GEOL 1001 : Exam 2 Notes
Document Summary
Degree to which all grains are equal in size. Rock names (sedimentary) source) has been some environment lagoons. Biochemical sedimentary rocks (marine environments) coarse grained ; larger than sand sized types of course grained: transportation) Sand sized grains - sandstone = beach/sand dune/river. Clay sized grains- shale or mudstones = deltas, swamps, Comes form the shells of coral/ clams, oysters, snails/ plankton. Chalk: made from plankton shells; really fine grained. Coal - cryptocrystalline quartz very fine grained plankton secrete sio2 accumulation of sio2 gel "ooze" Not tied in caco3 precipitate from water solution terrestrial (non-marine) Salts that precipitate from lakes accumulate with sediment eventually hardens; no grains show organism leaves behind fat, cellulose, protein, organic. When the lake evaporates faster than new water. Super saturated quartz replaces other minerals (due to groundwater. Caco3 - calcite forms from degassing co2 from water mainly in caves, and springs comes in. Change in bedding represents a change in condition level drop) textures, and.
