GEL 5150 Chapter Notes - Chapter 2: Hornblende, Alluvium, Colluvium

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Disintegration into minerals (physical) break down a. b. c. Organic complexes of al 3+ and fe 3+ Si = f( cl, o, r, p, t) O: organisms (biota, especially native vegetation, microbes, soil animals, and increasingly, human beings) R: relief or topography (slope, aspect, and landscape position) P: parent materials (geological or organic precursors to the soil) T: time (the time period of time since the parent materials began to undergo soil formation) Residual parent material unconsolidated and partly weathered mineral materials accumulated by disintegration of consolidated rock in place. Colluvium a deposit of rock fragments and soil material accumulated at the base of step slopes as a result of gravitational action. Terraces (1) a level, usually narrow, plain bordering a river, lake, or the sea. Delta an alluvial deposit formed where a stream or river drops its sediment load upon entering a quieter body of water. Parent materials transported by glacial ice and meltwaters.

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