Earthquake, Magnitude 2.2 – PUERTO RICO – 2022 May 20, 11:47:35 UTC
References for tectonic plate boundaries:
Coffin, M.F., Gahagan, L.M., and Lawver, L.A., 1998, Present-day Plate Boundary Digital Data Compilation. University of Texas Institute for Geophysics Technical Report No. 174, pp. 5. …