Larger quakes (greater than 5) are probably from basement adjustments in the Pre Cambrian rocks, which mean they are more likely “Tectonic” in their origin.
The truth about firefighting from an old experienced firefighter
A Frequent Blog of Devotionals Inspired by A Course in Miracles, A Course of Love, The Way of Mastery, Choose Only Love--Plus More . . . with Celia Hales - https://www.amazon.com/author/celiahales
... a collection of letters and thoughts to myself and others as we walk this path of life.
Adventures in prose, at great expense and at the last minute.
Sciencegranny 