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New xenotime ages obtained from the Paleoproterozoic Kimberley Group, NW Australia: implications for regional hydrothermal events

文献类型：期刊论文

作者Lan, Z-W1,2; Chen, Z-Q1
刊名AUSTRALIAN JOURNAL OF EARTH SCIENCES
出版日期2012
卷号59期号:1页码:119-133
关键词xenotime hydrothermal Paleoproterozoic King Leopold Sandstone Kimberley Group Kimberley northwestern Australia
ISSN号0812-0099
DOI10.1080/08120099.2012.617781
文献子类Article
英文摘要New xenotime ages are obtained from the Paleoproterozoic King Leopold Sandstone of the Kimberley Group, NW Australia. The concordant age of 1679 +/- 13 Ma can be equated with the ca 1.7 Ga xenotime age within errors obtained from theWarton and Pentecost Sandstones of the same group. These ages are much younger than the robust SHRIMP ages (1790 +/- 4 Ma) obtained from zircons from the dolerite dyke intrusions, and thus indicate that the xenotime growths recorded in the Kimberley Group are unlikely to be diagenetic in origin but may have resulted from the post-depositional hydrothermal event. The overgrowth of xenotime recorded from these three units of the Kimberley Group was probably caused by the same hydrothermal event that took place ca 1.7 Ga ago in Kimberley. Radiogenic Pb loss occurred at ca 325 Ma, which could have been caused by the 400-300Ma Alice Springs Orogeny. This Pb loss event was responsible for the discordant U-Pb ages from 1.6 to 1.1 Ga.
WOS关键词U-PB AGES ; WESTERN-AUSTRALIA ; DIAGENETIC XENOTIME ; SEDIMENTARY-ROCKS ; DETRITAL ZIRCON ; AUTHIGENIC XENOTIME ; NORTHERN AUSTRALIA ; SOUTH-AFRICA ; CONSTRAINTS ; REE
WOS研究方向Geology
语种英语
WOS记录号WOS:000301706600007
出版者TAYLOR & FRANCIS LTD
资助机构Australian Research Council(DP07752298) ; Australian Research Council(DP07752298) ; Australian Research Council(DP07752298) ; Australian Research Council(DP07752298) ; Australian Research Council(DP07752298) ; Australian Research Council(DP07752298) ; Australian Research Council(DP07752298) ; Australian Research Council(DP07752298)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84682]  
专题中国科学院地质与地球物理研究所
通讯作者Lan, Z-W
作者单位1.Univ Western Australia, Sch Earth & Environm, Crawley, WA 6009, Australia
2.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Lan, Z-W,Chen, Z-Q. New xenotime ages obtained from the Paleoproterozoic Kimberley Group, NW Australia: implications for regional hydrothermal events[J]. AUSTRALIAN JOURNAL OF EARTH SCIENCES,2012,59(1):119-133.
APA Lan, Z-W,&Chen, Z-Q.(2012).New xenotime ages obtained from the Paleoproterozoic Kimberley Group, NW Australia: implications for regional hydrothermal events.AUSTRALIAN JOURNAL OF EARTH SCIENCES,59(1),119-133.
MLA Lan, Z-W,et al."New xenotime ages obtained from the Paleoproterozoic Kimberley Group, NW Australia: implications for regional hydrothermal events".AUSTRALIAN JOURNAL OF EARTH SCIENCES 59.1(2012):119-133.

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来源：地质与地球物理研究所

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