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Grenville-age belts and associated older terranes in Australia and Antarctica

Created 17/10/2025

Updated 17/10/2025

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During 1.3-1.0 Ga, multiple magmatic/tectonic events, causally linked to extensive mantle melting, markedly affected the Musgrave Block, the Albany-Fraser belt and parts of the east Antarctic shield. It is possible that southern parts of the central Australian Arunta Block were also affected by this event. Equivalent terranes can be juxtaposed in conventional Gondwana reconstructions of southwestern Australia and Antarctica. Effects of a ~1060 Ma Gondwana-wide magmatism include areally extensive dyke swarms and volcanics of the central Australian Bentley Supergroup. It is unclear to what extent the effects of a ~550 Ma convergent event that resulted in significant crustal overthickening and high-P recrystallisation in Musgrave Block rocks can be extrapolated to neighbouring terranes. Nonetheless, this event may be indicative of plate margin processes of latest Neoproterozoic age that controlled the assembly of central Australia.

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Field Value
Title Grenville-age belts and associated older terranes in Australia and Antarctica
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/98c5472e-7910-4dca-a400-0bd72654cd5b
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Grenville-age belts and associated older terranes in Australia and Antarctica". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/grenville-age-belts-and-associated-older-terranes-in-australia-and-antarctica