Preliminary chart showing distribution of rock types, lithologic groups, and depositional environments for some Tertiary, Upper and Lower Cretaceous, and Upper and Middle Jurassic rocks in the subsurface between Altamont oil field and San Arroyo gas field, north-central to southeastern Uinta Basin, Utah

Sedimentology, mineralogy, palynology, and depositional history of some uppermost Cretaceous and lowermost Tertiary rocks along the Utah Book and Roan cliffs east of the Green River

“…The undifferentiated Tuscher and Farrer Formations and the Neslen Formation were also sampled from cores in the Natural Buttes (D6192) and Southman Canyon (D5929) fields in the Uinta basin. Preliminary results of studies of some of these and other outcrop samples are reported in Fouch and Cashion (1979) and Fouch and others (1983); the palynology of cores from the Natural Buttes field (sec. 15, T. 10 S., R. 22 E.) is discussed in Pitman, Anders, Fouch, and Nichols (1986) and Pitman, Franczyk, and Anders (1987).…”

“…In their measured sections, Fisher and others (1960) described a conglomerate and conglomeratic sandstone that at some locations is placed at the base of the Wasatch Formation but in other locations is included within the Tuscher Formation. Fouch and Cashion (1979) first referred to this conglomerate sequence as the "beds at Dark Canyon" in a subsurface cross section and, based on palynological data, assigned it a Paleocene age. Later it was referred to as the "conglomerate at Dark Canyon" (Keighin and Fouch, 1981) or the "conglomerate beds at Dark Canyon" (Fouch and others, 1983).…”

“…The progressive thinning and younging of the main body of the Wasatch Formation from west to east (Cashion, 1967;Fouch and Cashion, 1979;Fouch and others, 1983) The rock types, textures, sedimentary structures, and geometry of the Dark Canyon sequence indicate deposition on an extensive medial to distal, braided-river alluvial plain Figure 11. Structural elements and reconstructed drainage patterns in the Uinta basin and adjacent areas during deposition of the Dark Canyon sequence of the Wasatch Formation.…”

Cretaceous and Tertiary paleogeographic reconstructions for the Uinta-Piceance Basin Study Area, Colorado and Utah

“…Discontinuous sandstone bodies in this zone that are exposed in northeastern and eastern Utah, and less commonly in the western Piceance basin in northwestern Colorado, have been mapped with the Emery (Cullins, 1968;Russon, 1987;Clark, 1928). Their buried counterparts are grouped commonly with the Mancos B, an informal stratigraphic unit of subsurface usage (Fouch and Cashion, 1979;Kellogg, 1977;Cole, 1987) whose age, lithologic composition, stratigraphic contacts, and extent are not defined. In the study area, the Mancos B probably contains strata of early Campanian and Santonian age, including some rocks that are temporally equivalent to the uppermost part of the Emery Sandstone Member of the Mancos Shale exposed east of the Wasatch Plateau.…”

Upper Cretaceous and Paleogene sedimentary rocks and isotopic ages of Paleogene tuffs, Uinta basin, Utah. Ages of late Paleogene and Neogene tuffs and the beginning of rapid regional extension, eastern boundary of the Basin and Range Province near Salt Lake City, Utah

“…In the subsurface, however, three marker beds in the Green River Formation help correlate various sections: the carbonate marker unit, the middle marker, and the Mahogany oil shale bed (Ryder and others, 1976, p. 497). The lower two beds crop out on the surface south of the Salt Lake City quadrangle (Ryder and others, 1976, p. 497), and the Mahogany bed has been traced in the surface and subsurface throughout the Piceance and Uinta basins (Cashion, 1967;Cashion and Donnell, 1972;Fouch and Cashion, 1979;Fouch, 1981) and crops out in the southern part of the map area (plate 1).…”