Tectonic And Magmatic History Western Snake River Plain Wood And Clemens Pdf

tectonic and magmatic history western snake river plain wood and clemens pdf

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Geologic and Tectonic History of the Western Snake River Plain, Idaho and Oregon

Luke P. Beranek, Paul Karl Link, C. GSA Bulletin ;; : — These samples effectively show that modern stream sediments of the Snake River system reliably and repeatedly record the detrital zircon age populations that are present as sources in their drainage basins across the Cordilleran thrust belt and Basin and Range Province. We use this framework and the provenance of Neogene sedimentary rocks in the region to test the effect of the migrating Yellowstone hotspot on regional drainage patterns in southern Idaho since the middle Miocene. Our results indicate that Neogene paleodrainages were first directed radially away from the tumescent Yellow-stone highland, then subsequently reversed their flow toward the subsiding Snake River Plain basin. This occurred in east-progressing time-constrained intervals starting at 16 Ma.

Metrics details. A geothermal exploration corehole was drilled to a total depth of The corehole was used to collect an unusually large amount of data, including uniaxial compressive stress UCS experiments on core samples, to evaluate the geothermal potential of the western Snake River Plain. In addition, unlike many exploration holes in this region, a fluid entry was encountered at A maximum temperature of Chemical analyses of a sample from the fluid entry suggest that a significant proportion of the water is not meteoric. Furthermore, based on the unconfined UCS experiments on basalt core samples, a brittle unit was found to comprise the fractured reservoir that the geothermal water flows from, while an overlying ductile unit acts as a hydrothermal caprock.

Geologic and Tectonic History of the Western Snake River Plain, Idaho and Oregon

Khatiwada, Murari, and G. Randy Keller. Structural complexities and evolution of the Snake River Plain SRP and the role of extension in its formation have been a topic of scientific discussion for decades. Recent oil and natural gas exploration that is taking place on the Western Snake River Plain WSRP is another important factor in the need for a detailed scientific study of the area. In this research, we are addressing some of these issues by focusing on the WSRP, using a pre-existing gravity and magnetic database compiled through a community effort. For gravity processing, we used upward continuation filters to delineate features by wavelength. TMI values range over nT with much more complex and erratic magnetic signatures that arise from the shallow flood basalts and rhyolite deposits within the region.


The western Snake River Plain is a Neogene-aged intracontinental rift basin, about 70 km wide km that could be restite or an underplate of basalt related to formation of the silicic magma. S. H. Wood, D. Clemens; Published ; Geology.


Geologic and tectonic history of the western Snake River Plain, Idaho and Oregon

A geothermal exploration corehole was drilled to a total depth of The corehole was used to collect an unusually large amount of data, including uniaxial compressive stress UCS experiments on core samples, to evaluate the geothermal potential of the western Snake River Plain. In addition, unlike many exploration holes in this region, a fluid entry was encountered at A maximum temperature of Chemical analyses of a sample from the fluid entry suggest that a significant proportion of the water is not meteoric.

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Tectonic and Magmatic Evolution of the Snake River Plain Volcanic Province: Wood and Clemens—Geologic and Tectonic History of the Western Snake River​.

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Tectonic and Magmatic Evolution of the Snake River Plain Volcanic Province depression with only Clemens and Wood () mapped rhyolite in the area.

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