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Basaltic andesite

From Wikipedia, the free encyclopedia

Basaltic andesite in the Cascade Range
Basaltic andesite in the Cascade Range

Basaltic andesite is a volcanic rock containing about 55% silica. It is distinct from basalt and andesite in having a different percentage of silica content. 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 of South America.[3]

References

  1. ^ "Glossary for the Geology of Mount Shasta". Archived from the original on 2010-03-14.
  2. ^ 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 (ed.). Geologic and tectonic development of the Caribbean plate boundary in northern Central America. Geological Society of America. p. 161.
  3. ^ 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. (eds.). 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.


This page was last edited on 1 October 2019, at 04:18
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