High-Grade Reworking of Central Australian Granulites: Metamorphic Evolution of the Arunta Complex

High-Grade Reworking of Central Australian Granulites: Metamorphic Evolution of the Arunta Complex

The poly-metamorphic evolution of the Strangways Range granulites of central Australia has been constrained by the phase stability relationships of silica-saturated aluminous gneisses in KFMASH, in conjunction with geothermobarometry and equilibrium thermodynamics. Two contrasting, but overlapping,...

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Veröffentlicht in:Journal of petrology 1992-08, Vol.33 (4), p.917-962
1. Verfasser: GOSCOMBE, B
Format: Artikel
Sprache:eng
Schlagworte:
Crystalline rocks
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochemistry & Geophysics
Igneous and metamorphic rocks petrology, volcanic processes, magmas
Physical Sciences
Science & Technology
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Zusammenfassung:The poly-metamorphic evolution of the Strangways Range granulites of central Australia has been constrained by the phase stability relationships of silica-saturated aluminous gneisses in KFMASH, in conjunction with geothermobarometry and equilibrium thermodynamics. Two contrasting, but overlapping, P-T paths are proposed. The first (M1, at 1800 Ma) had an ‘anticlockwise’ P-T path (i.e., increasing P/T with time) and was terminated by isobaric cooling from 850–950 °C, at 8–9 kb, to a stable crustal geotherm (
ISSN:0022-3530
1460-2415
DOI:10.1093/petrology/33.4.917