Mathematics – Logic
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004e%26psl.223..177v&link_type=abstract
Earth and Planetary Science Letters, Volume 223, Issue 1-2, p. 177-185.
Mathematics
Logic
28
Alborz, Oblique Collision, Gps, Fault Motion, Seismic Hazard
Scientific paper
The Alborz is a narrow (100 km) and elevated (3000 m) mountain belt which accommodates the differential motion between the Sanandaj-Sirjan zone in central Iran and the South Caspian basin. GPS measurements of 12 geodetic sites in Central Alborz between 2000 and 2002 allow to constrain the motion of the belt with respect to western Eurasia. One site velocity on the Caspian shoreline suggests that the South Caspian basin moves northwest at a rate of 6+/-2 mm/year with respect to western Eurasia. North-South shortening across the Alborz occurs at 5+/-2 mm/year. To the South, deformation seems to extend beyond the piedmont area, probably due to active thrusting on the Pishva fault. We also observe a left-lateral shear of the overall belt at a rate of 4+/-2 mm/year, consistent with the geological motion observed along E-W active strike-slip faults inside the belt (e.g., the Mosha fault).
Bayer Rolf
Chéry Jean
Djamour Yahya
Masson Frédéric
Nankali Hamid
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