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The Cottons Breccia (ediacaran) and its tectonostratigraphic context within the Grassy Group, King Island, Australia: A rift-related gravity slump deposit

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dc.contributor.authorDireen, N.G.
dc.contributor.authorJago, J.B.
dc.date.issued2008
dc.description.abstractThe Cottons Breccia is part of the upper Neoproterozoic (Ediacaran: 586-572 Ma) Grassy Group, exposed on King Island, Tasmania. This formation has been widely interpreted as an unambiguous tillite, in support of tectono-climatic models that invoke catastrophic latest Neoproterozoic global glaciation. However, dissenting opinions interpret the Cottons Breccia as a tectonic breccia. In this paper, we review the tectonostratigraphy of the Cottons Breccia, and the enclosing Grassy Group. We find no unambiguous evidence for a direct glacial origin, as postulated by some early workers. An interpretation of the Cottons Breccia as a deposit within half-graben in the shoulder regions of an actively developing latest Neoproterozoic volcanic rifted margin is consistent with all the available sedimentological, structural, geochronological, and tectonic evidence. © 2008 Elsevier B.V. All rights reserved.
dc.identifier.citationPrecambrian Research, 2008; 165(1/2):1-14
dc.identifier.doi10.1016/j.precamres.2008.05.008
dc.identifier.issn0301-9268
dc.identifier.issn1872-7433
dc.identifier.urihttps://hdl.handle.net/11541.2/112343
dc.language.isoen
dc.publisherElsevier
dc.rightsCopyright status unknown
dc.source.urihttps://doi.org/10.1016/j.precamres.2008.05.008
dc.titleThe Cottons Breccia (ediacaran) and its tectonostratigraphic context within the Grassy Group, King Island, Australia: A rift-related gravity slump deposit
dc.typeJournal article
pubs.publication-statusPublished
ror.mmsid9915911168701831

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