II. Using geophysics and geochemistry to probe magmatism and eruption processes  

II.5 Using geochronology and quantitative petrology to understand the P-T-t-X evolution of magmatic systems leading up to volcanic eruptions

Georg F. Zellmer, Massey University; g.f.zellmer@massey.ac.nz
Abigail Barker, Uppsala University; abigail.barker@geo.uu.se
Martin Danišík, Curtin University, Perth; m.danisik@curtin.edu.au
Aurelie Germa, University of South Florida; agerma@usf.edu
David A. Neave, Leibniz University of Hannover; d.neave@mineralogie.uni-hannover.de

Progress in geochemical, microanalytical and geochronological techniques has recently enabled geoscientists to accurately time pre- and syn-eruptive variations in magma depths, temperatures and compositions on timescales of minutes to millennia. Hence, it is possible to decipher the temporal and spatial histories of magmatic evolution, from melt generation through ascent to eruption and deposition, and to elucidate the details of potential magma mixing and contamination during intermittent crustal storage. Data have now become sufficiently precise to be integrated with a range of geophysical signals used to monitor volcanic unrest, and may therefore contribute significantly to our understanding of volcanic hazards and their mitigation. Further, integration of age data with geomorphological features allows constraints to be put on volcanic output and erosion rates, and to identify cyclic patterns in active volcanism.
We invite presentations that (1) evaluate the performance of existing and present novel (i) geochronometers, (ii) thermobarometers, and (iii) hygrometers; (2) integrate such data with field investigations and complementary information from other disciplines (e.g. geomorphology, geophysics, volcano monitoring); and (3) detail how such integration can inform volcanic hazards and improve efforts of their mitigation. We welcome studies that deal with any or all of the above, and particularly encourage cross-disciplinary contributions.