GEO 1111 Study Guide - Final Guide: Accumulation Zone, Ice Shelf, Permafrost

• School: University of Ottawa
• Department: Geology
• Course: GEO 1111
• Professor: Robert Jack Cornett

Document Summary

Chemical breaking chemical bonds burning gas. Thermo-mechanical potential energy hydro dams kinetic energy water falls or air move. Used the most for space heating at 63% Uses physical forces breaking rocks into smaller pieces. Increases surface area = as rocks break they go into smaller pieces which more surface area is exposed. Frost wedging: water goes into the cracks and freezes enlarging the cracks, lenses of ice grow larger as they attract liquid water from surrounding areas. Sheeting/unloading: large masses of igneous rock are exposed by erosion and glaciation and concentric slabs break lose. Exfoliation dome is formed after continued weather causing slabs to separate and spall off. Joints are fractures produced by contraction during crystallization of magma. Biological activity plant roots grow into fractures in a rock, causing the cracks to expands, burrowing animals break down rock by moving fresh material to the surface, enhancing physical and chemical weathering. Chemicals transform of rock into new compounds.