GEOL 2530 Lecture Notes - Lecture 2: Siltstone, Molality, Desorption

• School: University of Manitoba
• Department: Geological Sciences
• Course: GEOL 2530
• Professor: Chow Nancy

Document Summary

Disintegration into soluble constituents residual primary minerals secondary minerals & amorphous phases. Readings from boggs (2012): freeze-thaw weathering (frost wedging, insolation weathering (thermal weathering, salt weathering, wetting & drying, stress-release weathering (sheeting, mineral alteration; biological processes. H+, oh- interaction with silicate minerals weak acid or base. + h+ e. g. 2kalsi3o8 + 2h+ + 9h2o al2si2o5(oh)4 + 4h4sio4 + 2k+ kaolinite, illite, smectite, muscovite e. g. 2camgsi2o6 + 16h+ 2ca2+ + 2mg2+ + 4h4sio4. Addition/removal h2o e. g. caso4 + 2h2o caso4: oxidation. Loss of electrons oxides, hydroxides e. g. 4fesio3 + o2 2fe2o3 + 4sio2. Loss of electrons oxides, hydroxides e. g. 4fesio3 + o2 2fe2o3 + 4sio2 e. g. 4fes2 + 15o2 + 8h2o 2fe2o3 + 8so4. Loss of electrons oxides, hydroxides e. g. 4fesio3 + o2 2fe2o3 + 4sio2 e. g. 4fes2 + 15o2 + 8h2o 2fe2o3 + 8so4 e. g. c6h12o6 + 6o2 6co2 + 6h2o: simple solution (congruent dissolution)