Evidence for an upper mantle low velocity zone beneath the southern Basin and Range-Colorado Plateau transition zone

Details Evidence for an upper mantle low velocity zone beneath the southern Basin and Range-Colorado Plateau transition zone Evidence for an upper mantle low velocity zone beneath the southern Basin and Range-Colorado Plateau transition zone

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21..509b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 7, p. 509-512

Physics

Geophysics

9

Earth Mantle, P Waves, Plates (Tectonics), Seismology, Wave Propagation, Colorado Plateau (Us), Earth Crust, Geophysics, Propagation Velocity, Seismographs

Scientific paper

A 370-km-long seismic refraction/wide-angle reflection profile recorded during the Pacific to Arizona Crustal Experiment (PACE) detected an upper mantle P-wave low-velocity zone (LVZ) in the depth range 40 to 55 km beneath the Basin and Range in Southern Arizona. Interpretation of seismic data places constraints on the sub-crustal lithosphere of the southern Basin and Range Province, which is important in light of the active tectonics of the region and the unknown role of the sub-crustal lithosphere in the development of the western United States. Forward travel time and synthetic seismogram techniques are used to model this shallow upper mantle LVZ. Modeling results show that the LVZ is defined by a 5% velocity decrease relative to a P(sub n) velocity of 7.95 km/s, suggesting either an approximately 3-5% mafic partial melt or high-temperature, sub-solidus peridotite.

Affiliated with

Also associated with

No associations

Rating

Evidence for an upper mantle low velocity zone beneath the southern Basin and Range-Colorado Plateau transition zone does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Evidence for an upper mantle low velocity zone beneath the southern Basin and Range-Colorado Plateau transition zone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evidence for an upper mantle low velocity zone beneath the southern Basin and Range-Colorado Plateau transition zone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1256745