Integrated and Integrated and Comparative Geophysical Comparative Geophysical Studies of Studies of CrustalCrustal StructureStructure of Pull-apart Basins: The of Pull-apart Basins: The Salton Trough and Death Salton Trough and Death Valley, California RegionsValley, California Regions

Crust, MohoCrust, Moho

Crustal Structure (Model)Crustal Structure (Model)

Integrated:Integrated:

- Receiver Function- Receiver Function

- Gravity- Gravity- MagneticMagnetic- Pre-existing seismic modelsPre-existing seismic models

RFRF A receiver function is the seismic response of the earth A receiver function is the seismic response of the earth

beneath a seismic station to an incoming P-wave. The beneath a seismic station to an incoming P-wave. The physical earth property that controls what is observed in a physical earth property that controls what is observed in a receiver function is the P-to-S impedance structurereceiver function is the P-to-S impedance structure

http://http://www.earthscope.orgwww.earthscope.org//

http://http://www.seis.sc.eduwww.seis.sc.edu/ears//ears/

RFRF

GravityGravity http://http://research.utep.eduresearch.utep.edu//

Bouguer anomaly mapBouguer anomaly map

Crustal ModelsCrustal Models Four 2-D crustal models were constructed Four 2-D crustal models were constructed A-A`, B-B`, C-C trend in SW-NE and D-D` trends in NW-SE A-A`, B-B`, C-C trend in SW-NE and D-D` trends in NW-SE

direction direction

http://http://woodshole.er.usgs.gov/mapitwoodshole.er.usgs.gov/mapit//

http://gmt.soest.hawaii.edu/ http://gmt.soest.hawaii.edu/