Strain rates and contemporary deformation in the Snake River Plain and surrounding Basin and Range from GPS and seismicity

Payne, S. J.; McCaffrey, Robert J.; King, Robert W.

doi:10.1130/g25039a.1

Cited by 38 publications

(48 citation statements)

References 11 publications

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“…He combined the INL GPS data with other data in the region to produce a horizontal GPS velocity field that encompasses the Pacific Northwest. Locally, the horizontal GPS velocities indicate the Basin and Range is rapidly extending at a rate greater than the very slowly deforming Snake River Plain, which is thought to explain its relative low seismicity (e.g., Payne et al 2008;Payne et al 2012). …”

Section: Continuous Gps Stationsmentioning

confidence: 99%

INL Seismic Monitoring Annual Report: January 1, 2011 - December 31, 2011

Payne¹,

Hodges²,

Berg³

et al. 2012

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Section: Continuous Gps Stationsmentioning

confidence: 99%

INL Seismic Monitoring Annual Report: January 1, 2011 - December 31, 2011

Payne¹,

Hodges²,

Berg³

et al. 2012

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“…He combined the INL GPS data with other data in the region to produce a horizontal GPS velocity field that encompasses the Pacific Northwest. Locally, the horizontal GPS velocities indicate the Basin and Range is extending at a rate that is an order of magnitude greater than the Snake River Plain, which is thought to explain its relative low seismicity (Payne et al 2008a;Payne et al 2008b;Payne et al 2008c). …”

Section: Continuous Gps Stationsmentioning

confidence: 99%

INL Seismic Monitoring Annual Report: January 1, 2009 ? December 31, 2009

Carpenter¹,

Payne²,

Hodges³

et al. 2010

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SUMMARYDuring 2009, the INL Seismic Monitoring Program evaluated 7,509 earthquakes from around the world, the western United States, and local region of the eastern Snake River Plain (ESRP). 2,061 earthquakes and man-made blasts occurred within the local region outside and within a 161-km (or 100-mile) radius of INL. Of these events, 25 were small-to-moderate size earthquakes ranging in magnitude from 3.0 to 4.2. 865 earthquakes occurred within the 161-km radius of INL and the majority of these earthquakes were located in active regions of the Basin and Range Province that surrounds the ESRP. There were seven earthquakes within the boundary of the ESRP, all of M c 2.1 and less.

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“…The relative motions between the Yellowstone Plateau, the seismically quiescent eastern Snake River Plain, and the adjacent seismically active Basin-Range-type terrain are poorly understood, and GPS data have only become available in the last few years [Chadwick et al, 2007;Payne et al, 2007;Puskas et al, 2007b]. Moreover, the Yellowstone Plateau, while strongly influenced by local volcanic deformation, is also experiencing regional lithospheric extension.…”

Section: Introductionmentioning

confidence: 99%

Intraplate deformation and microplate tectonics of the Yellowstone hot spot and surrounding western U.S. interior

Puskas¹,

Smith²

2009

J. Geophys. Res.

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[1] Contemporary deformation of the Yellowstone hot spot and surrounding western United States is analyzed using tectonic microplate modeling, employing constraints from GPS observations corrected for postseismic deformation of M7+ earthquakes, fault slip rates, and earthquake focal mechanisms. We focus primarily on the kinematics of the Yellowstone hot spot and the eastern Snake River Plain volcanic field (ESRP), and secondarily on Basin-Range and Columbia Plateau provinces. Our results reveal southwest motion of the Yellowstone Plateau, excluding localized volcanic deformation, at 0.9 ± 0.1 mm/a that decreases to 0.8 ± 0.1 mm/a in the ESRP block. The southwest to west motion of the Yellowstone-ESRP introduces shear in the northern Rocky Mountain block, which is translating east at 0.78 ± 0.08 mm/a. There is <0.5 mm/a differential motion between the ESRP and the block at its northern boundary and none at the southern boundary. The eastern Basin-Range block moves west at 3.0 ± 0.1 to 4.6 ± 0.1 mm/a, while velocities of the western Basin-Range microplates rotate to a northwest direction, accompanied by a transition from normal to oblique shear deformation. Columbia Plateau block velocities are notably eastward, an effect enhanced by postseismic relaxation following the M9 1700 Cascadia subduction zone paleoearthquake. This study reveals that the overall motion of the western United States is characterized by clockwise rotation, with westward extension and northwest shear in the Basin-Range province, northeast to east contraction in the Columbia Plateau, and southwest extension of the YellowstoneSnake River Plain block that is driven by the high gravitational potential of the Yellowstone swell.Citation: Puskas, C. M., and R. B. Smith (2009), Intraplate deformation and microplate tectonics of the Yellowstone hot spot and surrounding western U.S. interior,

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Strain rates and contemporary deformation in the Snake River Plain and surrounding Basin and Range from GPS and seismicity

Cited by 38 publications

References 11 publications

INL Seismic Monitoring Annual Report: January 1, 2011 - December 31, 2011

INL Seismic Monitoring Annual Report: January 1, 2011 - December 31, 2011

INL Seismic Monitoring Annual Report: January 1, 2009 ? December 31, 2009

Intraplate deformation and microplate tectonics of the Yellowstone hot spot and surrounding western U.S. interior

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