GEOL105 and AHIS120g

GEOL105 and AHIS120g - San Andreas fault has been...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
San Andreas fault has been relatively quiet compared to Anatolian fault.  Why do earthquakes occur?  Pre-, inter-, co-seismic strain… Suppose there is a fault and you put a fence A there. after a couple of years,  A is bent – elastically bending. Everything has an elastic limit – causes 2  things – permanent deformation or breakage. One earth, it snaps – and after  it snaps, two pieces are straight. So A’ is pre-earthquake strain. Then there is  too much shear stress which causes a slip fault.  Figure 11.5 san andrea’s fault The progressive build up of elastic strain by… It is a cycle. Recurrence interval can vary dramatically. In the case of san  andreas – the recurrence interval is worrisome.  EARTHQUAKES Oklahoma – mid continent area.  Even though it was 5.6 M it didn’t do much damage. It started from Wisconsin.  Old continental crust underneath the mid-west not affected by magma and 
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/06/2012 for the course GEOLOGY AN 105 and 12 taught by Professor Gregorydavis during the Spring '11 term at USC.

Page1 / 2

GEOL105 and AHIS120g - San Andreas fault has been...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online