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Widely distributed glacially derived material indicates that an extensive ice sheet covered Western Australia from at least the Gzhelian to mid-Sakmarian times. The earliest glacial sequences may be Bashkirian in the subsurface of the Southern Carnarvon and Canning Basins, although definitive glacial characteristics are less well defined. The younger glacially influenced successions are present in nearly all Phanerozoic basins in Western Australia, and typically comprise a lowermost glacial facies, middle marine mudstone facies, and uppermost fluvial–deltaic strata. Current palynological correlation show that the tripartite successions may not be coeval among all basins, which appears to contradict models of Gondwana-wide glaciation...

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