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Showing 1 to 20 of 138 for “"Rock Types"”.
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Improving Reservoir Simulation Models by Incorporating Rock Types
Defining of rock types for a reservoir has been proven to be helpful when creating a geological model. Lab investigation helps in providing data and conclusions which when combined with Petro-physical properties aids in planning for future design based on permeability, porosity and rock quality. …
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Temperature-dependent thermal transport properties of major Archean rock types and implications for the thermal evolution of Archean terranes
… Early continental crust was comprised of rock associations such granite-greenstone (GG) belts and intrusions of high heat-producing tonalite-trondhjemite-granodiorite (TTG), and the burial of TTG rocks below GG rocks is believed to have triggered dome-and-keel formation. The thermal …
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Upscaling Lithology and Porosity Types from Microscopic to Core Domain with Thin Section Petrography, Dual Energy CT, and Rock Types: Creation of Diagenesis and Porosity Type Logs
Upscaling Lithology and Porosity Types from the Microscope to the Core with Thin Section Petrography, Dual Energy CT, and Rock Types: Creation of Diagenesis and Porosity Type Logs Authors: Jacob M. Proctor, André W. Droxler, Naum Derzhi, Heath H. Hopson, Paul (Mitch) Harris, Pankaj Khanna, and …
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The petrogenesis and geochemistry of the dioritic complexes south of Balmoral forest, Angus
… (12 km squared) constitutes a wide range of rock types from olivine gabbro, through diorite to adamellite. The bulk (> 80%) of the succession consists of heterogeneous hornblende- and pyroxene-bearing diorites. Partially assimilated rafted metasedimentary xenoliths, are common in the …
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Sedimentology of the Mid-Visean limestones of the southern part of the Askrigg Block, North Yorkshire
… with profound unconformity on Lower Palaeozoic rocks, have been mapped across their entire outcrop area on the Askrigg Block. The sediments, comprising approximately half of the thickness of the Dinantian Great Scar Group, have been subdivided into four formations listed in ascending …
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Geology of igneous extrusive and intrusive rocks in the Sundance area, Crook County, Wyoming
<p>Two major igneous rock types occur in the Sundance, Wyoming area including foyaite of the Bear Lodge Mountain sill and quartz latite of Sundance Mountain and Sugarloaf Mountain. The igneous bodies were mapped on a scale of 1:5000 in an effort to determine petrogenetic relationships between the …
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Integrated geological and petrophysical investigation on carbonate rocks of the middle early to late early Canyon high frequency sequence in the Northern Platform area of the SACROC Unit
… study is an attempt to recognize carbonate rock types defined based on rock fabrics by integrating log and core based petrophysical analysis in high-frequency cycle (HFC) scale sequence stratigraphic framework and to improve our ability to understand static and dynamic petrophysical …
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Application of Pattern Recognition Techniques to Monitoring-While-Drilling on a Rotary Electric Blasthole Drill at an Open-Pit Coal Mine
… application of pattern recognition techniques to rock type recognition using monitoring-while-drilling data. The research is focused on data from a large electric blasthole drill operating in an open-pit coal mine. Pre-processing and normalization techniques are applied to minimize potential …
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The effect of zero point charge environment on rock fracture behavior
… charge (ZPC) environment on fracture behavior of rocks. The material parameters selected for this purpose were fracture toughness and specific work of fracture. These properties were determined for three rock types in five environments. Semi-circular bend specimens of dolomitic limestone, Sioux …
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Petrological and geochronological constraints on the metamorphic evolution of high-pressure granulites and eclogites of the Snowbird tectonic zone, Canada
… terrane of granulite facies mylonitic rocks along the trace of the Snowbird tectonic zone in northern Saskatchewan. This study focuses on the 400 km² Southern Domain of the EAmt, which contains a spectacular suite of high- pressure granulites and eclogites that have been metamorphosed …
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Ore breakage characterisation of UG2 deposits using the JK RBT
… can be compared across a database of different rock types. It thus develops a relationship between specific energy input and degree of breakage which can be applied to impact breakage in comminution devices. The present study is focussed on investigating the breakage properties of UG2 …
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THE PETROLOGY AND GEOCHEMISTRY OF HIGH CASCADE VOLCANICS IN SOUTHERN WASHINGTON: MOUNT ST. HELENS VOLCANO AND THE INDIAN HEAVEN BASALT FIELD (TRACE ELEMENT, ISOTOPES, MINERALOGY)
… Eruptive products include a wide spectrum of rock types including basaltic to andesitic lavas, andesitic to dacitic pyroclastic flows and tephra, and dacite domes. The major and trace element compositions of some andesites and dacites are broadly consistent with their derivation from a …
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Petrographic Analysis of an Early Cenozoic Breccia from the Tinton Area, Northern Black Hills, South Dakota
… Dakota, in an area of Precambrian metamorphic rocks, pegmatites, and Tertiary intrusives. The outcrops are fairly circular, the smaller measuring 150 meters and the larger measuring 400 meters. Located nearby is the Mineral Hill alkalic ring dike complex, with which this breccia is thought to …
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Heavy minerals of the Cretaceous Hell Creek and Paleocene Ludlow Formations of Slope and Bowman counties, North Dakota
… specifically studied to determine the source rock types and their provenance, and generally assess the diagenetic processes which affected the heavy minerals. </p><p> The heavy minerals include zircon, rutile, tourmaline, garnet, ilmenite, spinel, apatite, epidote, sphene, pyroxene, dolomite, …
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Stratigraphy, igneous petrology and evolution of the Sinclair Group in southern South West Africa
… been possible to postulate distinct parent magma types on the basis of major and trace element analyses carried out on sixty-seven samples from the Sinclair Group. The felsic rock-types can be differentiated into a relatively high-Ca group and a relatively low-Ca group, the latter being domi- …
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ΤΕΧΝΙΚΟΓΕΩΛΟΓΙΚΗ ΕΡΕΥΝΑ ΤΟΥ ΛΕΚΑΝΟΠΕΔΙΟΥ ΤΩΝ ΑΘΗΝΩΝ
… THE ATHENS BASIN EXAMINED. THE CHARACTER OF ROCKS AND SOILS INCLUDING THEIR DISTRIBUTION, PHYSICAL STATE AND THEIR PHYSICAL AND MECHANICAL PROPERTIES ARE ALSO DETERMINED. FOR THIS PURPOSE A LARGE NUMBER OF GEOTECHNICAL INFORMATION INCLUDING BOREHOLES AND TRIAL PITS OBTAINED MAINLY FROM KEDE …
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Membrane properties of intact rock cores of Burlington Limestone, Jefferson Dolomite, Darrington Phyllite, and low permeability concrete
… with other naturally occurring 'tight' rock types. Therefore, the objectives of this research was to perform a series of hyperfiltration experiments using actual rock discs of Quarry Ridge Jefferson Dolomite, Darrington Phyllite, Lower Burlington Limestone, and low permeability concrete …
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The geochemistry and geochronology of the barby formation in the sinclair area, Southern Namibia
Volcanic and sedimentary rocks of the Sinclair Supergroup occur in the Konkiep Terrane of Southern Namibia. Three volcanic and sedimentary cycles are recognised. The Barby Formation belongs to the second cycle which consists of the Kunjas. Formation, Barby Formation and the Guperas Formation. In …
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Processes of felsic melt migration through the mid-crust : evidence from field relations in the central zone of the Damara Belt, Namibia
… melt migration through subsolidus, mid-crustal rocks. Outcrops selected for detailed investigation are representative of a variety of mestasedimentary rock types and strain environments, and all contain pervasive and interconnected leucosome networks representative of melt movement through, and …
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Mineral equilibria constraints on open-system melting and consequences of melt loss in metabasic rocks
Metabasic rocks constitute a significant proportion of the rock types found within orogenic metamorphic terranes, and the high temperature (T), suprasolidus behaviour of these lithologies provide an important contribution to the process of internal differentiation in the continental crust. The …
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