玄武安山岩
玄武安山岩（英语：basaltic andesite）是一种含有约55％二氧化硅的火山岩。它与玄武岩和安山岩的不同之处在于二氧化硅含量的百分比不同。玄武安山岩中的矿物包括橄榄石、辉石和斜长石[1] 。玄武岩安山岩可在世界各地的火山中找到，包括中美洲和南美州的安第斯山脉[2][3]。
参考资料
- ^ Glossary for the Geology of Mount Shasta. （原始内容存档于2010-03-14）.
- ^ Jordan, B.R.; Sigurdsson, H.; Carey, S.; Lundin, S.; Rogers, R.D.; Singer, B.; Barquero-Molina, M. Petrogenesis of Central American Tertiary ignimbrites and associated Caribbean Sea tephra. Mann, Paul (编). Geologic and tectonic development of the Caribbean plate boundary in northern Central America. Geological Society of America. 2007: 161.
- ^ Kay, Suzanne Mahlburg; Copeland, Peter. Early to middle Miocene backarc magmas of the Neuquén Basin: Geochemical consequences of slab shallowing and the westward drift of South America. Kay, Suzanne Mahlburg; Ramos, Victor A. (编). 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. 2006: 209.
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