GLG101IN Study Guide - Comprehensive Final Guide: Igneous Textures, Sedimentary Rock, Metamorphic Rock
28 Nov 2016
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Young rock found at mid-ocean ridges and volcanos: cosmos, lab. These note are continuation of previous notes and classes. Precambrian era: lasted until 542 million years ago, basic single celled life. Both light and dark colored: felsic. Light colored: igneous rock lab (started will finish 9/8/2016, andesite. Lesson: mineral lab (finish), igneous rocks, igneous rock lab (9/6/2016) The rock cycle: rocks are naturally formed, consolidation materials usually composed of grains of one or more minerals, the rock cycle shows how one form of rocky material gets transformed in another. Too much heat will make it igneous: can be weathered back into sedimentary. Example is granite: extrusive form is when it solidifies above the earth"s surface. Example is obsidian: cooled so fast that it became natural glass, textures. Lesson: continuation of igneous rocks, igneous rock lab( continue from tuesday) and geologic. Corse grain: large crystals, greater < 1mm. Large visible crystals: in a groundmass with no visible crystals, igneous rock lab.
