John H. McBride
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View article: Erosion and Karst in Subsurface Middle Paleozoic Rocks in the Arkoma Basin, Oklahoma, USA
Erosion and Karst in Subsurface Middle Paleozoic Rocks in the Arkoma Basin, Oklahoma, USA Open
Seismic attribute analysis, guided by well data, reveals widespread stratigraphic anomalies caused by erosion or karstification in the late Ordovician-early Devonian Hunton Group in the Arkoma Basin, eastern Oklahoma, USA. This study shows…
View article: Experimental Seismic Surveying in a Historic Underground Metals Mine
Experimental Seismic Surveying in a Historic Underground Metals Mine Open
Underground mine surveys present unique challenges, including the logistics of deploying an energy source, placing geophones in solid rock, managing reverberation from the adit, and ensuring safety. We present the results of seismic survey…
View article: The development of laterite weathering profiles as a function of rainfall and time: A geophysical approach
The development of laterite weathering profiles as a function of rainfall and time: A geophysical approach Open
Laterite weathering profile (LWP) thicknesses are functions of precipitation rate and time, but their exact dependence on them is uncertain. We investigate LWP development on ground surfaces in Hawai'i that are neither aggrading nor erodin…
View article: The Geology of The Mt. Simon Sandstone Storage Complex at the Wabash #1 Well, Vigo Co., Indiana (Subtask 7.2, Technical Report)
The Geology of The Mt. Simon Sandstone Storage Complex at the Wabash #1 Well, Vigo Co., Indiana (Subtask 7.2, Technical Report) Open
The Wabash CarbonSAFE project drilled the Wabash #1 stratigraphic test well (ID# 168045) at the Wabash Valley Resources (WVR) IGCC facility in Vigo County, Indiana, to characterize and evaluate the basal Cambrian Mt. Simon Sandstone for co…
View article: Thermal Spring System Plumbing across a Major Normal Fault: Pah Tempe, Utah, USA
Thermal Spring System Plumbing across a Major Normal Fault: Pah Tempe, Utah, USA Open
Faults, including their cores and associated fracture zones, can play an important role in controlling the flow of ground water. Pah Tempe Hot Springs at Timpoweap Canyon in southwestern Utah provides excellent exposures of the damage zone…
View article: Shallow groundwater flow and inverted fresh/saline-water interface in a hypersaline endorheic basin (Great Basin, USA)
Shallow groundwater flow and inverted fresh/saline-water interface in a hypersaline endorheic basin (Great Basin, USA) Open
Pilot Valley is an 828-km 2 arid-region endorheic basin in western USA. Bounding mountain ranges rise as much as 1,900 m above the nearly flat 379-km 2 playa floor. Up to 3.8 m of Pleistocene Lake Bonneville mud and thin oolitic sand layer…
View article: Virtual Sources of Body Waves from Noise Correlations in a Mineral Exploration Context
Virtual Sources of Body Waves from Noise Correlations in a Mineral Exploration Context Open
The extraction of body waves from passive seismic recordings has great potential for monitoring and imaging applications. The low environmental impact, low cost, and high accessibility of passive techniques makes them especially attractive…
View article: Passive Seismic Ambient Noise Surface Wave Tomography Applied to Two Exploration Targets in Ontario, Canada
Passive Seismic Ambient Noise Surface Wave Tomography Applied to Two Exploration Targets in Ontario, Canada Open
SummaryAs mineral exploration seeks deeper targets and targets under cover, the need for low cost and low impact subsurface imaging is increasingly important. A recent addition to the toolbox of geophysical methods is ambient noise surface…
View article: A conceptual model for the rapid weathering of tropical ocean islands: A synthesis of geochemistry and geophysics, Kohala Peninsula, Hawaii, USA
A conceptual model for the rapid weathering of tropical ocean islands: A synthesis of geochemistry and geophysics, Kohala Peninsula, Hawaii, USA Open
Much of the world's population lives in developing countries in regions with deeply weathered soils and thick, subjacent saprolites. These areas are widespread in the tropics and compose an important component of the critical zone (CZ). Th…
View article: Fine-scale structure of the Precambrian beneath the Illinois Basin
Fine-scale structure of the Precambrian beneath the Illinois Basin Open
Increasing our understanding of the heterogeneity of Precambrian crust continues to be a focus for deep seismic reflection studies. High-resolution two-dimensional (2D) seismic profiles and a high-resolution 3D seismic volume, all centered…
View article: A geophysical strategy for measuring the thickness of the critical zone developed over basalt lavas
A geophysical strategy for measuring the thickness of the critical zone developed over basalt lavas Open
Estimates of the thickness variation in lateritic weathering profiles (LWPs) are important in tropical areas underlain by young basalt lavas like those found in Hawaii. Seismic shear-wave velocity data were obtained by a new application of…