Session: Origin and Timescales of Magmatic Systems: Discussing Ages, Rates, Transport, and Storage Processes of Magmas from the Source to Emplacement or Eruption I (AGU Fall Meeting 2018)

V33B:
Origin and Timescales of Magmatic Systems: Discussing Ages, Rates, Transport, and Storage Processes of Magmas from the Source to Emplacement or Eruption I

Session ID#: 59366

Session Description:

Magmatic systems involve a range of dynamic processes governing magma generation, ascent, emplacement, and eruption. The timescales of these processes are of paramount importance to understand the evolution of magmatic reservoirs and mush zones during crystallization, assimilation, mixing, and volatile exsolution. Depending on the ascent timescales, these processes may operate far from compositional and textural equilibrium, induced by rapidly changing environmental parameters (e.g. P,T,fO2). Rates and mechanisms of crustal emplacement or eruption, together with physical, petrological and rheological investigations of magmas, are also crucial in characterizing volcanic hazard. We welcome analytical, numerical, experimental, geophysical, and field-based studies addressing rates and timescales of magmatic processes, within the Earth and other planetary bodies. These may include radiogenic isotope dating, mineral geospeedometry, crystal size distribution, and fluid dynamics. Also, we welcome interdisciplinary studies probing the mechanisms and timescales of volcanic phenomena like pre-eruptive dynamics, magma and lava rheology, phase equilibria, and volcanic flows.

Primary Convener: Maurizio Petrelli, University of Perugia, Department of Physics and Geology, Perugia, Italy

Conveners: Stephan Kolzenburg, Ludwig Maximilians University of Munich, Department of Earth and Environmental Sciences, Munich, Germany and Kendra J Janell Lynn, University of Delaware, Earth Sciences, Newark, DE, United States

Primary Liaison: Maurizio Petrelli, University of Perugia, Department of Physics and Geology, Perugia, Italy

Chairs: Maurizio Petrelli, University of Perugia, Department of Physics and Geology, Perugia, Italy and Stephan Kolzenburg, Ludwig Maximilians University of Munich, Department of Earth and Environmental Sciences, Munich, Germany

OSPA Liaison: Kendra J Janell Lynn, University of Delaware, Earth Sciences, Newark, DE, United States

Co-Organized with:
Volcanology, Geochemistry and Petrology, and Natural Hazards

Cross-Listed:

DI - Study of the Earth's Deep Interior
MR - Mineral and Rock Physics
NH - Natural Hazards
P - Planetary Sciences

Proposed Co-Organized Session with:

MR - Mineral and Rock Physics
NH - Natural Hazards

Index Terms:

3618 Magma chamber processes [MINERALOGY AND PETROLOGY]
3640 Igneous petrology [MINERALOGY AND PETROLOGY]
8434 Magma migration and fragmentation [VOLCANOLOGY]
8439 Physics and chemistry of magma bodies [VOLCANOLOGY]

Abstracts Submitted to this Session:

The rapid ascent of low-viscosity magmas: evidence from the crystal cargo (404640)

Thomas J. Jones, Rice University, Department of Earth, Environmental and Planetary Sciences, Houston, TX, United States, Kelly Russell, University of British Columbia, Earth, Ocean, and Atmospheric Sciences, Vancouver, BC, Canada and David Sasse, University of British Columbia, Department of Earth, Ocean & Atmospheric Sciences,, Vancouver, BC, Canada

The Minutes and Hours Before Eruption: Decompression Rate Scales to Explosivity (Invited) (343535)

Terry A Plank, Columbia University, Lamont-Doherty Earth Observatory, Palisades, United States, Anna Barth, Lamont-Doherty Earth Observatory of Columbia University, Palisades, NY, United States, Megan Eve Newcombe, University of Maryland College Park, Department of Geology, College Park, MD, United States, Helge Martin Gonnermann, Rice University, Earth, Environmental and Planetary Sciences, Houston, United States and Erik Hauri, Carnegie Institution for Science, Washington, DC, United States

Petrologic Deconstruction of Magmatic Events Preceding Major Historic Eruptions of Agung Volcano, Bali, Indonesia. (462198)

Jason S Herrin, Nanyang Technological University, Earth Observatory of Singapore, Singapore, Singapore, Fidel Costa Rodriguez, Université Paris Cité, IPGP, Paris, France and Karen Fontijn, University of Oxford, Department of Earth Sciences, Oxford, United Kingdom

Assessing Magma Storage Depths and Ascent Rates for Alkaline Lavas from the Erebus Volcanic Province (Antarctica) (432506)

Ayla S Pamukcu, Woods Hole Oceanographic Institution, Geology & Geophysics, Woods Hole, MA, United States, Glenn A Gaetani, Woods Hole Oceanographic Institution, Department of Geology and Geophysics, Woods Hole, United States, Frieder Klein, Woods Hole Oceanographic Inst., Department of Geology and Geophysics, Woods Hole, United States, Véronique Le Roux, Woods Hole Oceanographic Inst, Geology & Geophysics Department, Woods Hole, United States, Paul J Wallace, University of Oregon, Department of Earth Sciences, Eugene, United States and Kenneth W W Sims, University of Wyoming, Geology & Geophysics, Laramie, United States

Inferring Magma Ascent Times and Reconstructing Conduit Processes in Rhyolitic Explosive Eruptions Using Reentrant H₂O and CO₂Gradients (Invited) (346059)

Myers Madison¹, Paul J Wallace², Colin J N Wilson³, James M Watkins² and Yang Liu⁴, (1)Montana State University, Bozeman, United States, (2)University of Oregon, Department of Earth Sciences, Eugene, United States, (3)Victoria University of Wellington, School of Geography, Environment and Earth Sciences, Wellington, New Zealand, (4)Univ Tennessee, Knoxville, TN, United States

Along Strike Variation in Eruptive and Decompression Rates for Rhyolite-Obsidian Domes, South Sister Volcano, OR (414951)

Laura E Waters, Sonoma State University, Geology, Rohnert Park, CA, United States and Benjamin James Andrews, National Museum of Natural History, Smithsonian Institution, Mineral Sciences, Washington, United States

Magma transfer processes in the NE Japan arc: insights from volcanic eruption records combined with crustal ambient noise tomography (343457)

Georg F Zellmer¹, Kai-Xun Chen², Yuancheng Gung², Ban-Yuan Kuo³ and Takeyoshi Yoshida⁴, (1)Massey University, Volcanic Risk Solutions, Palmeston North, New Zealand, (2)Department of Geosciences, National Taiwan University, Taipei, Taiwan, (3)Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan, (4)Graduate School of Science, Tohoku University, Sendai, Japan