Soil geology

Jun 28th, 2015
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Although soil seems the end product from weathering rocks, it is merely a stage in the gigantic cycle of mineral recycling by the movement of tectonic plates. Humans use soil for their daily needs but do not sufficiently take account of its slow formation and fast loss. Discover the amazing geology of soil formation and the basic rock and soil types.

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,. Soil geologyBy Dr J Floor Anthoni (2000) www.seafriends.org.nz/enviro/soil/geosoil.htmAlthough soil seems the end product from weathering rocks, it is merely a stage in the gigantic cycle of mineral recycling by the movement of tectonic plates. Humans use soil for their daily needs but do not sufficiently take account of its slow formation and fast loss. Discover the amazing geology of soil formation and the basic rock and soil types. How is soil formed? How does soil become fertile? What is the soil cycle? How does rainfall and evaporation affect soil and the environment? What are soil orders?tectonic mixingThe tectonic movement of the crustal plates sweeps sediments onto continents and underneath them where they are molten into new rock. It is a continuous process of rejuvenating continental rock.rock formationIn the cauldron of Earth, new rocks are formed, to emerge through volcanoes or by being exposed after erosion. The melting pot brings minerals together, then separates them into various classes of igneous rock.. soil formationExposed to low pressure, low temperatures, water and vegetation, rocks decompose into minerals that form soil and that feed plants.soil profileIn a cross-section of soil, various zones or horizons are formed. Each has its own meaning and function.sedimentsBy natural erosion, soil is transported towards the sea but in the process, seggregates its fine particles to form new soils and sedimentary rock.soil ordersS

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