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Hessian (Leonardian, Middle Lower Permian) Depositional Sequences And Their Fusulinid Zones, West Texas, Charles A. Ross, June R. P. Ross
Hessian (Leonardian, Middle Lower Permian) Depositional Sequences And Their Fusulinid Zones, West Texas, Charles A. Ross, June R. P. Ross
Geology Faculty Publications
The lower Leonardian (Lower Permian) Hess Limestone in the eastern part of the Glass Mountains, West Texas, forms a high, well-exposed escarpment of repetitious, shallow-water, platform limestone facies for about 35 km. The strike of the outcrops cuts the strike of depositional facies at relatively low angle so that the actual width of the carbonate platform, from its marginal rim to shore facies, was probably less than 10 km (Figs. 1, 2). At the platform margin, the Hess Limestone passes abruptly into coarse, conglomeratic slope deposits that form the Skinner Ranch Formation. The pebbles, cobbles, boulders, (some the size of …
Nealian And Lenoxian (Wolfcampian, Lower Permian) Depositional Sequences, Fusulinid Facies And Biostratigraphy, Glass Mountains, Texas, Charles A. Ross, June R. P. Ross
Nealian And Lenoxian (Wolfcampian, Lower Permian) Depositional Sequences, Fusulinid Facies And Biostratigraphy, Glass Mountains, Texas, Charles A. Ross, June R. P. Ross
Geology Faculty Publications
The Wolfcampian Series crops out along the base of the Glass Mountains escarpment (King, 1930, 1937) and, in the western part of the Marathon Basin, in folded and faulted beds exposed in the Dugout structural fold belt, the westernmost belt in the Marathon Orogen (Ross, 1963). The Wolfcampian is divided into two stages, a lower Nealian Stage and an upper Lenoxian Stage (Ross and Ross, 1987a, 1987b). Strata of these two stages are separated by a major tectonic event in the history of the Marathon orogeny and, as a result, by a major angular unconformity that separates the structurally deformed …