Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 13 of 13 for “"storm-dominated"”.
-
Storm-dominated Lower Cambrian depositional environments in the Ravenswood area, Lander County, Nevada
… intermediate, distal), patch reefs, and storm-surge ebb channels; The lithology, paleontology, and sedimentary structures reflect deposition in a wave-dominated or storm-dominated system. Paleocurrent indicators suggest that strong westerly (present orientation of continent) winds created …
-
Thin-bedded Facies Analysis of a Ferron Storm-dominated Delta Front and Prodelta: Cretaceous Ferron Sandstone, Utah
… in central Utah. Thin beds may be the result of storms (tempestites), ignitive turbidity currents, or hyperpycnal flows. This study quantitatively evaluates the proportion of each facies types within heterolithic strata at the base of the sandier lithofacies to better characterize the relative …
-
High resolution sedimentologic and stratigraphic investigation of a storm-dominated carbonate ramp, Hoogland Platform (ca. 549 Ma), Nama Group, Namibia
… overall carbonate ramp platform morphology in a storm-dominated foreland basin setting. It was found that a generalized suite or class of physical processes that act to restore the seafloor to a relatively flat state by sweeping sediment from the highs and deposit in the lows does not allow for …
-
Storm-dominated shelf sedimentation marginal to a delta: an example from the Devonian of southwestern Virginia and eastern West Virginia
… are the result of extremely large but infrequent storm events and are surrounded by fair-weather deposits of mud rock. The Chemung shelf is envisaged as a very low-gradient (<0.5 ft./mile) clastic ramp extending hundreds of miles toward the craton interior. Transport of sand from the nearshore …
-
Microfacies Analysis, Sedimentary Petrology, and Reservoir Characterization of the Sinbad Limestone Based Upon Surface Exposures in the San Rafael Swell, Utah
… comprises three facies associations: (A) a basal storm-dominated, well-circulated skeletal-oolitic-peloidal limestone association, (B) a storm-dominated, poorly-circulated hummocky cross-stratified siliciclastic/peloidal association, and (C) a capping peritidal cross-bedded oolitic dolograinstone …
-
Palaeoenvironments and position of the Precambrian–Cambrian boundary within the lower Vanrhynsdorp Group of South Africa: sedimentary facies analysis, U-Pb series zircon geochronology and micropalaeontology
… suggest a dominantly shallow marine, partly storm-dominated depositional environment for the lowermost units as opposed to the previous interpretations of dominantly alluvial settings. Because of the global importance of the Ediacaran-Cambrian transition for diversification of marine biota in …
-
Correlation and Paleoenvironments above West T9.3 Tuff, Pisco Formation, Peru
… show a transition from offshore to wave and storm dominated middle to upper shoreface. The sandstone is interpreted as a shoreface bar through lateral comparisons of unit thickness. Muddy siltstones and very fine-grained sandstones were reworked by waves and currents and hosted abundant …
-
Facies analysis of three members of the Scarborough Formation (Middle Jurassic : Lower Bajocian) in the Cleveland Basin, northeast England : Blea Wyke, Byland Limestone and Crinoid grit members
… included subtidal shoals, laterally extensive storm-emplaced sand blankets, and a classic delta-destructive sheet sand formed through the landward translation of a low-profile barrier bar.Under sustained rate-of-subsidence controlled marine transgression, clastic input to the Blea Wyke Member …
-
Regional stratigraphic framework of the Tuscarora Sandstone: A model for geologic CO2 storage in West Virginia
… is generally a dark-gray shale deposited in a storm-dominated offshore marine environment in the west and deposited in a muddy embayment to the northeast. Finally, the upper member is fine- to coarse-grained and locally conglomeratic, and interpreted as stacked fluvial sandstone beds in the …
-
The Quaternary geological evolution of the Belgian Continental Shelf, southern North Sea
… over former tidal flat deposits, coastal storm-dominated banks formed (U5). These coastal banks were partly eroded when the barrier stabilised and started prograding seaward again, in reaction to the slowing down in the Holocene relative sea-level rise. The tidal flat area behind the …
-
Deposition, stratigraphy, provenance, and reservoir characterization of carbonate mudstones: the Three Forks Formation, Williston Basin
… lithofacies include the following. Schizohaline, storm dominated intrashelf deposits defined by disturbed claystone, dolomudstone, sandstone, laminated mudstone, and distorted to brecciated dolomudstone lithofacies. These lithofacies often contain syneresis cracks, desiccation cracks, high …
-
Taphonomy and Palaeoecology of multi-element skeleton invertebrates: a genetic model for exceptional preservation
… currents(hyperpycnal flows) generated by a flood-dominated fluvio-deltaic system entering in lagoonal or protected shallow marine settings. Two taphofacies are recorded: tf1 consists of a high density of articulated remains, which constantly show convex down orientation, while tf2 consists …
-
Nearshore and inner shelf sedimentation on the east Coromandel coast, New Zealand
… of inner shelf sedimentation processes in 'storm-dominated' shelf environments. Surficial sedimentation patterns have been examined by a variety of methods, including: the use of sea-bed drifters and Aanderaa current meters to determine the shelf hydrodynamics; the collection of 563 samples …