Altiplano-Puna Volcanic Complex
The Altiplano-Puna Volcanic Complex (APVC) is located in the central volcanic zone of South America. Over the last ~10 million years, a magmatic flare-up has manifested in an extensive ignimbrite plateau which covers around 70,000 square kilometers with over 15,000 cubic kilometers of silicic ignimbrites and lavas that have erupted from several large calderas and source structures.
To date, my work on the APVC has primarily focused on the thermal and chemical evolution of the magma system(s) the fed series of late-pleistocene lava domes, and which represent the most recent manifestation of volcanism from a waning APVC flare-up. Research on the five domes (Chao, Chillahuita, Tocopuri, Chanka, and Chascon Runtu-Jarita) involved a number of investigations and analytical approaches including petrography, thermobarometry, Ar/Ar eruption dating, and zircon geochronology via U-Th and U-Th.
Figure 2 from Tierney et al (2016)
Figure 3 from Tierney et al (2016)
Supplemental Figure 8 from Tierney et al (2016)