Crustal structure of Iraq from receiver functions and surface wave dispersion: implications for understanding the deformation history of the Arabian-Eurasian collision

Details Crustal structure of Iraq from receiver functions and surface wave dispersion: implications for understanding the deformation history of the Arabian-Eurasian collision Crustal structure of Iraq from receiver functions and surface wave dispersion: implications for understanding the deformation history of the Arabian-Eurasian collision

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008geoji.172.1179g&link_type=abstract

Geophysical Journal International, Volume 172, Issue 24, pp. 1179-1187.

Astronomy and Astrophysics

Astronomy

11

Body Waves, Surface Waves And Free Oscillations, Continental Tectonics: Compressional, Crustal Structure

Scientific paper

We report the crustal structure for two locations in Iraq estimated by joint inversion of P-wave receiver functions (RFs) and surface (Rayleigh) wave group velocity dispersion. RFs were computed from teleseismic recordings at two temporary broad-band seismic stations located in Mosul (MSL) in the Zagros Fold Belt and Baghdad (BHD) in the Mesopotamian Foredeep. Group velocity dispersion curves at the sites were derived from continental-scale tomography. The inversion results show that the crustal thicknesses are 39 km at MSL and 43 km at BHD. We observe a strong PsMoho at BHD consistent with a sharp Moho discontinuity. However, at MSL we observe a weak PsMoho suggesting a transitional Moho where crustal thickening is likely to be occurring in the deep crust. Both sites reveal low velocity surface layers consistent with sedimentary thickness of about 3 km at station MSL and 7 km at BHD and agreeing well with the previous reports. Ignoring the sediments, the crystalline crustal velocities and thicknesses are remarkably similar at both stations. The similarity of crustal structure suggests that the crust of the northeastern proto-Arabian Platform was uniform before subsidence and deposition of the sediments in the Cenozoic. If crystalline crustal structure is uniform across the northern Arabian Platform then crustal thickness variations in the Zagros Fold Belt and Thrust Zone should reveal the history of deformation and crustal shortening in the Arabian-Eurasian collision zone and not reflect pre-existing crustal thickness variations in the Arabian Plate.

Affiliated with

Also associated with

No associations

Rating

Crustal structure of Iraq from receiver functions and surface wave dispersion: implications for understanding the deformation history of the Arabian-Eurasian collision 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 Crustal structure of Iraq from receiver functions and surface wave dispersion: implications for understanding the deformation history of the Arabian-Eurasian collision, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crustal structure of Iraq from receiver functions and surface wave dispersion: implications for understanding the deformation history of the Arabian-Eurasian collision will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-957233