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Showing 1 to 20 of 29 for “"structural controls"”.
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Structural Controls of the San Emidio Geothermal System, Northwestern Nevada
… insight into the kinematics, stress state, and structural controls of the San Emidio geothermal system. San Emidio lies within the Basin and Range province of northwestern Nevada, ~100 km north-northeast of Reno. The San Emidio area is dominated by middle to late Miocene Pyramid sequence …
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Structural controls and diagenetic conditions associated with fluid migration on the Moab Fault, UT
… observations, new insight is gained into the structural context, thermal and diagenetic conditions, and source fluids associated with cementation and vein formation along the fault zone. In particular, clumped isotope thermometry is used to directly estimate the formation temperature of …
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Structural controls on the mineralization of El Arco copper deposit, Baja California Norte, Mexico
Includes bibliographical references (pages 96-98).
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Tidal and Structural Controls on Seismic Events Near the Grounding Line at Beardmore Glacier, Antarctica
Here I report seismic events occurring over a three-week period during the 2013-2014 austral summer near the grounding line of Beardmore Glacier, Antarctica. The ~24000 events over this time frame had a noticeable temporal pattern that correlates well with the principally diurnal tides of …
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Structural Controls of the Black Warrior Blind Geothermal System, Washoe-Churchill Counties, Truckee Range, Nevada, USA
… circa 2011. The thermal anomaly resides in a structurally complex zone that has not been previously characterized. Detailed geologic mapping in the area has identified faults and stratigraphic relationships between successive and interfingering Tertiary volcanic sequences that nonconformably …
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Polyphase deformation and the structural controls on economic gold occurences within the Bendigo gold field, central Victoria, Australia
… Australia, and is a classic example of a structurally controlled turbidite-hosted gold deposit. Since 1993, Bendigo Mining Ltd. has been re-evaluating part of the goldfield and is in the process of developing an underground mine. The current development, which accesses eight auriferous …
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Crustal, Thermal, and Structural Controls on Hydrocarbon Systems in the Delaware Basin, West Texas, and Southeastern New Mexico
… Chapter 2 uses gravity and magnetic data and structural mapping based on the stratigraphic correlation of 27 horizons using 11,433 formation top picks from 1,181 wells constrained by pre-stack depth migrated (PSDM) 3D seismic interpretation to address the influence of Proterozoic basement on …
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Multiple data set integration and GIS techniques used to investigate linear structural controls in the southern Powder River Basin, Wyoming
Lineaments in the Powder River Basin were mapped and categorized from Landsat TM imagery, a Digital Elevation Model (30 m), and Digital Line Graph (DLG) hydrology files. A GIS program was written using DLG information to eliminate those lineaments that were within 20° of roads and railroads. …
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Lithostratigraphic and structural controls of uranium mineralization in the Kiggavik East Zone, Centre Zone, and Main Zone deposits, Thelon Basin, Nunavut
… study documents the lithostratigraphic and structural character of Kiggavik’s basement rocks and their controls on the uranium deposits. Field investigation, coupled with structural analysis, geochemistry and geochronology indicates that the basement rocks comprise two main …
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Structural Controls of the MacFarlane Geothermal System, Humboldt County, Nevada: New Insights Based on Detailed Geologic Mapping, Shallow Temperature Surveys, and Magnetic Data
Detailed geologic mapping, structural analysis, magnetic and two-meter temperature data, integrated with previous datasets, constrain the structural controls of the MacFarlane geothermal system. MacFarlane hot springs and the travertine fissure ridges lie within a relay ramp. The relay ramp is …
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AN INVESTIGATION OF HYDROGEOLOGIC, STRATIGRAPHIC, AND STRUCTURAL CONTROLS ON ACER GRANDIDENTATUM COMMUNITIES IN A KARST LANDSCAPE, OWL MOUNTAIN PROVINCE, FORT HOOD MILITARY INSTALLATION, TEXAS
… investigates thelithologic, stratigraphic, and structural controls on the hydrologic, hydrogeologic, and geomorphologic evolution of the Owl Mountain Province as expressed by mesic vegetation communities, including Pleistocene relicts <em>Acer grandidentatum</em>, within karst terrains. These …
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The stratigraphic and structural controls on copper-gold mineralization at Cassenha hill prospect, within the Archean to Paleoproterozoic Angolan shield, Congo craton, South Western Angola
The Cassenha Hill copper-gold prospect is situated in the Catabola area, Huambo Province, southwestern Angola. Geologically, the prospect is part of the Angolan Central Eburnean Zone (CEZ) and consists of Paleoproterozoic metasedimentary rock sequences which have been intruded by Eburnean …
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Soil Structure and Organic Matter Dynamics: Influence of Tillage and Soil Physical Properties
Understanding structural controls over soil organic carbon (SOC) dynamics might improve our ability to predict inconsistent tillage influences on SOC sequestration. This research investigated the influence of soil structure on SOC mineralization and SOC fraction dynamics. A laboratory incubation …
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The geology and geochemistry of the Lumwana Basement hosted copper-cobalt (uranium) deposits, NW Zambia
… Ore Schist. The transitional contacts and structural controls on mineralization has led to the hypothesis that these deposits represent metasomatically altered, mineralized and sheared basement, rather than mineralized neo-Proterozoic sediments with amphibolite grade metamorphism. This …
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Influência da Zona de Fratura Romanche na evolução tectono-sedimentar do setor central da Margem Equatorial Brasileira
… configuration of the margin, marked by distinct structural segmentations, underscores the fundamental role of fracture zones in the genesis and development of basins along the Brazilian Equatorial Margin. The results presented contribute to a better understanding of the structural controls on …
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Pyrite geochemistry across the Betze-Post deposit, northern Carlin Trend, Nevada
… statistical analyses show that stratigraphy and structural controls promoted ore stage fluid flow. For example, ore stage pyrites occur within brecciated rocks and small-scale fractures within the Wispy Member of the Popovich Formation. Ore stage pyrites have trace element signatures that suggest …
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Hydrogeology of the Penoyer Valley region, Central Nevada
… associated with Tertiary extension serve as structural controls located along the western and eastern flanks of the Worthington Mountains, and along the western, eastern, southern and northern flanks of the Timpahute Range. Range bounding faults may channel groundwater along the strike of the …
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Identification, Mapping, Analysis, and Dating of Composite Mega Landslides in the Colorado Plateau
… share multiple commonalities. Stratigraphic and structural controls tend to dictate where the slides occur. All of the landslides occur where carbonates and/or sandstones overlie over consolidated shales. The shales are susceptible to creep and strain softening where lateral confinement has been …
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Tracking retreat processes at the Falljökull Glacier, SE Iceland
… to determine the climatic, hydrological and structural controls on glacier dynamics. The results show that melt production at Falljökull is closely linked to energy inputs to the glacier surface, although consistent thinning underestimation by the EBM, equivalent to ~1-3 m, reflects the poor …
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Improving Deep Exploration with Cost-Effective Geophysical Methods
… NB. Evaluating this model showed a need for structural controls to better understand the genesis of the deposit. A lesser-known geophysical system, Extremely Low Frequency EM (ELF-EM), measures ~2km deep and can produce conductivity models. While perfect for Nash Creek, ELF lacked modern …
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