Lec18 - University of California, Berkeley Civil...

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University of California, Berkeley Professor Ken Johnson Civil Engineering 70 Engineering Geology Civil Engineering 70 Lecture 18 10/30/07 CE 70 Field Trip (Nov 2) Meet at 8:30am @ Evans Hall Bus Stop Bring: Warm clothes, sturdy shoes, lunch, camera, sunscreen, notebook Assignment (Due Nov 20) One Page Memorandum To: Ken Johnson From: Raymond Leung Date: November 2 nd , 2007 Subject: Geology Field Trip Describing favorite stop and why Geologic Features of Interest What You Learned Snow o Snow 90% air o Granular ice 50% air o Firn 20% to 30% air o Glacial Ice 20% air as bubbles Glaciers Large masses of ice on land that show evidence of motion o Two Types Continental Glaciers Can be 5 km thick Such weight can cause the lithosphere to slump Antarctica o Thins over the water, up to 3 km thick over land o Sentinel range actually juts out of the glacier Valley Glaciers Glaciers in Valleys Has a U-shaped erosion path Laminar flow
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Lec18 - University of California, Berkeley Civil...

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