ION-PROBE ZIRCON DATING OF A MID-EARLY CAMBRIAN TUFF IN SOUTH-AUSTRALIA

被引：69

作者：

COOPER, JA ^{[1
]}

JENKINS, RJF ^{[1
]}

COMPSTON, W ^{[1
]}

WILLIAMS, IS ^{[1
]}

机构：

[1] AUSTRALIAN NATL UNIV,RES SCH EARTH SCI,CANBERRA,ACT 2600,AUSTRALIA

来源：

JOURNAL OF THE GEOLOGICAL SOCIETY | 1992年 / 149卷

关键词：

D O I：

10.1144/gsjgs.149.2.0185

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Ion microprobe U-Pb dating of zircons extracted from a narrow tuff band in the Lower Cambrian Heatherdale Shale of South Australia produced an age of 526 +/- 4 Ma (95% confidence limits). Local and regional trilobite and archaeocyathan evidence indicates that the tuff is latest Atdabanian or Botomian. The tuff shortly predates the onset of the Delamerian Orogeny.

引用

页码：185 / 192

页数：8

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