... ABSTRACT In this study the elastic properties of crystalline rocks – amphibolites from different boreholes were studied. We studied the depth effect on the elastic properties of mineralogically quite homogenous rocks – amphibolites. The samples were taken from three different crustal levels...

... project is developed on the east limb of a southerly plunging anticline in this package of crystalline rocks (Lisenbee and Terry, 2009). The host rock for the test bed is the Yates Unit of the Poorman Formation, which is an amphibolite consisting of amphibole, plagioclase, and chlorite with minor amounts...

... of the hydraulic fracturing results. Reservoir Characterization amphibolite experiment Upstream Oil & Gas composition Artificial Intelligence sanford underground research facility pyrrhotite calcite carbonate Poorman Formation neural network kismet experiment dolomite geological...

... Abstract: The Sanford Underground Research Facility (SURF) has repurposed older workings of a long-lived gold mine to host scientific experiments. The present laboratories are developed primarily in Precambrian-age amphibolite host rock, but Tertiary-age rhyolite intrusives are also present...

... of the HQ core in most of the coring runs. The lithologies sampled by the cores included amphibolites, rhyolites, and phyllites. Approximately 60% of the recovered core were measured for acoustic velocities (Vp, Vs) and magnetic susceptibilities. The amphibolites had the highest acoustic velocities followed...

... Vegas, Los Angeles, and Phoenix. access shaft tunnel face canopy tube ground condition Reservoir Characterization intake excavation starter tunnel shotcrete support class support system amphibolite GSI value original starter tunnel tunnel alignment Lake Mead probe hole...

..., 1981b). MICROSTRUCTURES AND MINERAL CHEMISTRYMylonite zone (MZ) II LITHOLOGIES Lithologies affected by mylonitization in MZ II include quartzofeldspathic layered gneisses (with or without amphibole), rare pelites, metadiabase unit Md-4, and amphibolites interlayered with the migmatitic gneiss...