Abstract
Coal is typical of sedimentary deposits, Occurrence in a coal basin. The original nearly horizontal continuous coal seam was divided into different size; different depth containing coal segment by late tectonic movement, but its scope is not affected by today's "basin" restrictions. With the concept of coal occurrence tectonic unit to reflect the current Coal Occurrence Characteristics and build a prototype coal basin types that prototype into a coal basin tectonic movement after the formation of today's coal occurrence tectonic unit. In Northwest coal hosting area, the main coal bearing strata include Carboniferous-Permian, Upper Triassic, Lower-Middle Jurassic and Lower Cretaceous, and its distribution is regular; the center and strength of coal accumulation were variation in different coal-forming period; the types of basin are multiple, including Passive Margins, Peripheral Foreland, Intracontinental Rift, Intermontane, Strike-slip pull-apart, Strike-slip pull-apart, Inter-montane; moreover, one belt and two rings constitute the tectonic framework of Northwest coal hosting area.
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