GGR201H1 Chapter Notes - Chapter 3,4: Regolith, Saprolite, Parent Material
Document Summary
Chapter 3: weathering and soils: thin layer of mechanically broken and chemically altered rock, mixed with living and dead organic material defines transition from rocky interior to gaseous atmosphere up parent material) Produced by weathering (chemical or physical alteration of primary minerals that make. Changes chemical conditions of environment: bioturbation: biologically mediated mixing. Regolith can be transported from other areas. Regolith properties directly influence distribution of geomorphological processes and the. Rate of regolith production influenced by plants and animals. Forms upper part of the regolith where present. Result of physical, chemical, biological processes that alter appearance and properties of parent material on which soil is developed: presence, amount, and phase of water influence patterns and rates of chemical and physical weathering. Differences in precipitation and temperature control magnitude and relative importance of physical and chemical weathering processes: higher temperatures promote more chemical reactions, weathering influenced by topography.
