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Book Chapter

Biostratigraphy and stratigraphic subdivision of Cryogenian successions of Australia in a global context

By
Kathleen Grey
Kathleen Grey
Geological Survey of Western Australia, Department of Mines and Petroleum, 100 Plain Street, Western Australia, 6076
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Andrew C. Hill
Andrew C. Hill
Centro de Astrobiología (INTA-CSIC), Instituto Nacional de Técnica Aeroespacial, Ctra de Ajalvir, km 4, 28850 Torrejón de Ardoz, Madrid, Spain
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Clive Calver
Clive Calver
Mineral Resources Tasmania, PO Box 56, Rosny Park, Tasmania 7018, Australia
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Published:
January 01, 2011

Abstract

Cryogenian correlation in Australia is based on an extensive data set from the Centralian Superbasin and Adelaide Rift Complex and integrates biostratigraphy and isotope chemostratigraphy to provide a three-dimensional interpretation based on outcrop and drill holes. Studies are ongoing, but newer data are consistent with the distributions discussed here. From the chemostratigraphic and biostratigraphic viewpoint, the first appearance of the acritarch Cerebrosphaera buickii, coupled with a large negative isotope excursion at c. 800 Ma, supported by the first appearance of the stromatolite Baicalia burra, seems to have potential for boundary placement. It is widely recognized across Australia and seems to have potential globally.

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Contents

Geological Society, London, Memoirs

The Geological Record of Neoproterozoic Glaciations

Emmanuelle Arnaud
Emmanuelle Arnaud
University of Guelph, Canada
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Galen P. Halverson
Galen P. Halverson
McGill University, Canada
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Graham Shields-Zhou
Graham Shields-Zhou
University College London, UK
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Geological Society of London
Volume
36
ISBN electronic:
9781862394117
Publication date:
January 01, 2011

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