Morrison Formation - Wikipedia Geological Society of America Special Papers. Brushy Basin Member of Morrison Formation (Jurassic). Newell, Dennis Lowell, 1997, Geology of the Brushy Basin Member of the Morrison Formation, Fruita Paleontological Resource Area, Colorado: Colorado State University, Fort Collins, CO, masters thesis. Uranium deposits in the Salt Wash Member of the Morrison Formation in the Carrizo Mountains area are closely related to depositional facies. [PDF] Conglomeratic Sandstone Strata At The Base Of The Brushy Basin M The 15 fission track ages obtained there from the Brushy Basin Member suggested that the lower two-thirds of this member were about 140 f 10 Ma and probably uppermost Jurassic, but possibly Lower Cretaceous, depending on the time scale used. The Windy Hill Member consists predominantly of marine sandstone and is only present as far south as northern Utah and northern Colorado. Utah. PDF 9 Stratigraphy and The Base of The Jurassic Morrison Formation in ... abundant Allosaurus America Amphicoelias associated beds Black bones Brushy Basin Member Bulletin Callison carbonate Carpenter caudal Ceratosaurus channel clay clay change clay minerals collected Colorado consistent contains crevasse splay . They added, "The ' Sequence of authorship alphabetical. Sedimentary rocks exposed in Gale Crater consist of similar non-acidic clays, possibly of lacustrine origin. The record of volcanism in the Brushy Basin Member of the Morrison Formation: Implications for the Late Jurassic of western North America. The 85-m Brushy Basin Member of the Morri-son Formation in western Colorado is dominated by a 30-m lower division (lower Brushy Basin Member (Jmbl)) mostly
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