Geology topics
Robert Lupe
Publications and source records attributed to Robert Lupe.
Preliminary stratigraphic sections of the Upper Triassic Chinle Formation, San Rafael Swell-Moab area, Utah
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Depositional environments as a guide to uranium mineralization in the Chinle Formation, San Rafael Swell, Utah
Uranium deposits in the San Rafael Swell are related to sedimentary depositional environments in the Upper Triassic Chinle Formation. The sedimentary textures resulting from depositional processes operating in low-energy environments appear to have influenced uranium mineralization. The Ohinle consists of three fining-upward, fluvial-lacustrine sequences. Uranium minerals are concentrated in the lower part of the lowest sequence in areas where sediments of low-energy environments are complexly interbedded with sediments of other environments. Areas favorable for uranium exploration exist in the subsurface to the north, west, and south of the Chinle outcrop in the Swell. This determination is based on the spatial distribution of depositional environments and the pattern of Chinle deposition through time.