Rock precursors and how they relate to earth quakes?

Question

no

Answer 1

I'm not exactly sure what you are asking, but if you are asking about precursors to earthquakes, there are very few. Rock type can help us understand where earthquakes are likely, but not when they happen.

This is what Dr. Jackson of UCLA told me, a leading geophysist:

Earthquakes follow NO predictable pattern. People have tried and tried, with no luck. They may have accidentally predicted one, but they can not predict anything consistantly.

Earthquakes fall into 3 categories. Some do behave well, they have foreshocks, they show subtle signs, and have aftershocks very nicely. They are still not predictable, but they are closer to being predicted. Some have no warning at all and never show any signs of going. The third group follow no pattern at all, they go seemingly randomly, and they can not even be estimated. It is very hard to tell which fault will be in which group, and this is why prediction is still several breakthroughs away.