scholarly journals The olivine-clinopyroxene geobarometer: implication for the thermal structure of the upper mantle near the Rio Grande Rift

2019 ◽  
Keyword(s):  
Upper Mantle ◽  
Thermal Structure ◽  
Rio Grande ◽  
Rio Grande Rift

Crustal structure in central New Mexico interpreted from the gasbuggy explosion

1976 ◽  
Vol 66 (3) ◽  
pp. 877-886
Author(s):  
Tousson R. Toppozada ◽  
Allan R. Sanford
Keyword(s):  
New Mexico ◽  
Upper Mantle ◽  
Rio Grande ◽  
Seismic Profile ◽  
Rio Grande Rift ◽  
Additional Information ◽  
Crustal Velocity ◽  
Crustal Model ◽  
Mantle Velocity ◽  
Record Section

abstract Interpretation of a seismic profile extending 548 km southward from the GASBUGGY nuclear test of December 10, 1967 resulted in a crustal model for central New Mexico. The crust is 39.9 km thick below the Paleozoic “basement”. It consists of an upper crust 18.6 km thick having P velocity 6.15 km/sec, and a lower crust 21.3 km thick having P velocity 6.5 km/sec. The apparent upper mantle velocity is 8.12 km/sec. This model applies near the crossover distance, 50 km west of Albuquerque. Additional information from earthquakes and explosions suggests that the upper crustal velocity drops to 5.8 km/sec in the Rio Grande rift, and that the true upper mantle velocity is 7.9 km/sec. The low upper crustal velocity in the Rio Grande rift can be detected on the record section of the GASBUGGY profile.

The upper mantle structure of the central Rio Grande rift region from teleseismicPandSwave travel time delays and attenuation

1996 ◽  
Vol 101 (B7) ◽  
pp. 16003-16023 ◽  
Author(s):  
Philip D. Slack ◽  
Paul M. Davis ◽  
W. Scott Baldridge ◽  
Kenneth H. Olsen ◽  
Andreas Glahn ◽  
...  
Keyword(s):  
Travel Time ◽  
Upper Mantle ◽  
Time Delays ◽  
Rio Grande ◽  
Rio Grande Rift ◽  
Mantle Structure ◽  
Upper Mantle Structure
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