Caldera; Volcanic hazards; Silicic magma; Magma reservoirs
Ganne J. Bachmann O. and Feng X. (2018), Deep into magma plumbing systems: Interrogating the crystal cargo of volcanic deposits, in Geology
, 46, 415.
Tecchiato V. Gaeta M. Mollo S. Scarlato P. Bachmann O. (2018), Petrological constraints on the high-Mg basalts from Capo Marargiu (Sardinia, Italy): Evidences of cryptic amphibole fractionation in polybaric environments, in ournal of Volcanology and Geothermal Research
, 349, 31.
Aravena A. Gutiérrez F. J. Parada M. A. Payacán Í. Bachmann O. (2017), Compositional zonation of the shallow La Gloria pluton (Central Chile) by late-stage extraction/redistribution of residual melts by channelization, in Lithos
, 284-285, 578.
Karakas O. Degruyter W. Bachmann O. Dufek. J (2017), Lifetime and size of shallow magma bodies controlled by crustal-scale magmatism, in Nature Geoscience
, 10, 446.
Fiedrich A. Bachmann O. Ulmer P. Deering C. Kunze K. and Leuthold J. (2017), Mineralogical, geochemical, and textural indicators of crystal accumulation in the Adamello Batholith (Northern Italy):, in American Mineralogist
, 102, 2467.
Bachmann O. Huber C. (2016), Silicic magma reservoirs in the Earth’s crust:, in American Mineralogist
, 101, 2377.
Forni F. Bachmann O. Mollo S. De Astis G. Gelman S. E. and Ellis B. S. (2016), The origin of a zoned ignimbrite: insights into the Campanian Ignimbrite magma chamber (Campi Flegrei, Italy), in Earth and Planetary Science Letters
, 449, 259-271.
Mollo S. Forni F. Bachmann O. Blundy J. D. De Astis G. and Scarlato P. (2016), Trace element partitioning between clinopyroxene and trachy-phonolitic melts: A case study from the Campanian Ignimbrite (Campi Flegrei, Italy), in Lithos
, 252-253, 160.
Deering C. D. Keller B. Schoene B. Bachmann O. Beane R. and Ovtcharova M (2016), Zircon record of the plutonic-volcanic connection and protracted rhyolite melt evolution, in Geology
, 44, 267.
Leuthold J. Lissenberg C. J. O’Driscoll. B. Karakas O. Falloon T. Klimentyeva D. N. Ulmer, Partial melting of the lower oceanic crust at spreading ridges, in Frontiers in Earth Science
, 6(15), 1.
This proposal requests a funding extension for a long-term initiative to constrain the development and evolution of large magma reservoirs in the Earth’s crust. Magma reservoirs control igneous differentiation (including the liberation of fluids leading to ore deposits), the fluxes of heat and mass between mantle, crust and atmosphere, and the eruptive volumes potentially remobilized during volcanic eruptions. Hence, focusing on their physico-chemical evolution is key for a number of important questions in Earth Sciences. The goals of the first leg of this long-term initiative were (1) to compile field, petrological, geochemical and mineralogical data from units in several young volcanic systems with potential for large explosive events, in different tectonic settings, in order to determine petrological patterns that help predict the development of a large, eruptible magma pools in the upper crust and (2) to run inverse and forward models of magma reservoir evolution to illuminate potential outcomes for a given set of conditions. These goals were largely reached during this first part of this project (over the last 3 years), but additional efforts should be invested in the modeling part. Hence, work over the next two years will involve: (a) the continuation of Francesca Forni’s project on silicic magmas erupted in Italian Provinces (with specific focus on the Campanian ignimbrite and post-caldera units in the Campi Flegreii area), and (b) the continuation of the Mt St. Helens project, with focus on modeling the thermal emplacement of magmas in the Earth’s crust (project of Maren Wanke, further developed by a post-doctoral researcher, Dr. Ozge Karakas).