GEOL 1001 Lecture : Notes On Faults
Document Summary
Plates and boundaries: a. divergent, b. convergent, c. transform. Faults- break in rock, where movement has occurred: classified based on relative movements on two sides, faults are younger than the rocks they cut, a. footwall- under (stays, b. Normal hanging wall moves down relative to footwall: happens when pulling the rock, 2. Reverse/ thrust- hanging wall moves up relative to footwall: convergent bound rocks come together (seduction, reverse if fault is > 30 degrees, thrust-shallow if fault is <30 degrees, 3. Strike-slip- two sides move past (next) to one another: fault vertical, no hanging or foot wall. Plates- lithosphere: contains continental- oceanic crust, upper most mantle, about 150km thick from crust 100km thick through ocean. Boundries- 12 major plates eq faults squishing: divergent- plates move away from each other (mid ocean ridge, extension, pulling apart, normal faults, convergent- plates move toward each other (subduction, transform- slide past one another.
