Composition, timing, and provenance of hydrothermal fluids in the Tanami-Arunta regions  


Authors / CoAuthors

Wygralak, A.S. | Mernagh, T.P.

Abstract

Presented at the Evolution and metallogenesis of the North Australian Craton Conference, 20-22 June 2006, Alice Springs. This presentation summarises research work, conducted during 1999 - 2000, aimed at determining the physico-chemical characteristics, timing, and provenance of palaeo-fluid flow across a large portion of the Northern Territory, from the Tanami Region in the west to the Aileron and Warumpi Provinces of the Arunta Region in the east and south, respectively. It also includes the Davenport Province of the Tennant Creek Inlier. The work is based on a study of quartz veining in The Granites, Dead Bullock Soak (DBS) and Tanami goldfields, and approximately 120 outcropping quartz vein clusters scattered throughout the entire region. The research included microthermometric analysis and Raman microprobing of ~3500 fluid inclusions, ~70 ä18O analyses of vein quartz and ~50 40Ar/39Ar age determinations of vein related micas. It resulted in delineation of 11 areas with different fluid characteristics ('fluid domains') and five areas with different age of vein-related micas ('age domains'). Within the Arunta region it also defined a northwest-trending zone where fluids have similar characteristics to the goldbearing fluids of the Tanami region, therefore indicating potential for further discoveries of gold mineralisation. <p>Related product:<a href="https://www.ga.gov.au/products/servlet/controller?event=GEOCAT_DETAILS&amp;catno=64764">Evolution and metallogenesis of the North Australian Craton Conference Abstracts</p>

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nonGeographicDataset

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70534

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MNHD  

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Commonwealth of Australia (Geoscience Australia)  

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Commonwealth of Australia (Geoscience Australia)  
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Australia

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  • PowerPoint
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  • geology
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  • metallogenesis
  • AU-NT
Australian and New Zealand Standard Research Classification (ANZSRC)
  • Earth Sciences
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2006-01-01T00:00:00

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