Rifting and recharge as triggers of the mixed basalt–rhyolite Halarauður ignimbrite eruption (Krafla, Iceland)

• Published in: Contributions to Mineralogy and Petrology
• Main Authors: Rooyakkers, S. M., Stix, J., Berlo, K., Morgavi, D., Petrelli, M., Rusiecka, M. K., Barker, S. J., Charlier, B. L. A., Neave, D. A., Vetere, F. P., Perugini, D.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2022
• Subjects: Krafla; Icelandic volcanism; Magma mixing; Halarauður eruption; Rifting; Iceland
• Online Access: http://hdl.handle.net/11365/1194405; https://doi.org/10.1007/s00410-021-01881-7; https://rdcu.be/cIUDs

We present a petrologic study of the ca. 110 ka Halarauður eruption (7 ± 6 km3 magma), associated with collapse of Krafla caldera in northeast Iceland. Whole-rock compositions of juvenile Halarauður products span a continuous range between quartz tholeiite basalt (50.0 wt% SiO2, 5.0 wt% MgO; Mg# 42)...