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Copy Of Glacial Erosion
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3. Striations on Glacially Scoured Rock Source: http://www.bgrg.org/pages/education/alevel/coldenvirons/Lesson%2010.htm
4. Meltwater stream emerging from the snout of a glacier – the milky appearance is due to rock flour Source: http://www.bgrg.org/pages/education/alevel/coldenvirons/Lesson%2010.htm
5. A boulder dislodged by the process of plucking Source: http://gemini.oscs.montana.edu/~geol445/hyperglac/eroproc1/plucking.htm
6. KEY: Factors related to presence / characteristics of debris Factors related to the ice FACTORS AFFECTING RATES OF GLACIAL ABRASION GLACIAL ABRASION Relative hardness of particles and bedrock Ice thickness Basal Water Pressure Movement of debris to the base Sliding of Basal Ice Removal of fine debris Debris size and shape Presence of Basal Debris Concentration of Basal Debris Velocity Other factors
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9. Diagram showing theoretical relationship between rates of abrasion, ice velocity and pressure Source: http://www.bgrg.org/pages/education/alevel/coldenvirons/Lesson%2010.htm