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 15 of 15 for “"Crystalline rock"”.
-
Dilatancy : further studies in crystalline rock
Thesis. 1975. Ph.D.--Massachusetts Institute of Technology. Dept. of Earth and Planetary Sciences.
-
Novel techniques for fracture monitoring in crystalline rock
… plays a significant role in the behavior of rock and structures during failure. Often times, fracture processes observed in the laboratory do not accurately represent what occurs in the field due to the effect that specimen size and loading conditions have on fracture properties, namely, …
-
Identification of Recharge Source Areas in a Fractured Crystalline-rock Aquifer in Ploemeur, France
… available groundwater resources within crystalline rocks is pertinent to understanding and predicting resources for ecosystems worldwide. Crystalline-rock aquifers, with favorable structure and climate, can be pumped year-round to meet local domestic demand. The Ploemeur hydrogeologic …
-
Radiative Transfer in the Martian Environment: In-Situ Results from the MSL Curiosity Rover and Laboratory Experimentation on Martian Regolith and Crystalline Rock Analogs
… angle for martian analog regoliths and crystalline rock samples. Materials show strong forward or isotropic scattering profiles through the samples. The transmission through the materials is assessed at ultraviolet and visible wavelengths. Kieserite and the majority of the rock samples …
-
A study of beef cattle in nine middle Virginia counties
… to the Piedmont Plateau. Soils are largely from crystalline rock and except for small areas of Davidson and Lloyd types, the soils are derived from acidic rock. The soils of this area are deficient in phosphorus but are fairly well supplied with potassium. In most cases lime and phosphate are the …
-
Physical Investigation of Field Scale Groundwater Recharge Processes in the Virginia Blue Ridge Physiographic Province
… and geophysical data collected at the Fractured Rock Research Site in Floyd County, Virginia indicate that recharge rates to the subsurface are controlled by a small scale thrust fault associated with regional thrust faulting within the Blue Ridge Province. Recharge rates appear to be correlated …
-
Evaluation of Spring Discharge for Characterization of Groundwater Flow in Fractured Rock Aquifers: A Case Study from the Blue Ridge Province, VA
… for use in other locations where fractured rock and crystalline rock aquifers are common.
-
A Numerical and Statistical Analysis of the Fractured Rock Aquifer System in Ploemeur, France to Quantify Local and Regional Recharge
… is compounded when considering a fractured rock aquifer system, where classification and modeling is complicated by highly complex structural geology. However, the ability to distinguish the character and geometry of fractured rock aquifers is indispensable for quantifying recharge to …
-
Continental Tectonics from Dense Array Seismic Imaging: Intraplate Seismicity in Virginia and a Steep Cratonic Margin in Idaho
… that the aftershock zone is confined to a single crystalline-rock terrane. The 1-2 km wide cloud of hypocenters is characterized by a 29° strike and 53° dip consistent with the focal mechanism of the main shock. A 5° bend along strike and a shallower dip angle below 6 km points toward a more …
-
The role of accessory minerals in inhibiting bentonite erosion in the geological disposal of higher activity radioactive waste
… cases for disposal of radioactive waste in crystalline rock. Currently, quantitative mass loss assessments are based on a 100% montmorillonite buffer and lead to unacceptable mass loss predictions. In practice however, the buffer will be comprised of ≈80% montmorillonite and ≈20% accessory …
-
Tills Underlying the Sediments of Glacial Lake Souris North-Central North Dakota
… provided percentages of fragments of certain rock types (crystalline, carbonate, sandstone and siltstone, shale, and lignite) in the very-coarse sand fraction of the till. The best parameters for characterizing the till were percent normalized silt (silt % / silt % + clay %) plotted against …
-
An Examination of Site Response in Columbia, South Carolina: Sensitivity of Site Response to "Rock" Input Motion and the Utility of Vs(30)
… deposits, overlying high velocity Paleozoic crystalline rock. An equivalent-linear algorithm is used to estimate site response for vertically incident shear waves in a horizontally layered Earth model. Non-linear mechanical behavior of the soils is analyzed using previously published …
-
The Midcontinent exposed: Precambrian basement topography, and fault-and-fold zones, within the cratonic platform of the United States
… The continent-wide contact between Precambrian crystalline rock and the overlying cover of Phanerozoic strata is known as the ""Great Unconformity."" Though the cratonic platform has been relatively stable, tectonically, for over a billion years, it has been affected by epeirogenic movements …
-
Thermomechanical analysis of rock asperity in fractures of enhanced geothermal systems
… wells. Injected water is heated by contact with rock and returns to the surface through production well. Fracture provides the primary conduit for fluid flow and heat transfer in natural rock. Fracture is propped by fracture roughness with varying heights which is called asperity. The stability …