GEOL-1010 Lecture Notes - Lecture 6: Facies, Parent Rock, Diagenesis
20 Sep 2016
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Geol 1010 lecture 6 part 1: metamorphism. Mountain formation, uplifts, collision zones, and temp and. Pressure at depth are all studied through metamorphic rocks. Pilot mountain (nc: it"s odd because it stands alone on the piedmont. It"s not a part of a continuous mountain belt: analyzing the metamorphic rocks that make up part of. Pilot mountain help us determine how it formed: many cool minerals are found only in metamorphic rocks. Talc, chlorite, epidote, garnet, actinolite, serpentine, crysotile asbestos, staurolite, corundum. Forming metamorphic rocks: there are a few different possible methods to form metamorphic rocks, method 1: increase temperature. As temperature rises, some minerals in the parent rock will become unstable. The temperature increases the deeper below the surface you go. Geothermal (gt) gradient: temp change with the depth in the. Average gt gradient = 30 degrees celsius per km. Typical range = 20-60 degrees celsius per km: it depends on the crust"s thickness.
