Eruption ages of Las Tres Vírgenes volcano (Baja California): A tale of two helium isotopes

  title={Eruption ages of Las Tres V{\'i}rgenes volcano (Baja California): A tale of two helium isotopes},
  author={Axel K. Schmitt and Daniel Fritz Stockli and Samuel Niedermann and Oscar M. Lovera and Brian P. Hausback},
La Virgen tephra is the product of the youngest and most voluminous explosive eruption of Las Tres Vírgenes volcano (Baja California). Combined UeTh and (UeTh)/He zircon dating allows accurate correction for uranium-series disequilibrium, and yields an eruption age for La Virgen tephra of 30:7þ1:8 1:4 ka (2s). No difference in eruption ages was found between samples from proximal and distal La Virgen tephra. A previously undated tephra south of Las Tres Vírgenes volcano yielded UeTh and (UeTh… CONTINUE READING


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