دورية أكاديمية
Microfacies analysis of Eocene Ziarat Formation (eastern Alborz zone, NE Iran) and paleoenvironmental implications
| العنوان: | Microfacies analysis of Eocene Ziarat Formation (eastern Alborz zone, NE Iran) and paleoenvironmental implications |
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| المؤلفون: | Mehdi Hadi, Suman Sarkar, Mohammad Vahidinia, Aram Bayet-Goll |
| المصدر: | All Earth, Vol 33, Iss 1, Pp 66-87 (2021) |
| بيانات النشر: | Taylor & Francis Group, 2021. |
| سنة النشر: | 2021 |
| المجموعة: | LCC:Geology LCC:Physical geography |
| مصطلحات موضوعية: | paleoenvironment, eocene, larger benthic foraminifera, microfacies, ziarat formation, Geology, QE1-996.5, Physical geography, GB3-5030 |
| الوصف: | Despite belonging to an important time slice in the geological history, the Eocene shallow-marine beds of the Alborz region in Iran have received little attention from researchers. We selected two stratigraphic sections (Mojen and Kalateh) ascribed to the Ziarat Formation as suitable representatives for the current analysis, emphasising on their constituent microfacies and paleoenvironmental implications. The biotic communities are characterised by larger benthic foraminifera (LBF), coralline algae, corals, and bivalves as the major carbonate facies components. The microfacies gradients and paleoenvironmental analysis suggest deposition in a shallow-marine oligotrophic ramp environment within two platform stages. Both these stages indicate an increase in water depth from the inner to the middle ramp settings with spatial distribution of the LBF and other benthic components. Our data support the previous view that the early Eocene witnessed an increase in LBF taxa with near obliteration of the coral reefs in the sedimentary platforms across the Tethys. The corals reinitiated building reefal structures in the Middle Eocene, marking an important phase in the Tethyan paleoenvironmental evolution. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2766-9645 27669645 |
| Relation: | https://doaj.org/toc/2766-9645 |
| DOI: | 10.1080/27669645.2021.1956175 |
| URL الوصول: | https://doaj.org/article/0f53475eb6434bd590c9863641c178c9 |
| رقم الأكسشن: | edsdoj.0f53475eb6434bd590c9863641c178c9 |
| قاعدة البيانات: | Directory of Open Access Journals |
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Full Text Finder | تدمد: | 27669645 |
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| DOI: | 10.1080/27669645.2021.1956175 |