Chapter 17.2

Chapter 17.2 - Chapter 17.2 Glacial Landforms I.a Erosional...

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Chapter 17.2 Glacial Landforms I.a. Erosional Landforms Created by Alpine Glaciation I.a.i. As cirque walls erode away--> arêtes : sharp ridges form, dividing adjacent cirque basins--> becomes sawtooths : serrated ridges in glaciated mountains I.a.ii. Col : saddle-like depression or pass when two eroding cirques reduce an arête I.a.iii. Horn : or pyramidal peak results when several cirque glaciers gouge an individual mountain summit from all sides I.a.iv. Bergschrund : forms when crevasse or wide crack opens along headwall of a glacier I.a.v. Preglacial: v-shaped, Glaciated valleys: u-shaped I.a.vi. Physical weathering loosens rock along steep cliffs--> falls to form talus slopes along valley sides and retreating ice leaves behind transported rock as erratics I.a.vii. Tarns : small mountain lakes that form in cirques where valley glaciers originated I.a.viii. Paternoster lakes : small, circular, stair-stepped lakes formed from differing resistance of rock to glacial processes or damming by glacial
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This note was uploaded on 01/26/2012 for the course 460 476 taught by Professor Adamo during the Fall '11 term at Rutgers.

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Chapter 17.2 - Chapter 17.2 Glacial Landforms I.a Erosional...

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