Basaltic Andesite Information
Basaltic andesite is a black volcanic rock containing about 55% silica. Minerals in basaltic andesite include olivine, augite and plagioclase.[1] Basaltic andesite can be found in volcanoes around the world, including in Central America[2] and the Andes.[3] Basaltic andesite is common in the volcanoes near McKenzie Pass in Oregon, United States.[4]
References
- ^ "Glossary for the Geology of Mount Shasta". http://www.siskiyous.edu/shasta/geo/glo.htm.
- ^ Jordan, B.R.; Sigurdsson, H., Carey, S., Lundin, S., Rogers, R.D., Singer, B., Barquero-Molina, M. (2007). "Petrogenesis of Central American Tertiary ignimbrites and associated Caribbean Sea tephra". In Mann, Paul. Geologic and tectonic development of the Caribbean plate boundary in northern Central America. Geological Society of America. p. 161.
- ^ Kay, Suzanne Mahlburg; Copeland, Peter (2006). "Early to middle Miocene backarc magmas of the Neuquén Basin: Geochemical consequences of slab shallowing and the westward drift of South America". In Kay, Suzanne Mahlburg; Ramos, Victor A.. Evolution of an Andean margin: a tectonic and magmatic view from the Andes to the Neuquén Basin (35 degrees-39 degrees S lat). Geological Society of America. p. 209.
- ^ "Dee Wright Observatory". United States Geological Survey. http://vulcan.wr.usgs.gov/Volcanoes/Oregon/HighCascades/dee_wright_observatory.html. Retrieved 2011-01-01.
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Categories: Basalt | Volcanic rocks | Igneous rocks
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