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Full-Text Articles in Physical Sciences and Mathematics
The Role Of Fracture Branching In The Evolution Of Fracture Networks: An Outcrop Study Of The Jurassic Navajo Sandstone, Southern Utah, Benjamin E. Surpless, Caroline Mckeighan
The Role Of Fracture Branching In The Evolution Of Fracture Networks: An Outcrop Study Of The Jurassic Navajo Sandstone, Southern Utah, Benjamin E. Surpless, Caroline Mckeighan
Geosciences Faculty Research
Fractures strongly influence the permeability of geologic formations, and because most fractures in the subsurface are below the resolution of geophysical methods, predicting the spatial evolution of fracture networks is important for groundwater resources, oil and gas production, and geothermal energy. Previous researchers have established that variations in lithologic mechanical properties influence the propagation of joints and fractures in layered rocks under stable stress conditions, but few studies have addressed how instabilities in local stress fields, in conjunction with variations in rock mechanical properties, lead to fracture branching.
We investigate NE-striking fractures in the footwall of the west-dipping Sevier fault …
The Unusual Temporal And Spatial Slip History Of The Wassuk Range Normal Fault, Western Nevada (Usa): Implications For Seismic Hazard And Walker Lane Deformation, Benjamin E. Surpless, Glenn C. Kroeger
The Unusual Temporal And Spatial Slip History Of The Wassuk Range Normal Fault, Western Nevada (Usa): Implications For Seismic Hazard And Walker Lane Deformation, Benjamin E. Surpless, Glenn C. Kroeger
Geosciences Faculty Research
We document temporal and spatial variations in vertical displacement rate across 6 temporal orders of magnitude to better under stand how the 100-km-long, east-dipping Wassuk Range normal fault system has accommodated strain in the context of the Walker Lane, a tectonically active, NNWtrending zone of dextral and extensional deformation that affects significant portions of western Nevada and eastern California. We combine 10Be and 26Al cosmonuclide exposure ages with shallow seismic and gravity data from the buried hanging wall of the Wassuk fault to derive a post-113 ka (105 yr time scale) vertical displacement rate of 0.82 ± …