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1. Facies Heterogeneity and Petrography of the Downdip Evaporitic Wedge in the Akah Interval of the Pennsylvannian Paradox Basin

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This outcrop-based research compares and contrasts the facies associations of downdip evaporitic wedges of the late Carboniferous Akah interval (Moscovian) along the east and west margins of the Paradox basin in southwestern Colorado and southeastern Utah. These wedges contain shallow marine carbonates, organic-rich dolomites and evaporites which were deposited along the margin of a temporarily restricted, rapidly subsiding basin subject to episodic...

2. Sequence Stratigraphic Interpretation of the Pennsylvanian Hermosa Group in Rico, Colorado

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A detailed measured section and sequence stratigraphic interpretation of the Pennsylvanian (Moscovian) Hermosa Formation on Sandstone Mountain near Rico Colorado, reveals 19 unconformity-bounded sequences, nested within 3-5 sequence sets. Measuring 286 m thick, the section provides the closest surface location to examine the updip facies equivalent to the prodeltaic shales that host recent shale gas plays in the adjacent basin. Here we present a...
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