Donald E. Owen, 1991. "Large-Scale Sequence Stratigraphy of the Phanerozoic of the San Juan Mountain Region, Colorado", Sequence Stratigraphy Applications to Shelf Sandstone Reservoirs: Outcrop to Subsurface Examples, J. C. Van Wagoner, C. R. Jones, D. R. Taylor, D. Nummedal, D. C. Jennette, G. W. Riley
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The Sauk, Kaskaskia, Absaroka, Zuni, and Tejas Sloss sequences are all represented in the San Juan Mountain region, Colorado, but the Tippecanoe sequence is absent. The tectonic setting changed from cratonic bounded by a passive margin to the west during the pre-Pennsylvanian Paleozoic to active with orogenic periods related to the Gondwana collision during the Pennsylvanian and later orogenic periods related to subduction and thrusting to the west during the Mesozoic and early Cenozoic. Sedimentation also changed from thin, carbonates and mature elastics in sub-Pennsylvanian strata to thick, more immature clastics in super-Mississippian strata. Small-scale sequences are also present, but mostly await additional investigation for recognition.