Foraminiferal Assemblages and Microfacies Analysis of Triassic − Jurassic Boundary Successions in Bitlis Massif Carbonates, Eastern Türkiye: Insights Into Depositional Environments and Paleoenvironmental Changes
dc.authorscopusid | 36774402100 | |
dc.authorscopusid | 60104636500 | |
dc.contributor.author | Atakul-Özdemir, Ayşe | |
dc.date.accessioned | 2025-09-30T16:36:06Z | |
dc.date.available | 2025-09-30T16:36:06Z | |
dc.date.issued | 2025 | |
dc.department | T.C. Van Yüzüncü Yıl Üniversitesi | en_US |
dc.department-temp | [Atakul-Özdemir] Ayşe, Van Yüzüncü Yıl Üniversitesi, Van, Turkey; [null] null, Van Yüzüncü Yıl Üniversitesi, Van, Turkey | en_US |
dc.description.abstract | Triassic-Jurassic boundary carbonate deposits of the Bitlis Massif (Çakmakkaya village, Elazığ, Türkiye) are considered to delineate paleoenvironmental changes, extinction events, and post-extinction recovery patterns through a combined approach of foraminiferal biostratigraphy and microfacies analysis. The studied sequences representing the most complete records of this boundary in eastern Türkiye are mainly dominated by peritidal carbonates. A high-resolution biostratigraphic investigation has defined four main biozones: (1) Aulotortus ex gr. sinuosus Assemblage Zone (Norian), (2) Triasina hantkeni Range Zone (Norian-Rhaetian), (3) Thaumatoporella sp. Zone (Hettangian), and (4) Everticyclammina sp. Zone (Sinemurian). The Late Triassic interval of the successions is generally characterized by involutinid forms, which abruptly disappear at the Triassic-Jurassic boundary. Following this extinction, the Early Jurassic is generally depicted by fossil-poor levels dominated by Thaumatoporella algae and by the appearance of siphovalvulinids and everticyclammins. The extinction of Triasina hantkeni and the disappearance of particular benthic foraminifers depict the Triassic-Jurassic boundary within the studied carbonate sequences, consistent with other Tethyan carbonate successions. Detailed microfacies analyses have revealed distinct microfacies types, suggesting a depositional model encompassing a transition from low-energy lagoonal environments to high-energy shoal settings and open marine conditions. The biotic events and microfacies characteristics underscore the global impact of this boundary event on the shallow marine carbonate platforms. © 2025 Elsevier B.V., All rights reserved. | en_US |
dc.identifier.doi | 10.1016/j.jseaes.2025.106808 | |
dc.identifier.issn | 1367-9120 | |
dc.identifier.scopus | 2-s2.0-105016403995 | |
dc.identifier.scopusquality | Q1 | |
dc.identifier.uri | https://doi.org/10.1016/j.jseaes.2025.106808 | |
dc.identifier.uri | https://hdl.handle.net/20.500.14720/28607 | |
dc.identifier.volume | 294 | en_US |
dc.identifier.wosquality | Q2 | |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Ltd | en_US |
dc.relation.ispartof | Journal of Asian Earth Sciences | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Bitlis Massif | en_US |
dc.subject | Microfacies Analysis | en_US |
dc.subject | Triasina hantkeni | en_US |
dc.subject | Triassic-Jurassic Boundary | en_US |
dc.title | Foraminiferal Assemblages and Microfacies Analysis of Triassic − Jurassic Boundary Successions in Bitlis Massif Carbonates, Eastern Türkiye: Insights Into Depositional Environments and Paleoenvironmental Changes | en_US |
dc.type | Article | en_US |
dspace.entity.type | Publication |