GEOL 1001 : Exam One Notes
Document Summary
Geology: science of the earth, divided into two parts, physical geology, study of earth"s materials, processes that occur on the surface and inside of the. [hydrosphere] (drinkable water goes into the ocean) biosphere [polar bears no home] (more intense storms) geosphere (weather more) [lose beaches] Earth as a system: system: interacting parts form a complex whole, study small parts, think about how this affects the earth system. Rock cycle: igneous rock, formed from magma (below earth, sedimentary rocks, result of weathering, metamorphic rock, lithificaction. Plate, south american plate, pacific plate, nazca plate: boundaries, deformation occurs. Breaks, bends, stretches: plates are in constant motion, fast moving plates 15cm/year, average moving plates 5cm/year. Density of lithosphere > density of the asthenosphere. After the subducted plate reaches 100km of depth, melting occurs because the oceanic crust is full of water. Volcanic arc cascade rang: continent-continent collision. Reverse faults form on the right side where the crust is pushed upward.
