TY  - JOUR
A1  - Heuer, Franziska
A1  - Leda, Lucyna
A1  - Moradi-Salimi, Hemen
A1  - Gliwa, Jana
A1  - Hairapetian, Vachik
A1  - Korn, Dieter
T1  - The Permian–Triassic boundary section at Baghuk Mountain, Central Iran: carbonate microfacies and depositional environment
Y1  - 2021-11-03
VL  - 102
IS  - 2
SP  - 331
EP  - 350
JF  - Palaeobiodiversity and Palaeoenvironments
DO  - 10.1007/s12549-021-00511-1
PB  - Springer Berlin Heidelberg
N2  - Sections at Baghuk Mountain, 45 km NNW of Abadeh (Central Iran), have excellent exposures of fossiliferous marine Late Permian to Early Triassic sedimentary successions. Detailed bed-by-bed sampling enables the analysis of microfacies changes of three successive rock units across the Permian–Triassic boundary. The Late Permian Hambast Formation is mainly the result of biogenic carbonate production. Its carbonate microfacies is dominated by biogen-rich and bioturbated nodular limestones, indicating a well-oxygenated aphotic to dysphotic environment. The biogen-dominated carbonate factory in the Permian ceased simultaneously with the main mass extinction pulse, which is marked by a sharp contact between the Hambast-Formation and the overlaying Baghuk Member (= ‘Boundary Clay’). The clay and silt deposits of the Baghuk Member with some carbonate beds show only a few signs of bioturbation or relics of benthic communities. The Early Triassic Claraia Beds are characterised by a partly microbially induced carbonate production, which is indicated by frequent microbialite structures. The depositional environment does not provide evidence of large amplitude changes of sea level or subaerial exposure during the Permian–Triassic boundary interval. The deposition of the Baghuk Mountain sediments took place in a deep shelf environment, most of the time below the storm wave base.
UR  - http://resolver.sub.uni-goettingen.de/purl?gldocs-11858/10883
ER  -