The Harry Creek Deformed Zone, a retrograde schist zone of the Arunta Block, central Australia
作者:
A. R. Allen,
L. P. Black,
期刊:
Journal of the Geological Society of Australia
(Taylor Available online 1979)
卷期:
Volume 26,
issue 1-2
页码: 17-28
ISSN:0016-7614
年代: 1979
DOI:10.1080/00167617908729063
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The Harry Creek Deformed Zone, a retrograde schist zone of epidote amphibolite facies grade, which separates the granulite facies Utralanama Block from the amphibolite facies Ankala Block in the southeastern Strangways Range, N.T., is typical of the retrograde schist zones transecting the Arunta Block. Associated with the deformed zone is a small deformed granitic pluton and its various offshoots—the Gumtree Granite Suite—which provides structural and geochrono‐logical evidence that the Harry Creek Deformed Zone has had a polyphase deforma‐tional history. Early movements within the deformed zone pre‐dated intrusion of the Gumtree Granite Suite and resulted in the movement of the Utralanama and Ankala Blocks into their present juxtaposition. Reactivation of much of the zone during the Alice Springs Orogeny brought about the schistose character of the zone and the deformation of the granitic rocks. Further minor reactivation of the zone, subsequent to the main phase of the Alice Springs Orogeny, resulted in limited development of pseudotachylytes.
点击下载:
PDF (1060KB)
返 回