ESC2000 Lecture Notes - Lecture 10: Sedimentary Rock, Silicate Minerals, Siltstone
Document Summary
Formation of minerals: from a cooling magma, precipitation, metamorphism. Non-silicate mineral groups: carbonates- limestones=caco3 a)cave limestones b)fossil coral c)marine limestones(chalk, metals- gold, silver, copper, platinum, salts- halite, sulfur, sulfides- sulfur+metal: pyrite(fes2, oxides- oxygen+metal: hematite(fe2o3) magnetite(fe3o4, carbon- diamond+graphite. 1: sedimentary- by products of weathering erosion of any rock type, metamorphic- any rock type subjective to elevate temperatures, and/or pressures. Igneous: from cooling magma/lava, composting of the magma, cooling history. *magma deep underground- cools very slowly and results in growth of large crystals=coarse grained texture=intrusive. *lava cooling on surface= rapid cooling= results in microscopic crystals=fine grained texture=extrusive. If magma/lava has high silica content, and low fe+mg. If magma/lava has low si content and high fe+mg. Whats on the test next tuesday 9/13/16 - what science is and based on, how the solar system is formed, lithosphere stuff, minerals, igneous, sedimentary, and metamorphic rock.
