Paleo-environmental cyclicity in the Early Silurian Yangtze Sea (South China): Tectonic or glacio-eustatic control?

doi:10.1016/j.palaeo.2016.11.007

	Paleo-environmental cyclicity in the Early Silurian Yangtze Sea (South China): Tectonic or glacio-eustatic control?
	Liu, ZH; Algeo, TJ; Guo, XS; Fan, JX (樊隽轩); Du, XB; Lu, YC
	2017
发表期刊	Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN	0031-0182
卷号	466 页码:59-76
摘要	The Yangtze Sea of the South China Craton experienced strong environmental perturbations during the first similar to 5-6 Myr of the Silurian. The Lower Silurian Lungmachi Formation in the Jiaoye-1 drillcore (Chongqing, China) records three sea-level cycles (stratigraphic sequences) characterized by rapid deepening at the base of each cycle followed by slow shallowing. Each deepening event was associated with shifts toward higher marine productivity, more intensely reducing bottomwater conditions, reduced watermass restriction, lower detrital input, and enhanced siliciclastic weathering intensity. We infer control by glacio-eustasy, in which deglacial sea-level rises and concurrent climatic warming triggered the observed environmental changes. Shallowing was associated with renewed glaciation and characterized by the opposite set of conditions. The results of this study thus provide evidence in support of continued continental glaciation during the Early Silurian, i.e., following the termination of the major end-Ordovician Hirnantian glaciation. The study core also exhibits a long-term shallowing trend through the entire Lower Silurian, the origin of which may have been tectono-epeirogenic uplift of the South China Craton during the Kwangsian Orogeny. (C) 2016 Elsevier B.V. All rights reserved.
关键词	Eustasy Sea level Hirnantian Redox Organic carbon Kwangsian orogeny
DOI	10.1016/j.palaeo.2016.11.007
收录类别	SCI
语种	英语
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000392766900005
出版者	ELSEVIER SCIENCE BV
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/13730
专题	中国科学院南京地质古生物研究所其他
通讯作者	Algeo, TJ
推荐引用方式 GB/T 7714	Liu, ZH,Algeo, TJ,Guo, XS,et al. Paleo-environmental cyclicity in the Early Silurian Yangtze Sea (South China): Tectonic or glacio-eustatic control?[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017,466:59-76.
APA	Liu, ZH,Algeo, TJ,Guo, XS,Fan, JX ,Du, XB,&Lu, YC.(2017).Paleo-environmental cyclicity in the Early Silurian Yangtze Sea (South China): Tectonic or glacio-eustatic control?.Palaeogeography, Palaeoclimatology, Palaeoecology,466,59-76.
MLA	Liu, ZH,et al."Paleo-environmental cyclicity in the Early Silurian Yangtze Sea (South China): Tectonic or glacio-eustatic control?".Palaeogeography, Palaeoclimatology, Palaeoecology 466(2017):59-76.