The temporal record of magmatism at Cerro Uturuncu, Bolivian Altiplano

  title={The temporal record of magmatism at Cerro Uturuncu, Bolivian Altiplano},
  author={Duncan D. Muir and Dan N. Barfod and Jon Blundy and Alison C. Rust and R. S. J. Sparks and Katherine M. Clarke},
  journal={Special Publications},
  pages={57 - 83}
Abstract Twenty-six new 40Ar/39Ar plateau ages for 23 lavas and domes from the Uturuncu volcano in the Altiplano of SW Bolivia reveal a protracted eruptive history from 1050±5 to 250±5 ka. Eruptions have been exclusively effusive, producing some 50 km3 of high-K dacites and silicic andesites. Bimodal mineral compositions, complex mineral textures, the presence of andesitic magmatic enclaves within dacites and linear chemical trends on binary element plots all indicate that magma mixing is an… 
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