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The effect of gravity


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ccu erosion

ccu erosion

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  • 1. The Effect of Gravity on Erosion and Deposition Jessica Kahnk Colorado Christian University
  • 2. Read Section 4 Chapter 3• Mass movement- movement of any material downslope – Several types- some are rapid moving and others slow: • Rock Falls (rapid) • Landslides (rapid) • Mudflows (rapid) • Creep (slow)
  • 3. Rock FallsOccurs when loose rocksfall down a steep slope.• Where else have youseen this occur? 1987 rockfall near Elephant Rock at west end of Yosemite Valley (G. Hayes)• [Man seated beneath rock formation at the Upper Yosemite Fall, Yosemite National Park, Calif.].• Watkins, Carleton E., 1829-1916, photographer. CREATED/PUBLISHED [ca. 1860]
  • 4. Landslides• The sudden and rapidmovement of a largeamount of materialdownslope. title: 10. Area of landslide on eastern section of Foothills Parkway looking NE - Great Smoky Mountains National Park Roads & Bridges, Foothills Parkway, From Chilowee to Walland & from Cosby to I-40, Gatlinburg, Sevier County, TN Creator(s): Haas, David, creator Date Created/Published: 1996 ROCKFALL : Boulders at the base of the cliff broke off and fell from the rocks forming the cliff. Griggs, Gary B. and Gilchrist, John A., 1983. Geologic Hazards, Resources and Environmental Planning (second edition). Wadsworth Publishing Company, Belmont, California, USA• Where else have you seen this occur?
  • 5. Mudflow• The rapid movement ofA large mass of mud.Where else have youSeen this occur?What is most likely the cause?Description: Mailboxes sticking out of a mudflowSource: First upload from [1] 4 November 2005 in English Wikipediaby Mdhowe
  • 6. Creep • The extremely slow movement of material downslope. U.S. Geological Survey diagramPhoto (c) Andrew Alden, licensed to (fair use policy)
  • 7. What is the common link?• What do all these have in common? • Rock Falls (rapid) • Landslides (rapid) • Mudflows (rapid) • Creep (slow)• Slope• What is acting upon the angle? Gravity• What are some elements that we can enduce to speed up the erosion process?• Can we do anything to prevent erosion?
  • 8. Works Cited Holt, Rinehart & Winston. Earth’s Changing Surface. 2005. In class conclusion Click on the site below and take quiz. Repeat until scoring 100% then print score and turn in next day