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The AAPG/Datapages Combined Publications Database
CSPG Bulletin
Abstract
Gravitational Tectonics
ABSTRACT
In some tectonic phenomena, the influence of unaided gravity is very apparent. If we exclude its influence on ordinary processes of sedimentation and of vulcanism, and exclude also those features in which gravity acts as a result of the withdrawal of underlying support, there are still gravitational structures of very large scale to be accounted for. These are attributed to five gravitational processes, called here Free Glide, Compressional Glide, Chaotic Compressional Glide, Compressional Slump, and Free Slump. This tentative classification is thus founded on two independent criteria: the necessity or otherwise of compressive forces, and the form in which the moving rock mass is transported. Examples of all five types are suggested, some of them being almost beyond dispute, others quite provisional.
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