seismology
greengabbro | March 2, 2009Once again it is time to acknowledge that I will never read all of the papers I've flagged in my RSS reader... but I can at least go through the abstracts. While my summaries here may be slightly in error due to the fact that I haven't actually read the papers in question, here is what I'm skimming:
Clay might trigger earthquakes - Many clay minerals break down, when heated, to produce H2O + different clay minerals. If this water is produced inside a clay-lined fault zone, and not allowed to leave, it might weaken the fault enough to produce an earthquake (cf. the beer can experiment).…
esiegel | April 21, 2008What makes earthquakes? Although there are many causes, including volcanoes, the most common thing that causes them are tectonic motions, which also cause tsunamis. But as valuable as it is to understand other planets in our solar system and in other star systems, sometimes it's important to understand what's going on inside our own planet.
The crust of the Earth actually is made up of a number of plates, which rub against one another and move over time. Who's to blame? I fault the liquid hot magma.
So what happens is that these plates slip against each other in one of three ways, as shown…