GEOL 1304 Lecture Notes - Lecture 5: Oceanic Crust, Oceanic Trench, Continental Crust
Document Summary
Eastern malayo-polynesian - oceanic convergent bounds subduction geographical zone and deep ocean trench -sustained activity track to: island arcs. Sea-floor spreading when two diverging lithospheric tectonic plateful on the ocean storey seperate . Geologic hertz involves tectonic bike , rock wheel , and hydrologic cycle -crust "s ongoing state of change being formed, deformed, moved, and broken down by physical processes. Earthquake and volcanoes atoll formation make-up of the earth"s landforms. Mid-atlantic ridgeline , east paci c procession (nazca plate). Oceanic -continental boundaries subduction zoen and deep ocean trench - some migrate to the surfaces: volcanic arcsexample: 1)upwelling of magma2)plate movement 3)protein folding (warping) foursome )faulting (shearing) 5) earthquake natural process 6) volcanic activity continental encrustation (sial ) Thickest (about 30km) -granite (crystalline and senior high school in silica and aluminum) -sial (silica + Al ) -low density--> more buoyant than eastern malayo-polynesian --> floats on top! divergent limit.
