Chapter 5-Weathering and Soils

linked student papers
weathering
          Soils- Marti Stoner  (Spring 2006)
          Soil pH- Tianya Shemanski  (Fall 2007)
          Sacred Soils- Joseph Turcotte  (Fall 2007)
          Worms- Sean Harvey  (Fall 2007)
          Arches National Park- Mary Higgins (Spring 2007)
          Rezoning of America's Farmland-
                       Adam Hansen (Spring 2008)

VOCABULARY

weathering vs. erosion

mechanical (physical) weathering
  mass wasting
  talus and talus slope
  frost wedging
  unloading
  sheeting
  exfoliation
  joints
  thermal expansion
  root pressure
  abrasion from rivers
  abrasion from glaciers
  sandblasting
  meteorite impacts
  salt wedging
  earthquakes (tectonics)

chemical weathering
  dissolution
  carbonic acid (carbon dioxide and water)
  oxidation
  acids
  hydrolysis

primary (igneous) minerals
  feldspars
  micas
  olivene
  pyroxene
  amphibole
  quartz

secondary (sedimentary) minerals
  calcite
  dolomite
  gypsum
  salt
  iron oxides
  clay
  silica (quartz and opal)

saprolite/ sap rock

spheroidal weathering

variations in weathering rates

regolith

soil
  A horizon- zone of leaching
  B horizon- zone of accumulation
  C horizon- broken rock

pedalfer

pedocal

hardpan

caliche

laterite

bauxite

What are the principal agents of weathering in the Sierra Vista area?