NDLI: Transgressive–regressive sequences on the slope of an isolated carbonate platform (Middle

Content Provider	Springer Nature Link
Author	Qiu, Zhen Wang, Qingchen Zou, Caineng Yan, Detian Wei, Hengye
Copyright Year	2013
Abstract	From the Middle to Late Permian, the Laibin area in Guangxi, South China, was situated on the slope of an isolated carbonate platform, on which continuous marine successions were deposited. Two global stratotype sections for the boundary between the Guadalupian (Middle Permian) and Lopingian (Late Permian) are located at Penglaitan and Tieqiao in the Laibin area, respectively, and thus are chosen for study. At the two locations, 14 facies are recognized in the Maokou and Heshan Formations, and they are further grouped into four facies associations (basin, lower slope, upper slope, and platform margin). Six main transgressive–regressive (TR) sequences are identified in strata from the Roadian (Middle Permian) to the Wuchiapingian (Late Permian). They are conformable marine sequences that were little influenced by regional uplift (Dongwu Movement) and so provide a good record of the sea-level changes in South China at this time. Based on the significant taxonomic selection and controversial marine faunal loss in the end-Guadalupian mass extinction, and the Middle-Late Permian sea-level changes recorded by the TR sequences in the Laibin area, it is suggested that this extinction event might have been triggered by the reduction and loss of shallow-marine habitat area caused by the end-Guadalupian regression. The global cooling and Emeishan volcanism also occurring at this time could have further enhanced this extinction event.
Starting Page	327
Ending Page	345
Page Count	19
File Format	PDF
ISSN	01729179
Journal	Facies
Volume Number	60
Issue Number	1
e-ISSN	16124820
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-01-09
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Facies Transgressive–regressive sequences The end-Guadalupian mass extinction Middle to Late Permian Laibin South China Sedimentology Biogeosciences Geochemistry Paleontology Ecology
Content Type	Text
Resource Type	Article
Subject	Geology Stratigraphy Paleontology

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