GEOL107 Lecture Notes - Lecture 9: Chert, Foraminifera, Sylvite
24 Sep 2017
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Document Summary
Erosion, transportation, deposition, and subsequent lithification of preexisting rocks near, or at surface of earth. Examples of clastic sedimentary rocks include together to make rock. Conglomerate - grain sizes more than 2mm in diameter (size of. Sandstone - grain sizes between 2 mm and 1/16th mm in diameter. Siltstone - grain sizes between 1/16th mm and 1/256th mm in. Shale - grain sizes less than 1/256th mm in diameter (size of clay granules, pebbles, boulders) opposed to rounded) (size of sand particles) diameter (size of silt articles) particles) Subdivided (named) based primarily on composition. chemical reactions occurring at/near earth"s surface. Formed by organic or inorganic chemical reactions - as an example of an organic chemical reaction forming limestones - we go to the oceans. In life processes, coccolithophorids and foraminifera take in seawater and precipitate out calcium (ca2+) and carbonate (co 3 .
