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Moving Rock

Moving Rock. Weathering & Erosion. Weathering. Processes that change the characteristics of rocks on the Earth’s surface Must occur BEFORE erosion can happen No movement is involved Occurs when rocks are exposed to water, air or plants. Mechanical Weathering .

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Moving Rock

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  1. Moving Rock Weathering & Erosion

  2. Weathering • Processes that change the characteristics of rocks on the Earth’s surface • Must occur BEFORE erosion can happen • No movement is involved • Occurs when rocks are exposed to water, air or plants

  3. Mechanical Weathering • BREAKS rocks into different shapes and smaller sizes • Jagged rocks usually become smooth

  4. Abrasion • Breaking, grinding, wearing away of rock • Caused by wind and water http://richmond.k12.va.us/schools/thirteenacres/images/rockpic5.jpg

  5. Frost Action or Ice Wedging • Freezing water in cracks expands and breaks rocks http://www.bearmountainzoo.org/es12.jpg

  6. Plate Movement • The moving and sliding of tectonic plates wear away rocks as they slide past each other http://piru.alexandria.ucsb.edu/~tierney/trs0demo/trs-0_files/geosystems12-08%5B1%5D.jpg

  7. Exfoliation / Temperature Change • Warming and cooling of rock causes top layers to break off in sheets http://uregina.ca/~sauchyn/geog323/279.jpg

  8. Close to Home – Enchanted Rock http://geology.uprm.edu/Morelock/images/965ERdome.jpg http://www.answers.com

  9. Plants and Animals • Wedging of roots and burrowing of animals wears away rock http://www.geol.lsu.edu/Faculty/Ferrell/class/ClarkCreek/weathering_img2.gif

  10. Close to Home – Texas Hill Country http://www.texasep.org/cpft/lugc.html

  11. Chemical Weathering • Process by which rocks are decomposed, dissolved or loosened by chemical processes to form sediment

  12. http://academic.brooklyn.cuny.edu/geology/leveson/core/topics/weathering/picture_gallery/display/graphics/yorkshire_72.gifhttp://academic.brooklyn.cuny.edu/geology/leveson/core/topics/weathering/picture_gallery/display/graphics/yorkshire_72.gif

  13. http://cse.cosm.sc.edu/erth_sci/Soil/ss12_2.jpg

  14. http://www.geol.lsu.edu/Faculty/Ferrell/class/ClarkCreek/weathering_img3.gifhttp://www.geol.lsu.edu/Faculty/Ferrell/class/ClarkCreek/weathering_img3.gif

  15. Erosion • The removal of weathered rocks by the action of: • Water • Wind • Ice • Gravity

  16. Water Erosion http://www.greenpeace.org/raw/image_full/russia/en/photosvideos/photos/trees-can-stop-water-erosion

  17. Close to Home – Canyon Lake After the Flood http://www.cceo.org/gorgesite/index.htm

  18. Close to Home – Beach Erosion Three feet a year in some places! http://tamusystem.tamu.edu/systemwide/06/01/photos/erosion.jpg

  19. Wind Erosion http://www.helsinki.fi/~jhyvonen/PB/M/wind%20erosion%202-pp.JPG

  20. http://www.uwsp.edu/geo/faculty/ritter/geog101/textbook/images/lithosphere/eolian/wind_erosion_New_Mexico_p0772931600_NRCS.jpghttp://www.uwsp.edu/geo/faculty/ritter/geog101/textbook/images/lithosphere/eolian/wind_erosion_New_Mexico_p0772931600_NRCS.jpg

  21. http://www.ram.org/pictures/sights/oahu_san_diego/cabrillo_erosion_1.gifhttp://www.ram.org/pictures/sights/oahu_san_diego/cabrillo_erosion_1.gif

  22. Ice Erosion http://www.swisseduc.ch/stromboli/etna/etna00/etna0002photovideo/icons/f20.jpg

  23. http://www.sciencedaily.com/images/2005/12/051211220547.jpg http://chandi.smugmug.com/photos/26411520-L.jpg

  24. Gravity http://www.mariposacounty.org/fire/images/images%202006/web%20140%20rock%20slide%207-4-06%20004.jpg

  25. http://people.hofstra.edu/faculty/j_b_bennington/ny_geology/adirondacks/adirondacks-Images/10.jpghttp://people.hofstra.edu/faculty/j_b_bennington/ny_geology/adirondacks/adirondacks-Images/10.jpg

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