Abstract
A description of the structural environment and major rock types of each of the seven known areas of Australian charnockitic rocks is supported by representative chemical analyses (several of which are new). In some areas the whole terrain is dominantly of granulite metamorphic facies, but in other areas charnockitic rocks occur as relics set in rocks of amphibolite facies. The proximity of most areas to major faults suggests that the well-known texture of most charnockitic rocks may be due to either heat-transfer up deep-seated thrust-faults and plastic shear zones, or to slumping of blocks of the basement into hotter zones by normal faults.
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