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The AAPG/Datapages Combined Publications Database
West Texas Geological Society
Abstract
The Pennsylvanian-Permian Boundary in Shelf Areas of the North Platform of the Midland Basin
Abstract
Re-examination of available fusulinids in portions of the shelf sequence on the North Platform of the Midland Basin indicates that the Pennsylvanian-Permian boundary occurs lower than previously recognized. By these revised correlations, the Canyon-Cisco section is shown to comprise an erosionally-thinned sequence of carbonates and colluvium. The overlying Wolfcampian similarly includes a thick section of platform carbonates and colluvial deposits in Early to Middle Wolfcampian strata, the top of which had previously been referred to as the Middle Wolfcamp unconformity.
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