4-3. weathering, erosion, transportation and sedimentation
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4-3. weathering, erosion, transportation and sedimentation. 4-3-1 . Weathering Breakdown of rocks (minerals) and others on the surface of water (due to the surface conditions) Physical (mechanical), chemical, (biotic) weathering. Physical weathering –due to physical forces Temperature change - PowerPoint PPT PresentationTRANSCRIPT
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4-3. WEATHERING, EROSION, TRANS-PORTATION AND SEDIMENTATION4-3-1. Weathering
• Breakdown of rocks (minerals) and others on the surface of water (due to the surface conditions)
• Physical (mechanical), chemical, (biotic) weathering
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• Physical weathering –due to physi-cal forces• Temperature change• Freezing (frost wedging)• Pressure change• Hydraulllic action• Mineral growth• Others: plant roots etc.
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http://regentsearth.com/ILLUSTRATED%20GLOSSARY/Ice-Root%20Wedging.htm
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http://teach.albion.edu/jjn10/physical-weathering/
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http://teach.albion.edu/jjn10/physical-weathering/
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http://teach.albion.edu/jjn10/physical-weathering/
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• Chemical weathering – through chemical reactions• Hydrolysis• Leaching• Dissolution• Oxidation
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Weathering of limestone. Youngwol
http://blog.naver.com/PostView.nhn?blogId=daphnech&logNo=60111108205&viewDate=¤tPage=1&listtype=0#
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Parent is unknown. Kaolinite querries. Taebag
http://blog.naver.com/PostView.nhn?blogId=sanijeil&logNo=80108899859
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4-3-2. Erosion, Transportation, and Sedimentation
Media
• Water (Streams)• Wind• Ice
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Spoil tip in Rummu, Estonia. Hillside is covered with rills and gullies due to erosion processes caused by rainfall.
http://en.wikipedia.org/wiki/Erosion
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Árbol de Piedra, a rock formation in the Altiplano, Bolivia sculpted by wind erosion.
http://en.wikipedia.org/wiki/Erosion
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Glacial landforms.
http://www.eoearth.org/view/article/162987/
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Types of Sediment Loads Carried by Streams:Dissolved load, Suspended load, Bed load
http://dc363.4shared.com/doc/00dWlveh/preview.html
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Hjulström-Sundborg Diagram
http://en.wikipedia.org/wiki/Sediment_transportation#Settling_velocity
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Nile delta
http://bittooth.blogspot.kr/2009/08/nile-guardian-and-disaster-without.html
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Deep Springs Lake, eastern California. As the lake dries, it leaves behind evaporites. Springs issue from a fault zone near the bottom of the photo.
http://pages.uoregon.edu/millerm/playa.html
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Yellow dust from China
http://acurx.tistory.com/1
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Lateral and terminal moraines of a valley glacier, Bylot Island, Canada.
http://nsidc.org/cryosphere/glaciers/gallery/moraines.html