Mais conteúdo relacionado Semelhante a Weathering, Erosion, Deposition, and Karst Topography (20) Mais de rebelbrindley (20) Weathering, Erosion, Deposition, and Karst Topography2. 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)
7. 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
12. Karst Topography
• Occurs in limestone bedrock
• limestone easily weathers
chemically (carbonation) by
weak acids in groundwater
• landforms created:
–caverns
–sinkholes
–disappearing rivers
17. Weathering is a slow process
• Fastest when
–warm, wet climate
–big temperature changes
–steep slopes
–little vegetation