PPT-Soil Clay Minerals and CEC

Ray Ward Ward Laboratories Inc Kearney CATION ADSORPTION Activity of silicate clays refers to cation exchange capacity CEC Ability to retain and supply nutrients Fertility High activity clays. Lithosphere (soils) affected by…. . composition of atm. gases (e.g. 4Fe. 3+. + 30. 2. .  2Fe. 2. O. 3. ) . atmospheric circulation. climate. biological processes (exudation, respiration). Soil is a mixture of Humus, Sand, Silt and Clay. Erosion and decomposition. Soil is . what happens . when:. Erosion . breaks down rocks into smaller pieces (From the bedrock up). . Decomposition . occurs. Living . Stages of clay. Raw. clay is wet clay. You can mold it.. Greenware. is clay that is air dried. Bisqueware. is clay that has been fired . once.. . Glazeware. has a coating of glass that melts and makes the outside of clay smooth and interesting. . POTTERY- . Is a technique using clay to create symmetrical forms on a spinning wheel. . Clay. Clay is Soft and Flexible when Wet, Hard when Dry, and Permanent when Fired.. Ceramics. - is the Art of making something out of clay.. Week 5, Friday; September 26, 2014. Kaolinite. http://. mineral.esci.umn.edu. /node/1182. Illite. http://. sunbio.my. /?. page_id. =121. Vermiculite. http://. www.vermiculite.org. /. what_is_vermiculite.php. Wedging. Working clay on a surface with the palms of the hands in order to remove air from it and obtain a uniform consistency. . Leather hard. The condition of unfired clay when most of the moisture has evaporated leaving it still soft enough to be carved into or joined to other pieces. . All rocks are made up of 2 or more of these minerals. . Minerals are not rocks!. Silicon and oxygen are the most abundant elements in the crust and in minerals. Oxygen is the most abundant element in minerals. Clay is a special type of MUD . . Clay is a natural occurring substance found in the earth.. Clay is made of very fine particles of dirt which float in a stream or river and then sink to the bottom, where they press on each other and stick together. You generally find clay along the banks of a river or stream.. The top layer of Earth’s crust where most plants grow. It contains minerals, decaying organisms, water, and air. It is divided into . horizons. , which are layers . parallel to the Earth’s surface in which . Uppermost layer of earth’s crust that supports plants, animals and microbes. Soil Forming Factors. Parent Material. Time. Climate. Vegetation & Organisms. Topography. 1. Parent Material. Refers to the rock and minerals from which the soil derives.. 3 Properties that make up clay. 1. Plasticity (ability to form). 2. Porosity (ability to hold moisture). *Similar to a sponge. 3. Vitrify (ability to harden and keep its shape). 3 types of clay. Clay is characterized by it’s iron content (color), vitrification process, and firing temperature.. s. oil test interpretation. Weston Miller, . OSU Extension Service. Preview of presentation. Safety precautions. General . soil quality assessment . How to take a soil test. What to test for. Interpreting results. Science Question. . . On Mars, billion-year-old sedimentary rocks containing clay minerals are key indicators of ancient habitable environments and may preserve organic compounds. On Earth, where plate tectonics drives the burial and heating of rocks, clay minerals are transformed into new minerals, influencing organic preservation, and impacting global geochemical cycling of carbon, oxygen, and water. Mars lacked plate tectonics for much of its history, but data from Mars Science Laboratory Rover, . . POTTERY- . Is a technique using clay to create symmetrical forms on a spinning wheel. . Clay. Clay is Soft and Flexible when Wet, Hard when Dry, and Permanent when Fired.. Ceramics. - is the Art of making something out of clay..