Stratigraphic and structural relations of strata enclosing the Dun Mountain Ophiolite Belt in the Arthurton—Clinton region, Southland, New Zealand
作者:
PeterA. Cawood,
期刊:
New Zealand Journal of Geology and Geophysics
(Taylor Available online 1987)
卷期:
Volume 30,
issue 1
页码: 19-36
ISSN:0028-8306
年代: 1987
DOI:10.1080/00288306.1987.10422191
出版商: Taylor & Francis Group
关键词: Maitai Group;Dun Mountain Ophiolite Belt;Livingstone-Macpherson Fault System;Permian;Triassic;biozone
数据来源: Taylor
摘要:
Strata lying between the Caples Group and the Murihiku Supergroup in the region between Arthurton and Clinton, Southland, and previously assigned to the Waipahi and Arthurton Groups, consist largely of Maitai Group rock units. Associated igneous rocks belong to the Dun Mountain Ophiolite Belt. Rock units south of the ophiolite belt consist, from south to north, of the Waiua Formation, Greville Formation, and undifferentiated lower Maitai Group. The last unit is restricted to a series offault blocks adjacent to the ophiolite belt and probably includes parts of both the Tramway and Little Ben Formations. The Livingstone-Macpherson Fault System separates the ophiolite belt and Maitai Group from the Caples Group and is up to 3 km wide in this region. It contains faultbounded blocks of volcanogenic sandstone inferred to belong to the Little Ben Formation and red and green sandstone and siltstone, here termed theWatties Sandstone. The latter shows a mixed silicic volcanic and low-grade metamorphic provenance similar to the Caples Group.
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