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...