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| Description: Alters the internal structures of minerals by removing or adding elements Most important agent is water Oxygen dissolved in water oxidizes materials Carbon dioxide (CO2) dissolved in water forms carbonic acid and alters the material Weathering of granite Weathering of potassium feldspar produces clay minerals, soluble salt (potassium bicarbonate), and silica in solution Quartz remains substantially unaltered Weathering of silicate minerals produces insoluble iron oxides and clay minerals Spheroidal Weathering Generates rounded rocks Weathering works inward from exposed surfaces Picture Stats: Views: 507 Filesize: 151.49kB Height: 654 Width: 1420 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39421 |