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DOI | 10.1029/2018GL081882 |
A Fragment of Columbia Supercontinent: Insight for Cathaysia Block Basement From Tectono-Magmatic Evolution and Mantle Heterogeneity | |
Xia, Yan; Xu, Xisheng | |
2019-02-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:4页码:2012-2024 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The origin of the Cathaysia block and its position in Columbia supercontinent are still enigmatic. Paleoproterozoic magmatisms developed in the Cathaysia block due to two episodes of continental back-arc extension range in ages of circa 1.88-1.85 and 1.78-1.77 Ga. A long-lived ultradepleted mantle domain with highly incompatible element depletion related to average depleted mantle once underlaid the Cathaysia block is revealed by the highly depleted Hf-Nd isotopes of the Paleoproterozoic meta-mafic rocks. A self-consistent set of geological, geochronological, and geochemical data indicate that the Cathaysia was assembled and then maintained a position off the southern margin of North Australia Craton from the assembly to the accretion of Columbia supercontinent (circa 1.90 to 1.74 Ga). Given the evidence for Cathaysia block, mantle heterogeneity might provide an alternative approach of supercontinent reconstruction. |
英文关键词 | Cathaysia block north Australian craton ultradepleted mantle Columbia supercontinent reconstruction |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461855600014 |
WOS关键词 | GRANITES-TANAMI OROGEN ; A-TYPE GRANITES ; PB ZIRCON GEOCHRONOLOGY ; ND ISOTOPIC SYSTEMATICS ; ULTRA-DEPLETED MANTLE ; SOUTH CHINA EVIDENCE ; U-PB ; CENTRAL AUSTRALIA ; BACK-ARC ; HF ISOTOPES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25906 |
专题 | 气候变化 |
作者单位 | Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Xia, Yan,Xu, Xisheng. A Fragment of Columbia Supercontinent: Insight for Cathaysia Block Basement From Tectono-Magmatic Evolution and Mantle Heterogeneity[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(4):2012-2024. |
APA | Xia, Yan,&Xu, Xisheng.(2019).A Fragment of Columbia Supercontinent: Insight for Cathaysia Block Basement From Tectono-Magmatic Evolution and Mantle Heterogeneity.GEOPHYSICAL RESEARCH LETTERS,46(4),2012-2024. |
MLA | Xia, Yan,et al."A Fragment of Columbia Supercontinent: Insight for Cathaysia Block Basement From Tectono-Magmatic Evolution and Mantle Heterogeneity".GEOPHYSICAL RESEARCH LETTERS 46.4(2019):2012-2024. |
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