Structural evidence of the age of folded rocks on the south coast of New South Wales
作者:
M. A. Etheridge,
D. M. Ransom,
P. F. Williams,
C. J. L. Wilson,
期刊:
Journal of the Geological Society of Australia
(Taylor Available online 1973)
卷期:
Volume 19,
issue 4
页码: 465-470
ISSN:0016-7614
年代: 1973
DOI:10.1080/00167617308728814
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The pre‐Devonian sedimentary and volcanic sequence exposed along the south coast of New South Wales has previously been divided into three stratigraphic groups: (1) Upper Ordovician graptolite‐bearing slate which is conformable with (2) interlayered thinly‐bedded greywacke and pelite of undifferentiated Ordovician age and (3) Cambrian successions of interlayered chert, pelite and volcanic rock at Bate‐mans Bay and Narooma. The main bases for this subdivision are a change in rock types between (1) and (2), and the unconformity between (2) and (3) formerly proposed on the basis of changes in rock type and fold style across the boundary. New structural data are presented which refute the presence of the unconformity, and conformity of (2) and (3) with the fossiliferous slates is established.
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