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Physical Weathering - Environmental Geology - Lecture Slides, Slides of Earth Sciences

KLE Academy of Higher Education and Research Earth Sciences

In these Lecture Slides, the Lecturer covered the following basic concepts of Environmental Geology : Physical Weathering, Unusual Behavior, Important Property, Wedge, Freezes and Expands, Shatters the Rock, Repeats the Process, Temperatures, Adequate Moisture, Presence of Pathways

Typology: Slides

2012/2013

Uploaded on 07/23/2013

kazmi 🇮🇳

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Physical Weathering

• Frost wedging (or freeze-thaw)

– Works because water expands when it freezes

• This is unusual behavior

• Very important property

– Water acts as a wedge

• Works its way into cracks in the rocks

• Freezes and expands

•Shat

ters the rock

• Repeats the process as temperatures rise and fall

– Frost wedging works best

• Adequate moisture

• Presence of pathways into the rocks

• Cycling of temperatures above and below freezing

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