Weathering and Erosion
Weathering: break-up of rox
from exposure to atmosphere
• A)mechanical: break into
smaller pieces w/o changing
composition...
Frost Action
Plant Growth
B) Chemical weathering: rock
changes into a different substance
• Hydrolysis: rock reacts
w/water
–mica clay
• Oxidation:r...
Oxidation
Carbonation
Carbonation: Acid Rain
Karst Topography
Karst Topography
• Occurs in limestone bedrock
• limestone easily weathers
chemically (carbonation) by
weak acids in groun...
Cavern
Stalactites
Stalagmites
Sinkholes
Weathering is a slow process
• Fastest when
–warm, wet climate
–big temperature changes
–steep slopes
–little vegetation
Erosion: movement of
weathered material
• Gravity
• ice
• water
• wind
Gravity: Landslide
Gravity: Talus
Water Erosion
Water Erosion
Wind Erosion
Deposition:
Weathering, Erosion, Deposition, and Karst Topography
Weathering, Erosion, Deposition, and Karst Topography
Weathering, Erosion, Deposition, and Karst Topography
Weathering, Erosion, Deposition, and Karst Topography
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Weathering, Erosion, Deposition, and Karst Topography

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Weathering, Erosion, Deposition, and Karst Topography

  1. 1. Weathering and Erosion
  2. 2. Weathering: break-up of rox from exposure to atmosphere • A)mechanical: break into smaller pieces w/o changing composition –frost action –plant growth –abrasion (rubbing)
  3. 3. Frost Action
  4. 4. Plant Growth
  5. 5. B) Chemical weathering: rock changes into a different substance • Hydrolysis: rock reacts w/water –mica clay • Oxidation:reacts w/oxygen –-rust • carbonation: reacts w/carbon dioxide
  6. 6. Oxidation
  7. 7. Carbonation
  8. 8. Carbonation: Acid Rain
  9. 9. Karst Topography
  10. 10. Karst Topography • Occurs in limestone bedrock • limestone easily weathers chemically (carbonation) by weak acids in groundwater • landforms created: –caverns –sinkholes –disappearing rivers
  11. 11. Cavern
  12. 12. Stalactites Stalagmites
  13. 13. Sinkholes
  14. 14. Weathering is a slow process • Fastest when –warm, wet climate –big temperature changes –steep slopes –little vegetation
  15. 15. Erosion: movement of weathered material • Gravity • ice • water • wind
  16. 16. Gravity: Landslide
  17. 17. Gravity: Talus
  18. 18. Water Erosion
  19. 19. Water Erosion
  20. 20. Wind Erosion
  21. 21. Deposition:

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