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Sedimentary Rock Classification and Formation

Sedimentary Rock Classification and Formation. Weathering. the breakdown of rocks into smaller pieces (sediments) over time due to heat, wind, water, ice, pressure and gravity. the breakdown of rocks into smaller pieces (sediments) over time due to heat, wind, water, ice, pressure and gravity.

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Sedimentary Rock Classification and Formation

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  1. Sedimentary Rock Classification and Formation

  2. Weathering • the breakdown of rocks into smaller pieces (sediments) over time due to heat, wind, water, ice, pressure and gravity • the breakdown of rocks into smaller pieces (sediments) over time due to heat, wind, water, ice, pressure and gravity • http://www.geography.ndo.co.uk/animationsweathering.htm# http://www.uky.edu/AS/Geology/howell/goodies/elearning/module07swf.swf

  3. Erosion • the movement of sediments caused by wind, water, ice and gravity http://serc.carleton.edu/NAGTWorkshops/visualization/collections/soil_erosion.html

  4. Sediment • The minerals, sand, shells, small rocks and organic matter that make up sedimentary rocks.

  5. Compaction • Occurs when pressure brings sediments together. http://www.uky.edu/AS/Geology/howell/goodies/elearning/module05swf.swf

  6. Cementation • Occurs when minerals act as glue to stick sediments together • This happens when water washes over sediments, leaving dissolved minerals behind http://www.classzone.com/books/earth_science/terc/content/visualizations/es0605/es0605page01.cfm?chapter_no=visualization

  7. Precipitation • Occurs when minerals solidify because of water evaporation http://www.windows.ucar.edu/tour/link=/earth/geology/sed_chemical.html

  8. Clastic Rocks • from compaction and cementation of sediments (sand, shells, minerals, and small rocks)

  9. Chemical Rocks • Form when minerals solidify into rock after the water they were dissolved in evaporates (precipitation)

  10. Organic Rocks • from compaction and cementation of organic materials and/or sediments (sand, shells, minerals, and small rocks) • These are the only rocks that contain organic material

  11. Features of Sedimentary Rocks • Stratification: arranged in visible layers. • Fossils: remains, impressions, or evidence of plant/animal existence preserved in rock. • Ripple Marks: fixed sand patterns formed by wind, stream, waves, currents. • Mud Cracks: muddy water dries out.

  12. Pics Stratification Fossils

  13. Pics Ripple Marks Mud Cracks

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