Figure 2. (a) Northeastern Caribbean seismicity for the period 1960-1992. All earthquakes with magnitude > 3.5 are shown. Crosses represent earthquakes shallower than 50 km; circles represent earthquakes deeper than 50 km. (b) Configuration of principal faults and geologic terranes. Abbreviations: J - Jamaica; H - Haiti; DR - Dominican Republic. Velocity vectors and uncertainty ellipses in upper and lower panels are calculated Caribbean-North America velocities and 1s uncertainties from the NUVEL-1 model