CSES 2040 Lecture Notes - Lecture 2: Regolith, Pyroxene, Gypsum
18 Jan 2017
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Document Summary
There is interaction between organisms and soil, and soil is changed over time by organisms. Biological or chemical processes that destroy or decompose rocks. :rain, moving water, ice, wind, temperature, plants, animals. :rate and products of weathering depend of nature of parent material. Formed by the cooling of molten lava. Extrusive = forms when lava comes to the surface. Intrusive = forms when lava is cooled below the surface. Note that: silica content is often used to classify types of rocks. Deposition and recrystallization of weathering products from other rocks. : requires heat or pressure to transform igneous and sedimentary rocks. Minerals are naturally occurring substances with de nite chemical composition. Dissolving a solid into a solution ( sweet tea ) Destabilization of the crystal structure, causing it to break down (rust) Intact water molecules can change the structure of minerals ( grapes and raisins )
