Facies analysis and sea-level change at the Guadalupian-Lopingian Global Stratotype (Laibin, South China), and its bearing on the end-Guadalupian mass extinction

doi:10.1144/0016-76492008-118

	Facies analysis and sea-level change at the Guadalupian-Lopingian Global Stratotype (Laibin, South China), and its bearing on the end-Guadalupian mass extinction
	Wignall, P. B.1; Vedrine, S.1; Bond, D. P. G.1; Wang, W.2 ; Lai, X. -L.3; Ali, J. R.4; Jiang, H. -S.2
	2009-07-01
发表期刊	JOURNAL OF THE GEOLOGICAL SOCIETY
ISSN	0016-7649
卷号	166 页码:655-666
摘要	The Guadalupian-Lopingian boundary stratotype at Penglaitan, and the nearby Tieqiao section, near Laibin, South China, record a series of major environmental changes within the Jiangnan Basin during a Mid-Permian biotic crisis. The sequence-stratigraphic, petrographic and palaeontological record of these sections has been studied and the associated strontium isotopic fluctuations have been assayed. Mass extinction of fusulinid foraminifers is most clearly associated in time with onset of volcanism and a relative sea-level fall that led to the establishment of mid-ramp conditions (Laibin Limestone) in settings that were previously dominated by radiolarian mudstones. The regression also coincides with a low point of Sr-87/Sr-86 ratios. The lowstand deposits contain mafic scoriaceous grains that record pyroclastic volcanism probably centred in the Emeishan flood basalt province 800 km to the west of Laibin. Thus, unusually violent eruptions associated with flood basalts in this province may have contributed to the environmental stresses responsible for the extinction event. Subsequent environmental changes included transgression, spread of dysoxic waters, indicated by populations of small pyrite framboids, and a major negative C-isotope excursion. All these phenomena have been previously related to the end-Guadalupian extinction but they in fact post-date the crisis because a post-extinction fauna of foraminifers is encountered at this time.
DOI	10.1144/0016-76492008-118
语种	英语
关键词[WOS]	UPPER PERMIAN BOUNDARY ; LARGE IGNEOUS PROVINCE ; SW CHINA ; DIVERSITY ; CARBONATES ; PATTERNS ; SECTION ; BASALTS ; FRANCE ; RECORD
资助项目	PW's Natural Environment Research Council[NE/D011558/1] ; Ministry of Education of China[B08030] ; State Administration of Foreign Expert Affairs, China ; J.R.A[HK RGC HKU700204]
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000267814700006
项目资助者	PW's Natural Environment Research Council ; Ministry of Education of China ; State Administration of Foreign Expert Affairs, China ; J.R.A
出版者	GEOLOGICAL SOC PUBL HOUSE
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/253
专题	中国科学院南京地质古生物研究所其他
通讯作者	Wignall, P. B.
作者单位	1.Univ Leeds, Sch Earth & Environm, Leeds LS2 9JT, W Yorkshire, England 2.Chinese Acad Sci, Nanjing Inst Geol & Paleontol, Nanjing 210008, Peoples R China 3.China Univ Geosci, Fac Geosci, Wuhan 430074, Hubei, Peoples R China 4.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Wignall, P. B.,Vedrine, S.,Bond, D. P. G.,et al. Facies analysis and sea-level change at the Guadalupian-Lopingian Global Stratotype (Laibin, South China), and its bearing on the end-Guadalupian mass extinction[J]. JOURNAL OF THE GEOLOGICAL SOCIETY,2009,166:655-666.
APA	Wignall, P. B..,Vedrine, S..,Bond, D. P. G..,Wang, W..,Lai, X. -L..,...&Jiang, H. -S..(2009).Facies analysis and sea-level change at the Guadalupian-Lopingian Global Stratotype (Laibin, South China), and its bearing on the end-Guadalupian mass extinction.JOURNAL OF THE GEOLOGICAL SOCIETY,166,655-666.
MLA	Wignall, P. B.,et al."Facies analysis and sea-level change at the Guadalupian-Lopingian Global Stratotype (Laibin, South China), and its bearing on the end-Guadalupian mass extinction".JOURNAL OF THE GEOLOGICAL SOCIETY 166(2009):655-666.