Abstract
ABSTRACT Upper Triassic non-marine sandstones and shales of the Dockum Group occupy a widespread area in west Texas. The source area(s) for these beds has been a subject of varied opinion. Dip directions of foreset beds within the commonly cross-bedded sandstones were studied at 108 outcrops scattered throughout 7 counties in order to determine the direction of regional paleocurrents. Results show a predominance of dips to the northwest and west. The inferred source areas lie mainly to the southeast and east of the depositional area. The Llano Uplift region of central Texas, lying to the southeast of the area studied, was a major contributor of sediments during Late Triassic time.
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