KMS Nanjing Institute of Geology and Palaeonotology,CAS
Lithofacies and glacio-tectonic deformation structures of the Tiesi'ao/Dongshanfeng Formation on the Yangtze Block, South China: Implications for Sturtian Glaciation dynamics | |
Hu, Chunlin (胡春林)1,2,3; Zhu, Maoyan (朱茂炎)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/332004/31422 |
专题 | 中国科学院南京地质古生物研究所 |
通讯作者 | Zhu, Maoyan (朱茂炎) |
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 |
第一作者单位 | 中国科学院南京地质古生物研究所 |
通讯作者单位 | 中国科学院南京地质古生物研究所 |
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. |
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