This is the current USGS online real-time earthquake map, showing quakes of magnitude 2.5+ that they have detected. The red lines mark tectonic plate boundaries.
Look at the US.
That’s a fair number of intraplate quakes in the continental US (Alaska doesn’t count – it’s near a subduction zone – and that dot in the middle of the Pacific is Hawaii: volcanoes). According to plate tectonics theory, there shouldn’t be any. Of course, there are anyway, because theories are always imperfect and need constant fine tuning (and sometimes, on rare occasions, complete trashing when a better one comes along).
No, this doesn’t mean a disaster is looming. It’s just interesting and, to me, inexplicable.
Categories: Random thoughts