Global synchronous initiation of the 2nd episode of Sturtian glaciation: SIMS zircon U-Pb and O isotope evidence from the Jiangkou Group, South China
文献类型：期刊论文
| 作者 | Lan, Zhongwu; Li, Xian-Hua; Zhang, Qirui; Li, Qiu-Li |
| 刊名 | PRECAMBRIAN RESEARCH
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 267页码:28-38 |
| 关键词 | Xieshuihe Formation Jiangkou Group Sturtian glaciation Second episode Synchronous Stratigraphic correlation |
| DOI | 10.1016/j.precamres.2015.06.002 |
| 文献子类 | Article |
| 英文摘要 | Depositional age of the Xieshuihe Formation in the Nanhua Basin, South China has been controversial in the past two decades, which hampers our understanding of the synchroneity of the 2nd episode of Sturtian glaciation as well as regional stratigraphic correlation. In this study, a new SIMS zircon U-Pb age of 691.9 +/- 8.0 Ma (MSWD = 1.3) was obtained from a tuffaceous siltstone bed within the upper Xieshuihe Formation in the Nanhua Basin, which is within errors consistent with the ID-TIMS U-Pb zircon age of 688.6 + 9.5/-6.2 Ma from Yukon, Canada, the SHRIMP U-Pb zircon ages of 685 +/- 7 and 684 +/- 4 Ma from central Idaho, the SHRIMP U-Pb zircon age of 686 +/- 4 Ma from southeastern Idaho, and the SHRIMP U-Pb age of 703 +/- 6 Ma from northern Utah, North American Cordilleran margin. All these dated formations conformably underlie the upper Sturtian glaciogenic diamictite. Hence new ages suggest a maximum initiation age of ca. 690 Ma for the 2nd episode of Sturtian glaciation, which is synchronous in at least two geographically separated palaeocontinents. The commonly low delta O-18 values (3-5%.) from the zircon grains of Xieshuihe Formation suggest an influence of glaciation during their formation, probably by means of an ice-fire interaction process as previously proposed. Additionally, new age data suggest the Xieshuihe Formation is not correlative with the Liantuo Formation/Banxi Group as previously assumed. Rather, it could be correlated with the Liangjiahe Member, Fulu Formation in South China, which is feasible in terms of sedimentology and sequence stratigraphy. (C) 2015 Elsevier B.V. All rights reserved. |
| WOS关键词 | SNOWBALL EARTH ; YANGTZE BLOCK ; NEOPROTEROZOIC GLACIATIONS ; BREAK-UP ; SOUTHEASTERN IDAHO ; LIANTUO FORMATION ; CATHAYSIA BLOCKS ; NANHUA SYSTEM ; NORTHERN UTAH ; COLD CLIMATE |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000359874800002 |
| 资助机构 | National Natural Science Foundation of China(41273069) ; National Natural Science Foundation of China(41273069) ; National Natural Science Foundation of China(41273069) ; National Natural Science Foundation of China(41273069) ; Chinese National "973" Project(2013CB835005) ; Chinese National "973" Project(2013CB835005) ; Chinese National "973" Project(2013CB835005) ; Chinese National "973" Project(2013CB835005) ; National Natural Science Foundation of China(41273069) ; National Natural Science Foundation of China(41273069) ; National Natural Science Foundation of China(41273069) ; National Natural Science Foundation of China(41273069) ; Chinese National "973" Project(2013CB835005) ; Chinese National "973" Project(2013CB835005) ; Chinese National "973" Project(2013CB835005) ; Chinese National "973" Project(2013CB835005) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62279]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lan, Zhongwu,Li, Xian-Hua,Zhang, Qirui,et al. Global synchronous initiation of the 2nd episode of Sturtian glaciation: SIMS zircon U-Pb and O isotope evidence from the Jiangkou Group, South China[J]. PRECAMBRIAN RESEARCH,2015,267:28-38. |
| APA | Lan, Zhongwu,Li, Xian-Hua,Zhang, Qirui,&Li, Qiu-Li.(2015).Global synchronous initiation of the 2nd episode of Sturtian glaciation: SIMS zircon U-Pb and O isotope evidence from the Jiangkou Group, South China.PRECAMBRIAN RESEARCH,267,28-38. |
| MLA | Lan, Zhongwu,et al."Global synchronous initiation of the 2nd episode of Sturtian glaciation: SIMS zircon U-Pb and O isotope evidence from the Jiangkou Group, South China".PRECAMBRIAN RESEARCH 267(2015):28-38. |
入库方式： OAI收割
来源：地质与地球物理研究所
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