GEOG 101 Chapter Notes - Chapter 9: Metamorphic Rock, Igneous Rock, Silicate Minerals
16 May 2017
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Igneous rock - a rock formed by solidification of molten material (magma) chemical reactions that modified a preexisting rock. Intermediate rocks - in between felsic and mafic rocks: diorite (coarse, andesite (fine, tuff - volcanic rock composed of a mix of volcanic ash, pumice, crystals, and rock fragments. 9. 8: factors influences landscape development , parent materials - some are hard or soft, orientation of slope, climate, rock beds - also known as bedding, are layers in sedimentary rock. 9. 9: physical weathering - the physical breaking apart of rocks, soils, and other materials that are exposed to the environment, near-surface fracturing. Increase their roundness: sort the clasts by size. Inactive dunes are called stabilized dunes: wind streaks, loess, rock varnish or desert varnish - dark coating developed on undisturbed rocks, consisting of iron-oxide and manganese oxide, desert pavement - stones that have become concentrated on the surface.
