GEOL 11040 Lecture Notes - Lecture 9: Metamorphic Rock, Transform Fault, Subduction

• School: Kent State University
• Department: Geology
• Course: GEOL 11040
• Professor: Christopher Rowan

Document Summary

Igneous rocks: interlocked minerals crystallized by lava. Sedimentary rocks: eroded or chemically precipitated grains that have been (re)deposited and cemented together. Made when debri is created in high locations and then deposited into low locations. Clastic sediment is created in uplifted regions. Water from which biochemical/chemical sediments precipitate and settle at subsided regions. Metamorphic rock: igneous or sedimentary rocks that are altered and crystallized by heat and pressure. Made where rocks are heated, squeezed, and/or buried. The majority of rock creation is at plate boundaries. Creation, destruction, and transformation of rocks drives the movement of materials between the mantle, lithosphere/crust, oceans, and atmosphere. These processes are connected to plate tectonics. Occurs towards the end of this process, when the asthenosphere is able to rise to the surface. Passive margins: the stretched and subsided continental crust on the edge of ocean basins. Diverging plates create a gap where the asthenosphere can rise up.