Low‐temperature thermochronology of the Mt Painter Province, South Australia

Autor: M. M. Mitchell, D. A. Foster, Paul B. O'Sullivan, M J Hartley, Barry P. Kohn
Rok vydání: 2002
Předmět:
Zdroj: Australian Journal of Earth Sciences. 49:551-563
ISSN: 1440-0952
0812-0099
DOI: 10.1046/j.1440-0952.2002.00937.x
Popis: Apatite fission track results are reported for 26 outcrop samples from the Mt Painter Inlier, Mt Babbage Inlier and adjacent Neoproterozoic rocks of the northwestern Curnamona Craton of South Australia. Forward modelling of the data indicates that the province experienced variable regional cooling from temperatures >110°C during the Late Palaeozoic (Late Carboniferous to Early Permian). The timing of this cooling is similar to that previously reported from elsewhere in the Adelaide Fold Belt and the Curnamona Craton, suggesting that the entire region underwent extensive Late Palaeozoic cooling most likely related to the waning stages of the Alice Springs or Kanimblan Orogenies. Results from the Paralana Fault Zone indicate that the eastern margin of the Mt Painter Inlier experienced a second episode of cooling (∼40–60°C) during the Paleocene to Eocene. The entire region also experienced significant cooling (less than ∼40°C) during the Late Cretaceous to Palaeogene in response to unroofing and/or a decreas...
Databáze: OpenAIRE
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