GEOG 101 Lecture Notes - Lecture 17: Clay Minerals, Halite, Chemical Reaction
Document Summary
Types of chemical weathering processes (hot and wet) Chemical reaction between water which is slightly acidic and a mineral. Metal cations are selectively replaced within the crystal lattice. End product is often a clay mineral. When certain metallic elements combine with oxygen to create softer, Is very effective when dissolved in water. Red/brown coloration often due to oxidation of iron. Rock salt is formed by evaporation of brine. The destruction can be achieved by adding water. Pure water does not exist in nature rainwater reacts with co2 in atmosphere forms weak carbonic acid solution. Carbonic acid reacts with minerals that contain ca, mg, k, and na. Bacteria living on rock surfaces can contribute to weathering. Lichens can be linked to a range of chemical and physical weathering. No weathering would mean no soil, no people and worse still, no plants. Unaltered primary materials that are effectively immune to specific. Weathering products of primary minerals e. g.
