Bo and illite crystallinity studies of K-white micas in rocks from fore-arc basin and accretionary complex sequences, southern New England fold belt, NSW, Australia

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Authors:Offler, R.; Hand, Martin; Bale, R.
Volume Title:Sciences Géologiques (Bulletin)
Source:Sciences Géologiques (Bulletin), 40(3), p.245-254. Publisher: Université Louis-Pasteur, Institut de Géologie, Strasbourg, France. ISSN: 0302-2692
Publication Date:1987
Note:In English. Based on Publisher-supplied data
Summary:In the Southern New England Fold Belt, studies of K-white micas have shown that the Tamworth Belt and Tablelands complex contain sequences with distinctive metamorphic imprints. The white micas in the forearc basin sediments of the Tamworth Belt record low-P conditions, while those in the accretionary complex sequences of the Tablelands complex show an intermediate P character. The results are in accord with the plate tectonic models proposed for the Southern New England Fold Belt. Illite crystallinity analyses have revealed that rocks of diagenetic to lower anchimetamorphic grade are developed in the forearc succession and diagenetic to epimetamorphic grade in the accretionary complex, with grade increasing progressively from south to north. They also indicate that the Peel fault system is not a major zone of thrusting. [Authors' abstract] [A.W.H.]
Subjects:Accretionary wedges; Basins; Crystallinity; Faults; Fold belts; Fore-arc basins; Grade; Illite; Mica group; Muscovite; New England Orogeny; P-T conditions; Sheet silicates; Silicates; Thrust faults; Zoning; Australasia; Australia; New South Wales Australia; Tamworth Belt; Peel fault system; Tablelands Complex
Coordinates:S373000 S281500 E1533000 E1410000
Abstract Numbers:89M/1329
Record ID:2014077165
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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