Isotopic composition of Oligocene mafic volcanic rocks in the Northern Rio Grande Rift: Evidence for contributions of ancient intraplate and subduction magmatism to evolution of the lithosphere

1991 ◽  
Vol 96 (B8) ◽  
pp. 13593-13608 ◽  
Author(s):  
Clark M. Johnson ◽  
Ren A. Thompson
Keyword(s):  
Isotopic Composition ◽  
Volcanic Rocks ◽  
Rio Grande ◽  
Rio Grande Rift ◽  
Northern Rio Grande ◽  
Subduction Magmatism

Earthquake Hazard Estimation in Areas of Low Historical Seismicity: A Focus on the Northern Rio Grande Rift, Colorado and New Mexico

1990 ◽  
Vol 6 (4) ◽  
pp. 657-680 ◽  
Author(s):  
Charles E. Glass
Keyword(s):  
New Mexico ◽  
Gaussian Model ◽  
Rio Grande ◽  
Earthquake Hazard ◽  
Weibull Model ◽  
Historical Seismicity ◽  
Rio Grande Rift ◽  
Earthquake Activity ◽  
Sangre De Cristo ◽  
Northern Rio Grande

Estimates of the probability of future earthquake activity are difficult to make in areas where historical seismicity may be low or absent, but where young fault scarps attest to recent or ongoing tectonism. Three non-Poisson models, a Weibull model, a Gaussian model and a lognormal model, are used to estimate the earthquake hazard for one such area, the northern Rio Grande Rift. This portion of the Rio Grande Rift displays numerous Holocene faults attesting to ongoing tectonism, but displays essentially no historical seismicity. The earthquake hazard for the Sangre de Cristo fault zone from Taos, New Mexico to Salida, Colorado calculated using these models is remarkably consistent (probability of at least one Mo = 7 earthquake in the next 50 years ∼ 2.5 × 10−3), with increased hazard for the Sangre de Cristo fault in north San Luis Valley (∼5.0×10−3) and near Taos (∼1.0×10−2) due to the long holding times along these segments.

PRELIMINARY 3D MODEL OF THE SAN LUIS BASIN, NORTHERN RIO GRANDE RIFT, COLORADO AND NEW MEXICO

2016 ◽  
Author(s):  
Benjamin J. Drenth ◽  
◽  
V.J.S. Grauch ◽  
Ren A. Thompson ◽  
Brian D. Rodriguez ◽  
...  
Keyword(s):  
New Mexico ◽  
3D Model ◽  
Rio Grande ◽  
Rio Grande Rift ◽  
San Luis ◽  
Northern Rio Grande

Oligocene basaltic volcanism of the Northern Rio Grande Rift: San Luis Hills, Colorado

1991 ◽  
Vol 96 (B8) ◽  
pp. 13577-13592 ◽  
Author(s):  
Ren A. Thompson ◽  
Clark M. Johnson ◽  
Harald H. Mehnert
Keyword(s):  
Rio Grande ◽  
Rio Grande Rift ◽  
Basaltic Volcanism ◽  
San Luis ◽  
Northern Rio Grande
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