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Showing 1 to 13 of 13 for “"red beds"”.
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Magnetic records from latest Triassic to earliest Jurassic red beds, Utah and Arizona, and from mid-Pleistocene lake beds, New Mexico
… 0.78, is record in Moenave Formation strata compared to observation from coeval Newark Basin strata. The new paleomagnetic pole position for North America, corrected for inclination error and 4° of clockwise Colorado Plateau rotation is located at 62.3° N, 68.0° E (A95 = 7.4°, N = 102). Pole …
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Preservation Potential of Permian Gypsum Beds, Nippewalla Group, USA
… environment, as evidenced by the extensive red-beds and evaporites of the Nippewalla Group. Due to the fact that animals could not live in much of this extreme environment, there is a lack of a traditional fossil record in these units. Thus, this study focuses on detecting biomarkers, the …
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High resolution sequence stratigraphy of late Mississippian carbonates in the Appalachian Basin
… The sequences (a few meters to over a hundred meters thick) consist of eolianites, lagoonal carbonate muds, ooid shoals, and skeletal banks, and open marine skeletal wackestone and basinal marion the ramp-slope and basin margin. Sequence boundaries are at the top of prograding red-beds, …
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Petrology and petrography of samples from two Algoa Basin cores
… The Kirkwood Formation sediments are typically red shales interbedded with drab, fine sandstones (wackes) while the Sundays River Formation is typically drab fine to very fine silty sandstones and gray shales of a marine delta environment. Grain size analyses utilizing wet sieving and pippeting …
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Descrição osteológica do crânio de um novo dinossauro Prosauropoda do Neotriássico do sul do Brasil
ln 1998 a prosauropod skeleton was recovered from the continental Triassic red beds of the Caturrita Formation (Norian), southem Brazil. The specimen (UFSM 11069), housed in the Paleontological Collection of the Universidade Federal de Santa Maria, was coUected in the locality Água Negra, situated …
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Sedimentology of the Penrith sandstone and brockrams (Permo-Triassic) of Cumbria, north-west England
… (breccio-conglomerates) are continental red-beds of Lower Permian and Permo-Triassic ages respectively. The brockrams are predominantly the deposits of coalescing alluvial fans which accumulated as the products of subaerial sheetflood, transitional debris flow and braided river processes …
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Remote Sensing of Hydrocarbon-induced Rock Alterations at Cement Field, Oklahoma
… including mineralogical changes, bleaching of red beds, and clay mineral alterations. Surficial expressions of such alterations are distinct from adjacent rocks, and could be detected by remote sensing techniques. The Cement field is a giant oil and gas field located in the southeastern …
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State-Wide Sequence Framework of Mixed Carbonate-Siliciclastic Ramp Reservoirs: Mississippian Big Lime, West Virginia, USA
… meters (300 feet) thick. They consist of updip red beds and eolianites, lagoonal muddy carbonates, ooid grainstone and skeletal grainstone-packstone shoal complexes, deeper ramp and slope wackestone-mudstone, and laminated argillaceous lime mudstone. Maximum flooding surfaces on the ramp slope …
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The Auborus Formation of the Bethanie district, South West Africa
… movements in the central section folded the beds of the whole succession in the west into vertical and overturned positions. Block faulting that followed had a meridional trend and elevated this central section. Roughly north-trending faulting has displaced the contact in the south-east, and …
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UNDERSTANDING BLOCK ROTATION ALONG STRIKE-SLIP FAULT ZONES IN YUNNAN (CHINA): PALEOMAGNETIC AND STRUCTURAL APPROACH
… (Cina): la faglia Gaoligong e la faglia del Red River. Durante il primo anno, sono stati campionati 50 siti (per un totale di 503 campioni) a distanze variabili (fino a ca.25 km) dalle miloniti affioranti lungo la zona di taglio Gaoligong. I red beds di età Giurassico-Cretaceo, registrano …
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Stratigraphy of the clastic Silurian rocks of central western Virginia and adjacent West Virginia
… fine-grained sandstone with few interbeds of gray shale. Some vertically burrowed red beds occur in southeastern localities. This is a newly defined unit that takes the place of the "Keefer" Sandstone of southwestern Virginia and intertongues with the Mifflintown Formation containing …
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Characterising alluvial architecture using physical models, subsurface data and field analogues
… and within channel-belt scales. The prediction of inter-well alluvial architecture in the continental Barren Red Beds of the Upper Carboniferous, Lower Ketch Member, Southern North Sea, UK, presents difficulties. Subsurface data from the Tyne Field is subdivided into coarse-grained …
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Pan-African magmatism and regional tectonics of South Brazil
… separated by a Triassic basin with flat lying red beds and interbedded andesites and rhyolites. The Santana Metamorphic Belt is a NW-verging fold belt with a metamorphosed shelf sequence of quartzites, marbles and graphitic schists and a polydeformed Lower Proterozic gneissic basement deformed …