestone, mudstone with planktonic foraminifera, and radiolarian siliceous wackestone, which accumulated within the Zagros Foreland Basin. The planktonic foraminifers are assigned to the Late Paleocene–Late Eocene and correspond to subtropical and tropical Zones P4b–E15. The Jahrum Formation is represented by bioclast-bearing limestone and calcarenite. It consists of benthic foraminiferal wackestone, benthic foraminiferal-red algal packstone, and bioclast-intraclast packstone deposited in a shallow platform environment. The Jahrum Formation is inter-fingered in the upper part of the Pabdeh Formation and finally overlies it conformably during the Bartonian–Priabonian. Shallowing and off-lap relationships record basin shrinking, while repeated inter-fingering signals moderate tectonic subsidence. Both formations are disconformably covered by the Late Oligocene–Miocene Asmari Formation. Keywords: biostratigraphy, Pabdeh Formation, Zagros, Paleogene, Iran. Article in Journal/Newspaper Planktonic foraminifera HAL UNC (Université de la Nouvelle Calédonie) Revista Brasileira de Paleontologia 25 3 189 207 |
institution |
Open Polar |
collection |
HAL UNC (Université de la Nouvelle Calédonie) |
op_collection_id |
ftunouvellecaled |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology Babazadeh, Seyed Ahmad Cluzel, Dominique Biostratigraphy and paleoenvironmental significance of Paleogene foraminiferal assemblages from Dashte Zari area in High Zagros, West Iran |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology |
description |
International audience The Paleogene carbonate deposits of Pabdeh and Jahrum formations are widespread from the northwest (Dashte Zari area) to the southwest of the Shahrekord region in the High Zagros Mountains of Iran and record the lateral and upward transition from open marine into the shallow water environment. The Pabdeh Formation shows a succession of open marine pelagic and hemipelagic limestone, argillaceous limestone, and argillaceous chert. It consists of planktonic wackestone, pellet-planktonic wackestone, mudstone with planktonic foraminifera, and radiolarian siliceous wackestone, which accumulated within the Zagros Foreland Basin. The planktonic foraminifers are assigned to the Late Paleocene–Late Eocene and correspond to subtropical and tropical Zones P4b–E15. The Jahrum Formation is represented by bioclast-bearing limestone and calcarenite. It consists of benthic foraminiferal wackestone, benthic foraminiferal-red algal packstone, and bioclast-intraclast packstone deposited in a shallow platform environment. The Jahrum Formation is inter-fingered in the upper part of the Pabdeh Formation and finally overlies it conformably during the Bartonian–Priabonian. Shallowing and off-lap relationships record basin shrinking, while repeated inter-fingering signals moderate tectonic subsidence. Both formations are disconformably covered by the Late Oligocene–Miocene Asmari Formation. Keywords: biostratigraphy, Pabdeh Formation, Zagros, Paleogene, Iran. |
author2 |
Université de la Nouvelle-Calédonie (UNC) Institut de sciences exactes et appliquées (ISEA) |
format |
Article in Journal/Newspaper |
author |
Babazadeh, Seyed Ahmad Cluzel, Dominique |
author_facet |
Babazadeh, Seyed Ahmad Cluzel, Dominique |
author_sort |
Babazadeh, Seyed Ahmad |
title |
Biostratigraphy and paleoenvironmental significance of Paleogene foraminiferal assemblages from Dashte Zari area in High Zagros, West Iran |
title_short |
Biostratigraphy and paleoenvironmental significance of Paleogene foraminiferal assemblages from Dashte Zari area in High Zagros, West Iran |
title_full |
Biostratigraphy and paleoenvironmental significance of Paleogene foraminiferal assemblages from Dashte Zari area in High Zagros, West Iran |
title_fullStr |
Biostratigraphy and paleoenvironmental significance of Paleogene foraminiferal assemblages from Dashte Zari area in High Zagros, West Iran |
title_full_unstemmed |
Biostratigraphy and paleoenvironmental significance of Paleogene foraminiferal assemblages from Dashte Zari area in High Zagros, West Iran |
title_sort |
biostratigraphy and paleoenvironmental significance of paleogene foraminiferal assemblages from dashte zari area in high zagros, west iran |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://cnrs.hal.science/hal-04363004 https://doi.org/10.4072/rbp.2022.3.03 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
ISSN: 1519-7530 Revista Brasileira de Paleontologia https://cnrs.hal.science/hal-04363004 Revista Brasileira de Paleontologia, 2022, 25 (3), pp.189-207. ⟨10.4072/rbp.2022.3.03⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.4072/rbp.2022.3.03 hal-04363004 https://cnrs.hal.science/hal-04363004 doi:10.4072/rbp.2022.3.03 |
op_doi |
https://doi.org/10.4072/rbp.2022.3.03 |
container_title |
Revista Brasileira de Paleontologia |
container_volume |
25 |
container_issue |
3 |
container_start_page |
189 |
op_container_end_page |
207 |
_version_ |
1802010339734192128 |