Triggering explosive eruptions—The case for silicic magma recharge at Huaynaputina, southern Peru
Abstract
Recharge by mafic magma is established as a trigger of majorexplosive volcanic eruptions. However, recharge by silicic magmacan also induce perched resident magma to erupt. The evidenceof such recharge may be more cryptic than for mafic rechargeand requires detailed petrologic and geochemical study to identify.We present a study of plagioclase petrology supported by otherdata that implicates silicic-silicic magma interaction duringthe eruption and evolution of the A.D. 1600 eruption of Huaynaputina,one of the largest historical eruptions. Recharge by silicicmagma is probably more common than recognized and should beconsidered an important eruption trigger.
- Publication:
-
Geology
- Pub Date:
- May 2008
- DOI:
- 10.1130/G24380A.1
- Bibcode:
- 2008Geo....36..387D