GEOG 120 Lecture Notes - Lecture 13: Mass Wasting, Chemical Decomposition, Carbonation
Document Summary
Many of the processes are relatively rapid. Total of all processes whereby the exposed rocks of continents are worn down and the resulting. Today: crustal deformations; rock weathering and mass wasting processes; karst landscapes. Not mutually exclusive, can and often happen concurrently. Denudation typically slower sediments are redistributed over earth"s surface. Sum of processes acting at or near the surface to cause the physical disintegration and the chemical decomposition of rock to produce regolith. Mechanical break up of bedrock into smaller particles though physical forces acting at or near the surface. Frost action/ crystallization (growth of dissolved minerals as water evaporates) Biological activity (ie: tree roots in small fractures that expand and pry the fracture open) Slabs or sheets parallel to the surface may occur. Also occurs in tunnels regolith- disorganized rock , byproducts of weathering, often misused interchangeably with sediments. Leads to caverns, sinkholes, valleys produced by collapsed caverns. Dissolution the rock minerals dissolve in water.
