The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry
Abstract In this study, the Maastrichtian‐Danian boundary was measured and sampled in two stratigraphic sections, the north and south flanks of the Dehnow anticline in Coastal Fars, Southern Iran. This boundary was also investigated in the drilled exploratory well‐1 in the same region. The lithology...
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crwiley:10.1111/1755-6724.14292 2024-06-23T07:56:17+00:00 The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry MOGHADDASI, Abdolreza VAZIRI‐MOGHADDAM, Hossein SEYRAFIAN, Ali 2020 http://dx.doi.org/10.1111/1755-6724.14292 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14292 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14292 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Geologica Sinica - English Edition volume 94, issue 5, page 1339-1363 ISSN 1000-9515 1755-6724 journal-article 2020 crwiley https://doi.org/10.1111/1755-6724.14292 2024-06-11T04:35:53Z Abstract In this study, the Maastrichtian‐Danian boundary was measured and sampled in two stratigraphic sections, the north and south flanks of the Dehnow anticline in Coastal Fars, Southern Iran. This boundary was also investigated in the drilled exploratory well‐1 in the same region. The lithology of the Maastrichtian‐Danian deposits consists of glauconitic, phosphatic argillaceous limestones and marlstones. 30 genera and 77 species of planktonic foraminifera have been determined. The recognized biozones are the Gansserina gansseri Interval Zone, and the Contusotruncana contusa Interval Zone, which indicates latest Campanian to middle Maastrichtian age for the upper part of the Gurpi Formation. In addition, the Eoglobigerina edita (P1) Partial Range Zone, Praemurica uncinata (P2) Lowest Occurrence Zone, Morozovella angulata (P3) Lowest Occurrence Zone and Globanomalina psudomenardii (P4) Taxon Range Zone represent a Danian to Thanetian age for the lower part of the Pabdeh Formation. From the absence of the Abathomphalus mayaroensis Interval Zone, Pseudoguembelina hariaensis Interval Zone, Pseudotextularia elegans Interval Zone, Plummerita hantkeninoides Interval Zone, Guembelitria cretacea (P0) Partial Range Zone and Parvularugoglobigerina eugubina (Pα) Total Range Zone, it can be deduced that there is a paraconformity across the Maastrichtian–Danian boundary in the studied area, this hiatus encompassing the late Maastrichtian and the earliest Danian. Danian deposits from the study area contain reworked glauconitized macrofossils, planktonic and benthic foraminifera of the Cretaceous. The obtained surface gamma‐ray spectrometry logs resemble the exploratory well‐1 gamma‐ray wireline log. Article in Journal/Newspaper Planktonic foraminifera Wiley Online Library Acta Geologica Sinica - English Edition 94 5 1339 1363 |
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Wiley Online Library |
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English |
description |
Abstract In this study, the Maastrichtian‐Danian boundary was measured and sampled in two stratigraphic sections, the north and south flanks of the Dehnow anticline in Coastal Fars, Southern Iran. This boundary was also investigated in the drilled exploratory well‐1 in the same region. The lithology of the Maastrichtian‐Danian deposits consists of glauconitic, phosphatic argillaceous limestones and marlstones. 30 genera and 77 species of planktonic foraminifera have been determined. The recognized biozones are the Gansserina gansseri Interval Zone, and the Contusotruncana contusa Interval Zone, which indicates latest Campanian to middle Maastrichtian age for the upper part of the Gurpi Formation. In addition, the Eoglobigerina edita (P1) Partial Range Zone, Praemurica uncinata (P2) Lowest Occurrence Zone, Morozovella angulata (P3) Lowest Occurrence Zone and Globanomalina psudomenardii (P4) Taxon Range Zone represent a Danian to Thanetian age for the lower part of the Pabdeh Formation. From the absence of the Abathomphalus mayaroensis Interval Zone, Pseudoguembelina hariaensis Interval Zone, Pseudotextularia elegans Interval Zone, Plummerita hantkeninoides Interval Zone, Guembelitria cretacea (P0) Partial Range Zone and Parvularugoglobigerina eugubina (Pα) Total Range Zone, it can be deduced that there is a paraconformity across the Maastrichtian–Danian boundary in the studied area, this hiatus encompassing the late Maastrichtian and the earliest Danian. Danian deposits from the study area contain reworked glauconitized macrofossils, planktonic and benthic foraminifera of the Cretaceous. The obtained surface gamma‐ray spectrometry logs resemble the exploratory well‐1 gamma‐ray wireline log. |
format |
Article in Journal/Newspaper |
author |
MOGHADDASI, Abdolreza VAZIRI‐MOGHADDAM, Hossein SEYRAFIAN, Ali |
spellingShingle |
MOGHADDASI, Abdolreza VAZIRI‐MOGHADDAM, Hossein SEYRAFIAN, Ali The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry |
author_facet |
MOGHADDASI, Abdolreza VAZIRI‐MOGHADDAM, Hossein SEYRAFIAN, Ali |
author_sort |
MOGHADDASI, Abdolreza |
title |
The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry |
title_short |
The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry |
title_full |
The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry |
title_fullStr |
The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry |
title_full_unstemmed |
The Maastrichtian‐Danian in the SW Zagros Fold‐Thrust Belt (S. Iran): An Integration of Planktonic Foraminiferal Biostratigraphy and Gamma‐Ray Spectrometry |
title_sort |
maastrichtian‐danian in the sw zagros fold‐thrust belt (s. iran): an integration of planktonic foraminiferal biostratigraphy and gamma‐ray spectrometry |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/1755-6724.14292 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14292 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14292 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Acta Geologica Sinica - English Edition volume 94, issue 5, page 1339-1363 ISSN 1000-9515 1755-6724 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1755-6724.14292 |
container_title |
Acta Geologica Sinica - English Edition |
container_volume |
94 |
container_issue |
5 |
container_start_page |
1339 |
op_container_end_page |
1363 |
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1802649278189928448 |