CAS ES 105 Lecture Notes - Lecture 5: Weathering, Turbidite, Soil Ph
30 Jul 2018
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Document Summary
Breakdown of rocks, soils, and minerals through direct contact with the planet"s atmosphere. Actually changes form of rock and increases surface area. Break big cube into little cubes increases area bc of increased particles. Matters because there is more area to be weathered increased objects to be further weathered. Chemical soil ph, temperature, precipitation, mineral composition of rock. Congruent weathering results in only dissolved ions. Limestone weathering results in calcium and bicarbonate ions. Florida sinkholes produced by dissolution of limestone by carbonic acid made of limestone (congruent weathering) Incongruent results in newly made clay minerals and dissolved ions (can make a new type of soil/change clay minerals) Feldspar + water + co2 = sodium + bicarbonate + silica = kaolinate (clay) Sand (very coarse sand, coarse sand, medium sand, fine sand, very fine sand ) Size tells us how far they will travel (with rain, snow, ice ets) and ultimately how we make up our marine sediment.
