Platform (geology)

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Sandy platform above the first Lusatian basement in the Welzow-South open-cast mine
Geologic provinces of the world (USGS)

In geology, a platform is a continental area covered by relatively flat or gently tilted, mainly sedimentary strata, which overlie a basement of consolidated igneous or metamorphic rocks of an earlier deformation. Platforms, shields and the basement rocks together constitute cratons.[1] Platform sediments can be classified into the following groups: a "protoplatform" of memtamorphosed sediments at the bottom, a "quasiplatform" of slightly deformed sediments, a "cataplatform", and a "othoplatform" at the top. The Mesoproterozoic Jotnian sediments of the Baltic area are examples of a "quasiplatform".[2]

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  1. ^ Parker, Sybil P. (Ed.). 1997. McGraw-Hill Dictionary of Geology and Mineralogy. New York: McGraw-Hill.
  2. ^ Nagornji, M.A.; Nikolaev, V.G. (2005). "The quasiplatform sediments of the East European Platform". Russian Journal of Earth Sciences 7. doi:10.2205/2005ES000171.