ENVIRONMENT OF THE EARTH
ENVIRONMENT OF THE EARTH GEOL 103
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This 2 page Class Notes was uploaded by Brandon Dickinson on Monday October 26, 2015. The Class Notes belongs to GEOL 103 at University of South Carolina - Columbia taught by R. Torres in Fall. Since its upload, it has received 8 views. For similar materials see /class/229613/geol-103-university-of-south-carolina-columbia in Geology at University of South Carolina - Columbia.
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Date Created: 10/26/15
Geology 103 1 Divergent margins are spreading centers where new crust formed 2 convergent margins are areas where old crust is consumed or recycled 3 production of new crust at mid ocean rides drives continental drift 4 rock cycle describes the production alteration destruction and regeneration of rock and mineral material 5 rock cycle the engines driving the rock cycle are 1 earth s internal energy 2 solar energy 3 gravitational potential energy 6 mineral a naturally occurring inorganic solid with a specific chemical composition and well defined crystal structures 7 Major groups silicates minerals based on the silicates ion The most abundant mineral groups in the crust 8 Oxides minerals with oxygen anions 9 Sulfides minerals with sulfide anions 10 Rock is a naturally formed coherent and relatively hard assemblage of minerals 11 Major rock groups igneous rocks rocks that solidify from molten magma 12 Sedimentary rocks rocks that reform from bits of older rocks mineral and organic matter 13 Metamorphic rock 14 Origin of igneous rocks controlled by plate tectonics 15 Modern ripples 16 Fossil ripples 17 Modern gravel 18 Ancient gravel 19 Sedimentary rock 20 Origin of sedimentary rocks lake basin beach 21 Metamorphic rock quartz feldspar 22 Rocks and minerals undergo a transformation in the Earth and at the Earth s surface The transformation is called weathering 23 Soil and weathered rocks 24 Weatheringat the Earth surface rocks and minerals are subject to change because of exposure to air water and organic matter 25 The interactions result in the breakdown of rock and mineral material called weathering 26 Two types physical weathering refers to the mechanical fragmentation of rocks and minerals 27 Chemical weathering refers to the chemical alteration of rocks and minerals 28 Physical weathering of rock is related to plate motions N 59 Rock fracture because the crust is under stress and they are brittle w 53 Figure 33 graph of elasticity W Biological process brake up rock too 04 Iquot Net result of weathering 1 cube to 6 faces 8 cubes to 48 faces 64 cubes to 384 faces 33 Physical weathering disaggregates rock and increase total surface area This process leads to a greater opportunity for chemical reactions 34
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