Lithofacies and glacio-tectonic deformation structures of the Tiesi'ao/Dongshanfeng Formation on the Yangtze Block, South China: Implications for Sturtian Glaciation dynamics

doi:10.1016/j.palaeo.2019.109481

NIGPAS OpenIR

	Lithofacies and glacio-tectonic deformation structures of the Tiesi'ao/Dongshanfeng Formation on the Yangtze Block, South China: Implications for Sturtian Glaciation dynamics
通讯作者	Zhu, Maoyan(myzhu@nigpas.ac.cn)
	Hu, Chunlin 1,2,3; Zhu, Maoyan 1,2,3
	2020-01-15
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	538 页码:16
摘要	The Cryogenian Period (similar to 720-635 Ma) witnessed the most extensive and prolonged glaciation events in Earth history. Vast ice sheets of at least two global glaciations, the Sturtian (similar to 720-660 Ma) and Marinoan (< 654-635 Ma), advanced to sea level at low latitudes, a scenario that is at the heart of the general Snowball Earth hypothesis. This hypothesis is supported by results of recent work in geochronology and geochemistry, but certain parts of the glacial sedimentary records remained debated regarding ice sheet dynamics. Here we report findings from four sections of the Sturtian-age Tiesi'ao/Dongshanfeng Formation and related strata on the Yangtze Block in South China. Our work has documented the presence of four lithofacies: massive diamictite, crudely stratified diamictite, stratified to massive pebbly sandstone and dropstone-bearing laminated siltstone and our interpretation is that these rocks were deposited in proximal glacio-marine environments during five successive episodes of glacial advance and retreat. We have also identified an interval of deformation structures near the base of the Tiesi'ao/Dongshanfeng Formation that is characterized by upward increasing strain intensity, indicating that these structures were caused by overriding ice sheets. All the observations collectively suggest that the Sturtian ice sheets in South China were warm-based, rapidly moving, and sensitive to changes in climate. Further, our data suggest that the ice grounding line reached the slope area, implying a major drop in global sea level, enormous ice sheet thickness, or both during the Sturtian Glaciation.
关键词	Cryogenian Snowball Earth Sedimentology Diamictite Chang'an/Jiangkou Glaciation
DOI	10.1016/j.palaeo.2019.109481
收录类别	SCI
语种	英语
关键词[WOS]	NEOPROTEROZOIC SNOWBALL EARTH ; CRYOGENIAN NANTUO FORMATION ; PORT-ASKAIG FORMATION ; PB ZIRCON AGE ; GLACITECTONIC DEFORMATION ; OCEAN ACIDIFICATION ; MANGANESE DEPOSIT ; CHUOS FORMATION ; FIQ GLACIATION ; TRIPLE OXYGEN
资助项目	Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18000000]
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000508751800044
项目资助者	Strategic Priority Research Program (B) of the Chinese Academy of Sciences
出版者	ELSEVIER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/31420
通讯作者	Zhu, Maoyan
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Nanjing 210008, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Hu, Chunlin,Zhu, Maoyan. Lithofacies and glacio-tectonic deformation structures of the Tiesi'ao/Dongshanfeng Formation on the Yangtze Block, South China: Implications for Sturtian Glaciation dynamics[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,538:16.
APA	Hu, Chunlin,&Zhu, Maoyan.(2020).Lithofacies and glacio-tectonic deformation structures of the Tiesi'ao/Dongshanfeng Formation on the Yangtze Block, South China: Implications for Sturtian Glaciation dynamics.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,538,16.
MLA	Hu, Chunlin,et al."Lithofacies and glacio-tectonic deformation structures of the Tiesi'ao/Dongshanfeng Formation on the Yangtze Block, South China: Implications for Sturtian Glaciation dynamics".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 538(2020):16.