Seismotectonics of Jamaica

Details Seismotectonics of Jamaica Seismotectonics of Jamaica

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005geoji.160..573w&link_type=abstract

Geophysical Journal International, Volume 160, Issue 2, pp. 573-580.

Astronomy and Astrophysics

Astronomy

2

Caribbean, Fault Plane, Jamaica, Seismicity, Stress Regime, Tectonics

Scientific paper

This is the first seismological investigation of the stress regime in the Jamaican crust. The fault plane solutions of 32 well-recorded local earthquakes were determined and used as inputs for determining stress directions. The results consistently show that a strike-slip fault regime (SH > Sv > Sh) exists in three homogeneous crustal areas, namely the Blue Mountain-Wagwater restraining bend of eastern Jamaica, the Rio Minho-Crawle River (RMCR) fault of central Jamaica and the Montpelier-Newmarket belt (MNB) of western Jamaica. However, for the island as a whole, a thrust-faulting regime (SH > Sh > Sv) was found, but inhomogeneity is implied by the higher level of misfit obtained. These results are in keeping with results of other recent studies in the Jamaica-Cuba region and with the strike-slip regime of the Gonave microplate boundaries.

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