GEOL 3233 Study Guide - Midterm Guide: Braided River, Chamfer, Crevasse
11 Oct 2017
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Review sheet-first one third of course-not necessarily complete. Mechanical (frost wedging) and chemical: mechanical weathering creates more surface area, giving chemical weathering more surfaces are to weather. Mineral stability and bowen"s reaction series (weathering series): weathering series is the opposite of bowen"s reaction series. Hydrolysis and oxidation: breakdown of silicate minerals to create hydrated minerals and ions in solution. Water is a good solvent due to its acidic nature and dipole/in the presence of oxygen, fe2+ oxides to fe3+, which usually produces an iron oxide weathering products: quartz and clay are clastic/ions in solution chemical sed rocks. Grain size: conglomerate 4-64+mm sand 2-4mm silt . 0625-2mm clay . 04-. 0625mm. Mean and median, sorting: good measure of distance transported and variation of energy, skewness positive access fine poor sorting, negative access coarse good sorting. Shape-rounding: distance of transport and most important composition of rock. and sphericity: source of lithology(granite good, schist poor). Surface texture: can be valuable in determining source of some sands.
