Mathematics – Logic
Scientific paper
Nov 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993e%26psl.120...31h&link_type=abstract
Earth and Planetary Science Letters (ISSN 0012-821X), vol. 120, no. 1-2, p. 31-41
Mathematics
Logic
4
Earthquakes, Geological Faults, Morocco, Plates (Tectonics), Seismology, Lithosphere, Microseisms, Pressure Effects, Topography
Scientific paper
Three hundred and twenty earthquakes recorded in the course of 5 weeks in 1989 in the central Rif of northern Morocco provided no evidence for activity on the Nekor fault (the principal geological structure in the region) itself; most of the seismicity is located northwest of the Nekor fault. Most of the 41 fault-plane solutions show mainly strike-slip motion (left-lateral on N-S striking planes) with P axes trending N 145 deg. This deformation is consistent with the N-S trending normal faults caused by the E-W Quaternary extension and with the present relative NW-SE convergence between Africa and Europe. The active deformation around the eastern Rif is better represented by a distributed shear zone than by a strike-slip fault.
Caillot V.
Cherkaoui Taj-Eddine
Hatzfeld Denis
Jebli H.
Medina Francisco
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