Weathering and Soils - Earth Science - Lecture Slides, Slides of Earth Sciences

Download Weathering and Soils - Earth Science - Lecture Slides and more Slides Earth Sciences in PDF only on Docsity! Earth Science Weathering and Soils docsity.com The Rock Cycle docsity.com Differential Weathering and Erosion docsity.com Differential Weathering and Erosion docsity.com Mass-Wasting Movement of Large Amounts of Material Downhill under Gravity • Creep • Mudflows • Slump • Rockfalls • Avalanches docsity.com Spheroidal Weathering and Exfoliation docsity.com Spheroidal Weathering docsity.com Joints and Spheroidal Weathering docsity.com Soil Horizons and Profiles Soil Horizons • Layers in Soil • Not Deposited, but Zones of Chemical Action Soil Profile • Suite of Layers at a Given Locality docsity.com Principal Soil Horizons • O - Organic (Humus) Often Absent • A – Leaching (Clay Removed) • E - Bleached Zone - Only in Certain Soils • B – Accumulation – Absent in Young Soils – Distinct in Old Soils – Al, Fe, Clay (Moist) – Si, Ca (Arid) • C - Parent Material (bedrock) docsity.com Soil Classification This may be the most difficult classification problem in science because of the many factors involved. Varied Bases for Classification • Parent Material • Special Constituent Materials • Maturity • Structure • Climate & Vegetation Multiple Objectives • Scientific – Genesis & Evolution • Agricultural – Fertility – Most Effective Use • Engineering – Slope Stability – Expansion and Shrinkage – Stability of Excavations docsity.com Soils of the U.S. docsity.com Typical Soil Profile (Spodosol) docsity.com Aridisol, Kuwait docsity.com