Tectonically deformed sand volcanoes in a Precambrian greywacke, northern territory of Australia
作者:
M. R. Walter,
期刊:
Journal of the Geological Society of Australia
(Taylor Available online 1972)
卷期:
Volume 18,
issue 4
页码: 395-399
ISSN:0016-7614
年代: 1972
DOI:10.1080/00167617208728777
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Structures previously described as umbrella‐shaped probable fossils are shown to be tectonically deformed cylindrical to conical sand volcanoes. They occur in the upper parts of greywacke beds in the middle Precambrian Pine Creek Geosyncline. The anisotropy caused by the occurrence of the volcanoes resulted in the localization of stresses during the deformation of the geosynclinal sequence, causing the formation of radial and concentric fractures in each of the volcanoes.
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