GEOG 1002 Study Guide - Midterm Guide: Diorite, Olivine, Mafic
17 Feb 2020
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Format: one-word answers, plus explaining some answers, questions directly from lab or indicative of the questions in the labs. Igneous rocks: identifying and describing them, look at samples of fossils and three types of rocks, composition and texture, composition: Felsic: color: predominantly light in color, ex: granite is predominantly light color minerals, so felsic even though it has some dark and medium colors, diorite: half-light half-dark. None peridotite: basalt: oceanic crust, granite: continental crust, andesite: explosive volcanoes, if something cooled plutonically but it is intermediate: diorite, bowen"s reaction series: Order in which minerals come out of the melt: ultramafic, comes out of high temperature minerals, felsic minerals are low temperature minerals. Metamorphic rocks: thinking about any rock that has been messed up from heat and/or pressure, presence or absence of foliation: Some kind of fabric or orientation foliated vs. non-foliated. Foliated: slate, phyllite, schist, gneiss (high grade metamorphic)
