GLY 2010C Lecture Notes - Lecture 13: Ultramafic Rock, Igneous Rock, Volcanic Ash
Document Summary
Rhyolite a pale fine-grained volcanic rock of granitic composition, typically porphyritic in texture. Tabular sheets of igneous rock that run parallel to the country rock. A small discordant body of intrusive igneous rocks. An igneous rock with with low silica content and rich minerals such as olivine. The internal friction of a fluid which makes its resist flowing, so high viscosity larger amount of friction required to flow. Very small solid particles ejected from a volcano during an eruption. Arkrose a coarse-grained sandstone that is at least 25 percent feldspar. Bioclastic sediment remains from shell fragments or similar organic remains. The disturbance of the soil/sediment by living things. A class of sedimentary rocks made up of carbonate minerals. Sediments are changed into rock by new minerals sticking the grains together. Sediment formed by precipitation of minerals from solution in h2o.
