geology 101 study guide

geology 101 study guide - Weathering and Erosion Weathering...

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Weathering and Erosion Ä Weathering WIND TEMPERATURE is the process by which atmospheric agents at or near the earth s surface cause rocks and π minerals to break down. CHANGES CHEMISTRY Ä Erosion is the process by which moving water, wind, ice or gravity moves pieces of rock and deposits them elsewhere. DOES NOT CHANGE CHEMISTRY Types of Weathering Ä Chemical Ä Physical Chemical Weathering DISSOLUTION: Takes place when minerals in a rock are chemically altered or dissolved RAIN CAUSES IT Formation of Kaolinite clay through chemical weathering of Feldspar IS LIKE A COFFE POTT Chemical weathering of Carbonates calcite + carbonic acid calcium ion + bicarbonate ion CaCO 3 H 2 CO 3 Ca 2 + 2HCO 3 - PEOPLE PRODUCE A LOT OF CO2 AS WELL
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Formation of Iron Oxide through chemical ]weathering of Pyroxene- DISSOLVES THE RELASSE SILICA AND FERROUS IRON TO SOLUTION FERROUS IS OXIDEIXED BY OXYGEN MOLECULES TO RFO (Fig. 7.8) Rocks and sediments with Oxidized Iron SCAN IN FIGURE 7.2 FOR MINERALS UNDER WEATHERING.
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geology 101 study guide - Weathering and Erosion Weathering...

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