No description available.

This work describes a new taxonomy for elastic, sedimentary porous media. The taxonomy is synthesized for the investigation and characterization of ground-water flow from accumulating developments in the genetic analysis of elastic, sedimentary depositional structures. Genetic analysis recognizes spatial associations of elastic, sedimentary structures imposed during genesis. The taxonomy is a nested hierarchy of discrete elastic, sedimentary structures distinguished by the bounding surfaces created during their emplacement and rearrangement. The investigation and characterization of a specific ground-water flow system in elastic, sedimentary porous media can be improved by imposing a structural context on lithologie observations, geophysical measurements, head measurements, and hydraulic conductivity estimates. Globally-valid and transferable descriptions of structures in the taxonomy from modern exposures, outcrops, and densely sampled subsurface systems are modified to fit site-specific geologic observations and measurements. A specific procedure is developed for applying the taxonomy in the investigation and analysis of ground-water flow. The procedure quantitatively measures the hydraulic validity of alternative geologic interpretations of site-specific data under the taxonomy. The application of the taxonomy and procedure to a typical set of data types, densities, and quality is illustrated with data from a site of ground-water contamination investigation.

No description available.

Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1913. / The entire thesis text is included in file. Typescript. Some illustrations by author. Title from title screen of thesis/dissertation PDF file (viewed April 30, 2009) Includes bibliographical references.

The Late Cretaceous foreland basin in central Utah developed adjacent to the Cordilleran fold and thrust belt between Albian and latest Campanian time. Subsidence resulted from the lithospheric 'oad of coeval thrust sheets to the west. Compositional trends of foreland-basin sandstones record unroofing of stratigraphic sequences above ramp-style detachment thrusts until the middle Campanian, when folding above a frontal blind thrust system caused recycling of previously deposited foreland basin detritus. Basement uplifts within the foreland basin terminated subsidence in latest Campanian time. Thrust loading created a westward-thickening basin in which the sedimentary wedge fines eastward. Coarse-grained synorogenic strata along the western edge of the basin are included in the Indianola Group, which consists of a lower marine-dominated sequence and an upper fluvial sequence. The marine sequence correlates with the marine Mancos Shale farther east, while the upper fluvial sequence is equivalent to the Mesaverde Group. Individual lithostratigraphic units are time-transgressive, becoming younger eastward. Eight distinct depositional facies are recognized in the Indianola Group: alluvial fan conglomerate, braided fluvial conglomerate, braided fluvial pebbly sandstone, meanderbelt fluvial sandstone and siltstone, delta distributary sandstone, lagoonal sandstone, siltstone, and mudstone, nearshore marine sandstone, and open marine mudstone and siltstone. The Mesaverde Group was deposited mostly by sandy to pebbly braided and meandering rivers which transported detritus eastward from the thrust belt. Facies in the basin combine to form an offlapping sequence of eastward-fining clastic wedges. Sandstones of the basin are quartzarenites, sublitharenites, and litharenites derived from the sedimentary source terrane of the thrust belt. Detrital carbonate grains are an important fraction of the sedimentary rock fragments that dominate the lithic population of the sandstones. Feldspathic litharenites high in eastern exposures of the Mesaverde Group were derived from an arc terrane lying beyond the thrust belt. Linear petrographic trends shown by triangular QtFL and QpLsLv plots resulted from mixing of detritus from multiple sources. The age of synorogenic deposits and their succession by a Maastrichtian to Paleocene overlap assemblage indicate that foreland basin subsidence and major thrust faulting were continuous from late Albian through late Campanian time in central Utah.

No description available.

No description available.

Thesis (M.S.)--University of Wyoming, 2008. / Title from PDF title page (viewed on December 23, 2009). Includes bibliographical references (p. 119-127).

This study investigates the sedimenology and geochemistry of Permian glacial sediments cropping out in the Bacchus Marsh and Derrinal areas in central Victoria and in the subsurface beneath the Cainozoic Murray Basin in Victoria, New South Wales and South Australia. Facies analysis of the Bacchus Marsh Formation, based on a critical review of literature on glacial sedimentary processes and environments, identifies the following major facies groups: 1. Subglacial tillites deposited beneath wet-based ice. Some of these tillites exhibit structures indicative of a number of subglacial processes such as frictional lodgement of large clasts, subglacial bed deformation, subglacial meltwater flow and subglacial size sorting of clasts. Other subglacial tillites are essentially structureless. 2. Bedded diamictites to sandstones deposited predominantly by ice-rafting of debris into standing water. 3. Fluvial outwash sandstone and conglomorate facies that are finer-grained than typical proglacial outwash facies. 4. Deltas and subaqueous outwash fans vary from sandy sediments deposited by proglacial and subglacial streams to coarse, poorly sorted complexes deposited as debris aprons close to the ice front. Abundant underflow deposits suggest that less than normal marine salinities prevailed in these water bodies, even if they were arms of the sea. 5. Supraglacial tillites consisting of sandy diamictites to pebble conglomerates.

Thesis (M.S.)--University of Adelaide, Dept. of Geology and Geophysics, 1991. / Includes bibliographical references.