The zoned Bruinbun granitoid pluton and its aureole
作者:
Roger Bateman,
期刊:
Journal of the Geological Society of Australia
(Taylor Available online 1982)
卷期:
Volume 29,
issue 3-4
页码: 253-265
ISSN:0016-7614
年代: 1982
DOI:10.1080/00167618208729211
出版商: Taylor & Francis Group
关键词: Multiple pluton;fractionation;remelting;megacryst alignment;structural aureole;intrusive mechanisms;contact metamorphism
数据来源: Taylor
摘要:
The Bruinbun pluton is a small, massive, I‐type granitoid intruded into the meta‐sedimentary Hill End Trough, in eastern N.S.W. It is a multiple pluton representing two discrete magma pulses, the granodiorite core intruding the adamellite margin. A weak alignment of orthoclase megacrysts in the granitoids is best developed adjacent to both the internal and external intrusive contacts, and is considered by the writer to be a product of magmatic flow. Part of the northern contact and the southern and western contacts dip inward at moderate angles, whereas the eastern contact is vertical to outward‐dipping. The pluton is inferred to be mushroom‐shaped, and slightly tilted.
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