Retrograde Schists of the Amphibolite Facies at broken hill,New South Wales |
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| Authors: | R H Vernon D M Ransom |
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| Institution: | 1. School of Earth Sciences , Macquarie University , North Ryde, N.S.W., 2113;2. Department of Geophysics &3. Geochemistry , Australian National University , P.O. Box 4, Canberra, A.C.T., 2600 |
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| Abstract: | Aluminous, mafic, felsic, calcareous, and sulphide‐rich rocks have been involved in localized deformation and retrograde metamorphism at Broken Hill, western New South Wales, where retrograde schist‐zones intersect high‐grade, regional metamorphic rocks of the lower granulite facies (or the amphibolite‐granulite facies transition). Although technically retrograde, the schists contain mineral assemblages indicative of the lower amphibolite facies. The schist‐zones were formed by local folding, apparently as part of the third stage of deformation in the Broken Hill area. |
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| Keywords: | climatic change ESR analysis isotopes palaeotemperatures radiometric dating speleothems |
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