GEL 130QR Lecture Notes - Lecture 5: Georgian Lari, Soil Horizon, Building Material
Document Summary
Complete and use this guide as reference for lecture quiz 5. Rock is disintegrated and decomposed, moved to lower elevations by gravity, and carried away by water, wind, or ice. The disintegration and decomposition of rock at or near the surface of earth: discuss mechanical weathering: Frost (ice) wedging is the mechanical breakup of rock caused by the expansion of freezing water in cracks and crevices. It also occurs when lenses of ice grow larger as they attract liquid water form surrounding pores. The growth of these ice masses gradually weakens the rock, causing fracture: describe exfoliation, and the fracturing of rock due to pressure release. Chemical weathering is the process by which the internal structure of a mineral is altered by the removal and/or addition of elements. Carbon dioxide dissolved in water forms carbonic acid. The best climate for chemical weathering is warm temperatures and abundant moisture.
