Tasman Geosyncline greenstones and ophiolites
作者:
K. A. W. Crook,
E.Anne Felton,
期刊:
Journal of the Geological Society of Australia
(Taylor Available online 1975)
卷期:
Volume 22,
issue 1
页码: 117-131
ISSN:0016-7614
年代: 1975
DOI:10.1080/00167617408728879
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Palaeozoic greenstones lying at the base of stratigraphic sequences or in fault blocks in the Tasman Geosyncline are compared with the Penrose Conference definnition of an ophiolite by using tabulated petrological, structural, and metallogenic data. Of 45 occurrences, only 9 are recognizably ophiolites: 4 are in rift zones adjoining Precambrian continental crust at the ends of the geosyncline; and away from the margins, in that part of the geosyncline most typically of West Pacific‐type, only 5 of the 33 greenstone occurrences are recognizably ophiolites. Ophiolites are rare in the Tasman Geosyncline, in contrast to several Atlantic‐type geosynclines. This may be a characteristic of West Pacific‐type geosynclines in general.
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