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|Title:||Discussion on detachment faulting and bimodal magmatism in the Palaeoproterozoic Willyama Supergroup, south-central Australia: keys to recognition of a multiply deformed Precambrian metamorphic core complex||Contributor(s):||Connor, CHH (author); Pries, WV (author); Page, RW (author); Stevens, BPJ (author); Plimer, IR (author); Ashley, Paul (author)||Publication Date:||2005||DOI:||10.1144/0016-764904-111||Handle Link:||https://hdl.handle.net/1959.11/1238||Abstract:||Gibson & Nutman (2004) postulate that the Willyama Supergroup in the southern Curnamona Province contains a 1690-1670 Ma metamorphic core complex, and imply that this is relevant to the genesis of the Broken Hill Pb-Zn-Ag deposit. We contend that this is a model driven, speculative interpretation predicated upon unsupported assertions that conflict with substantial stratigraphic and geochronological data. Not only does the paper fail to demonstrate an early high-grade event and formation of a metamorphic core complex at 1690-1670 Ma, but it is also factually incorrect in several critical geological and geochronological aspects. The detachment concepts of Gibson & Nutman may appear persuasive, but only by omitting reference to a huge body of published and recent mapping and laboratory research, by companies, universities, and geological surveys, some of which are cited here. Surprisingly, Gibson & Nutman ignore much recent work (e.g. Page et al, 2004) to which one of them has contributed.||Publication Type:||Journal Article||Source of Publication:||Journal of the Geological Society, 162(2), p. 409-416||Publisher:||Geological Society Publishing House||Place of Publication:||London, United Kingdom||ISSN:||0016-7649||Field of Research (FOR):||040313 Tectonics||Peer Reviewed:||Yes||HERDC Category Description:||C1 Refereed Article in a Scholarly Journal||Other Links:||http://proquest.umi.com/pqdweb?did=813517621&sid=1&Fmt=6&clientId=20804&RQT=309&VName=PQD||Statistics to Oct 2018:||Visitors: 202
|Appears in Collections:||Journal Article|
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