EESA06H3 Lecture : Lecture 3
Document Summary
Propagates the rocks as seismic waves fault trace: part of the fault showing on the surface; often buried (blind faults) fault plane: part of the fault showing underneath. Waves in between pacific plate and indo-australian plate a lot of fault scarps surface waves does most damage to buildings (e. g. love wave and rayleigh wave) P-waves that pass through the core are refracted. Seismic tomography image of the earth"s interior in slices there are major physical properties (temperature, pressure) changes that affect the waves. A computer model of the earth"s interior the core is hard the liquid on the outside is in the shape of plumes www. notesolution. com. Descending slab: slab-pull pulls the rock into the earth and slab-rollback moves it at an angle trench suction: rotation of the mantle rates: 2-25cm/year. Lithospheric plate crust + asthenosphere (weak rock of the upper mantle) continental crust is thicker (<70km thick) Oceanic crust is much thinner (5-8km thick)
