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). Lesson two: Soils. Time to observe and learn. You will examine three types of soil:. Clay. Sand. Loam. You will need to read and follow the instructions carefully. After examining the soil types:. What are some ways we can classify soils?. Wednesday . 4. th. Feb. . 2015, . 6.00 PM for 6.30pm. AFES Meeting. : . Feb. . 2015. Aberdeen Formation Evaluation Society is a registered Scottish Charity. Charity number SC039526.. .  . The Influence of Clay Mineralogy on Formation Damage in North Sea Hydrocarbon Reservoir Sandstones. Liz Rampe (NASA-JSC/ORAU). 9 July 2012. elizabeth.b.rampe@nasa.gov. Why Study Minerals on Mars?. Link to past and present geologic processes. Understand how geologic processes changed over time. Rock forming processes. 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. Based on “Sustainable Soil Management” from the National Sustainable Ag. Information Service . By C. Kohn. What is Soil?. Take a moment and create your own definition of soil.. When instructed, discuss your definition with a partner. Try to come to a consensus definition that both you and your partner can agree on.. A. Explain the nature and composition of soil;. Soil is the outer layer of the earth. Dirt is displaced Soil. Composition of average soil . a. 25% Air. . b. 25% Water. . c. 5% Organic Matter. . d. 45% Mineral Matter. 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. By C. Kohn. What is Soil?. Take a moment and create your own definition of soil.. When instructed, discuss your definition with a partner. Try to come to a consensus definition that both you and your partner can agree on.. 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 . Any disintegrated . surface . material, . natural or artificial that lies on or near the Earth’s surface. .. Natural= rocks, minerals, vegetation, animal . matter. Manufactured= glass, paint, asphalt, brick fragments, cinders. 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, . Figure 3-24. Fig. 3-24a, p. 69. Mosaic of closely packed pebbles, boulders. Weak humus-mineral mixture. Dry, brown to reddish-brown with variable accumulations of clay, calcium and carbonate, and soluble salts.