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Showing 1 to 20 of 147 for “"fault zone"”.
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Modeling dynamic ruptures with high resolution fault zone physics
… first introduce the investigation of a complex fault zone structure and its effect on earthquake dynamic rupture mode transition. We show, for the first time, that the existence of soft inclusions off the fault plane may promote supershear transition under low prestress conditions. Secondly, we …
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New Constraints on Fault-Zone Structure from Seismic Guided Waves
The structure of fault zones (FZs) plays an important role in understanding fault mechanics, earthquake rupture and seismic hazards. Fault zone seismic guided waves (GW) carry important information about internal structure of the low-velocity fault damage zone. Numerical modeling of observed FZGWs …
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Structural framework of the Fries fault zone south of Riner, Virginia
The Fries fault zone south of Riner, Virginia is marked by a ductile, greenschist-facies thrust that places Middle Proterozoic gneiss over deformed Late Proterozoic(?)—Early Paleozoic rocks of the western Blue Ridge province. This work presents an analysis of the field relationships and finite …
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In Situ Compressional Wave Velocity Across An Exposed Brittle Fault Zone
The effects of lithology, fracturing, and gouge zone mineralization on the geophysical properties of fault zones are not very well understood. In situ seismic data collected over the exhumed San Gregorio Fault at Moss Beach, CA were used to relate in situ compressional wave velocity to internal …
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Considering a Seismically Active Leech River Valley Fault Zone in Southwestern British Columbia
The transpressional reverse Leech River fault (LRF) extends across the southern tip of Vancouver Island and beneath the city of Victoria, British Columbia, Canada. New paleoseismic studies suggest at least three surface-rupturing earthquakes have exceeded a moment magnitude (M) of 6 within a …
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Combined structural and magnetotelluric investigation across the West Fault Zone in northern Chile
… zur internen Architektur von großen Störungszonen beschränken sich üblicherweise auf die, an der Erdoberfläche aufgeschlossene, störungsbezogene Deformation. Eine Methode, die es ermöglicht, Informationen über die Tiefenfortsetzung einer Störung zu erhalten, ist die Abbildung der elektrischen …
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Correlation of seismic reflection data with seismicity over the Ramapo, New Jersey, fault zone
… explanation for seismicity in the Ramapo fault area. Seven reflection seismic lines were processed using variations in sorting and residual statics. Single VIBROSEIS sweeps were treated as separate sourcepoints. Compressional velocities and densities were determined in the laboratory. …
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Relationship Between Fault Zone Architecture and Groundwater Compartmentalization in the East Tintic Mining District, Utah
The Eureka Lilly fault zone provides an impermeable barrier for groundwater flow in the East Tintic mining district. The fault zone separates two distinct groundwaters that have different temperatures, compositions, and potentiometric surfaces. The damage zone of the fault is an extensive network …
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Interpretation of refraction and reflection stack data over the Brevard fault zone in South Carolina
Near surface structures across the Brevard fault zone are studied using the refraction and reflection arrivals recovered from the Appalachian Ultradeep Core Hole (ADCOH) regional seismic Line 1. In using refracted arrivals, a new processing approach is introduced that translates refracted first …
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Fracture networks and fault zone features in a deep water sandstone, Brushy Canyon formation, West Texas
Includes bibliographical references (pages 208-225).
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A structural and geochemical traverse across the NW outcrop of the Colenso Fault Zone, Saldanha, South Africa
The Colenso Fault Zone marks the boundary between the Tygerberg and Swartland Terranes in the Pan-African Saldania Orogenic Belt. The fault zone comprises several discrete shear discontinuities that in places cross-cut relatively undeformed granites of the Cape Granite Suite. It is NW-SE striking, …
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Investigating the Timing of initial Louann Salt Flow and Its Relationship with the Gilbertown Fault Zone, Southwest Alabama
… terminus of the salt is a system of peripheral faults, including the Gilbertown Fault Zone bordering the Mississippi Interior Salt Basin to the north and east. This study sought to constrain the timing of fault movement and determine its relationship to the baswinward evacuation of Louann Salt …
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Time-dependent occurrence rates of large earthquakes in the Dead Sea fault zone and applications to probabilistic seismic hazard assessments
… hohe seismische Aktivität der Tote-Meer-Störungszone (Dead Sea Fault Zone - DSFZ) ist mit einem hohen Gefahrenpotential verbunden, welches zu einem erheblichen Erdbebenrisiko für die Ballungszentren in den Ländern Syrien, Libanon, Palästina, Jordanien und Israel führt. Eine Vielzahl massiver, …
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Mapping and Kinematic Structural Analysis of the Deep Creek Fault Zone, South Flank of the Uinta Mountains, Near Vernal, Utah
… of the Uinta Uplift and its southern bounding fault, the Uinta Basin Boundary thrust. Locally, the Deep Creek fault zone overprints and dissects the southernmost flank of the broad Uinta Anticline. Other smaller structurally complex areas and folds exist east of the Deep Creek fault zone. The …
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