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.
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Showing 1 to 20 of 42 for “"sedimentary rock"”.
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Two-fluid flow in sedimentary rock : complexity, transport, and simulation
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1996.
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Structural geology and geochemistry of sedimentary rock-hosted gold in the eastern Nadaleen Trend, Yukon Territory, Canada
… Neoproterozoic carbonate and siliciclastic rocks that were subject to intense deformation prior to Au mineralization. Intense deformation in the region resulted from mid-Cretaceous NNE-vergent, thin-skinned fold-thrust deformation. Structures within a 6 km2 area at the eastern Nadaleen Trend …
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The igneous petrology, thermal history, and genesis of sedimentary rock-hosted Au deposits in the northern Battle Mountain mining district, Nevada
… and distal disseminated deposits, as well as sedimentary-rock hosted Au deposits of uncertain origin. This dissertation examines the ages of magmatism and mineralization in the Battle Mountain mining district, the characteristics of hypogene sedimentary rock-hosted Au mineralization at the …
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Apparent Stress Estimates of Seismic Events Associated with Underground Mining Operations in Sedimentary Rock Units: Implications for Improving Underground Roof Collapse Warning Systems
We analyze recordings of seismic events induced by underground mining operations at the Moonee Colliery, located in Australia, and at the Springfield Pike Limestone Quarry, located in the United States. The data were recorded underground in the vicinity of active mining operations and were …
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Modeling joint patterns using combinations of mechanical and probabilistic concepts
Rock fracture pattern description is important in civil engineering, engineering geology, and petroleum engineering. Deformability, strength, and stability of a rock mass as well as fluid flow through it are all influenced by fractures. Rock fracture patterns normally cannot be observed completely …
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Seismic imaging and thermal modeling of active continental rifting processes in the Salton Trough, Southern California
… the high heat flow and geothermal activity. Meta-sedimentary rock extends to at least 7-8 km depth. A 4-5 km thick layer in the middle crust is either additional meta-sedimentary rock or stretched pre-existing continental crust. The lowermost 4-5 km of the crust is rift-related mafic magmatic …
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Characterization of clasts in the Glen Torridon region of Gale crater observed by the Mars Science Laboratory Curiosity Rover
… clast types were identified, all of which are sedimentary rock and can be linked to local bedrock, suggesting short transport distances. Several clast types exhibit signs of eolian abrasion, such as facets, pits, flutes and grooves. These results indicate that clasts are the products of bedrock …
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Geomechanical and tectonic investigations into the geologic history of Mars at local, regional, and global scales
… scale, I determine the physical properties of a sedimentary rock unit at Meridiani Planum by utilizing data collected in situ by the Mars Exploration Rover Opportunity. The geological engineering technique of rock mass rating (RMR) was used to characterize the strength and deformability of a …
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Microporomechanical modeling of shale
Shale, a common type of sedimentary rock of significance to petroleum and reservoir engineering, has recently emerged as a crucial component in the design of sustainable carbon and nuclear waste storage solutions and as a prolific natural gas source. Despite its importance, the highly heterogeneous …
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Sedimentary and petrologic analysis of the Mississippian Price Formation at Sherwood Lake, West Virginia
… High percentages of schist and phyllite rock fragments within the upper-delta-plain facies indicate that the parent material for the Price in southern West Virginia was dominantly metamorphic. Percentages of rock fragments change systematically down the regional slope; upper-delta-plain …
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Assessing the mechanical microstructure of shale by nanoindentation : the link between mineral composition and mechanical properties
Shale is a multi-phase, multi-scale sedimentary rock that makes up 75% of the earth's sedimentary basins and is especially critical in petroleum engineering applications. At macroscopic scales, shales possess a diverse set of possible compositions, resulting in a diverse set of mechanical …
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Geology of part of the Inchelium Quadrangle, Stevens County, Washington
… the stratigraphic units in the miogeosynclinal rocks so that the details of their structure can be better understood. The following lithologic units are recognized: Addy Quartzite (Early Cambrian), Maitlen Phyllite (Early Cambrian), Metaline Limestone (Middle Cambrian), Ledbetter Slate (Middle …
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Subsurface structural geology of the eastern part of the Büyük Menderes Graben, western Turkey: implications for structural evolution of the Büyük Menderes and Alasehir Grabens
… meters (m) thickness of Early Miocene to recent sedimentary rock units in the BMG. The south-dipping Graben Bounding Fault (GBF) along the northern margin of the BMG has been active probably since Miocene sedimentation in the basin. Miocene to Pliocene (Neogene) sedimentary units show thickness …
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Organic matter preserved in modern ooids from Shark Bay and the Bahamas
… grains - are an important component of the sedimentary rock record, yet many details of their formation are not well understood. In particular, the role of microorganisms and organic matter is controversial. To learn about the geochemical and biological environment in which ooids form, …
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Sedimentology, petrology, and structure of the Moffet Creek Formation, Eastern Klamath Mountains, Northern California
… two petrofacies; one rich in metamorphic rock fragments (Lm) and one rich in sedimentary rock fragments (Ls). Provenance discrimination diagrams indicate that the Lm-rich petrofacies was derived from a crystalline cratonic source, whereas the Ls-rich petrofacies was derived principally …
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Framework Grain Composition and Texture of the Wedington Sandstone Member, Fayetteville Shale, as a Provenance and Sediment Dispersal Indicator for Clastic Depositional Systems Across the Northern Arkansas Structural Platform During the Late Mississippian
… for 0.0% to 9.5% of grains and were mostly sedimentary rock fragments. Feldspar grains were exclusively alkali feldspars and account for 0% to 1.4% of framework grains. The Wedington delta complex had a northwest to southeast sediment dispersal vector which is similar to the one proposed for …
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Compositional and textural analysis of host-rock diamictite matrix at the Kakula copper deposit, Democratic Republic of Congo
The Kakula deposit is a high-grade sedimentary-rock-hosted Cu deposit (628 Mt, 2.72% Cu indicated resource, 1% cut-off) ~10 km south of the Kamoa deposit (759 Mt, 2.57% Cu indicated resource, 1% cut-off) in the central African copperbelt, Democratic Republic of Congo. Copper-sulphide ore …
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EVALUATION OF BEDROCK DEPTH AND SOIL INFILTRATION ALONG PENNYPACK CREEK USING ELECTRICAL RESISTIVITY TOMOGRAPHY AND MOISTURE LOGGERS
… processes, such as soil characteristics, bedrock depth, and land use, the quality and accuracy of models can be improved. The goal of this study was to use soil moisture loggers and electrical resistivity tomography (ERT) along the Pennypack Creek (Philadelphia, PA) to evaluate soil …
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