Journal article

Low temperature Phanerozoic history of the northern Yilgarn Craton, Western Australia

UD Weber, BP Kohn, AJW Gleadow, DR Nelson

Tectonophysics | ELSEVIER | Published : 2005

Abstract

The Phanerozoic cooling history of the Western Australian Shield has been investigated using apatite fission track (AFT) thermochronology. AFT ages from the northern part of the Archaean Yilgarn Craton, Western Australia, primarily range between 200 and 280 Ma, with mean confined horizontal track lengths varying between 11.5 and 14.3 μm. Time-temperature modelling of the AFT data together with geological information suggest the onset of a regional cooling episode in the Late Carboniferous/Early Permian, which continued into Late Jurassic/Early Cretaceous time. Present-day heat flow measurements on the Western Australian Shield fall in the range of 40-50 mW m . If the present day geothermal g..

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