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Casa Colorada (volcano)
Casa Colorada is a dacitic volcanic dome complex erupted 17 million years ago. It has a volume of . The complex formed in three stages, involving a tuff ring, lava domes and dacitic lava flows. It is constructed on red beds and a basement of Ordovician age. The main dome is dated 17.3 mya by potassium–argon dating. The main minerals are biotite, hornblende, feldspar and quartz; oxide minerals are also present.〔
== See also ==
*Altiplano–Puna volcanic complex
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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