V11F:
The Secret Life of Minerals: Reconstructing Pre-eruptive Magma Storage and Ascent Dynamics I


Session ID#: 7726

Session Description:
The final stages of magmatic evolution taking place in shallow crustal reservoirs and conduits play a critical role in the style and frequency of volcanic activity. Understanding the timescales and processes involved in triggering eruptions remains at the forefront of volcanological research. Minerals hold the key to unlocking the history of volcanic systems, because their compositions and textures depend on the pressures, temperatures, and compositions of host liquids. In recent decades, the development and increasing availability of powerful analytical and experimental techniques have allowed researchers to extract information hidden within crystals. Tools for estimating magmatic variables (e.g., storage depths, residence times, ascent rates, timescales of magma recharge) are constantly evolving; however refining their accuracy is critical. We invite proposals that illustrate how the compositions and/or textures of mineral phases are being used to reconstruct pre-eruptive magmatic conditions and the timescales of magmatic processes.
Primary Convener:  Sarah Henton De Angelis, University of Liverpool, Liverpool, L69, United Kingdom
Conveners:  Brandon L Browne, Humboldt State University, Geology, Arcata, CA, United States and Jessica F Larsen, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States
Chairs:  Brandon L Browne, Humboldt State University, Geology, Arcata, CA, United States and Jessica F Larsen, University of Alaska Fairbanks, Geophysical Institute, Fairbanks, AK, United States
OSPA Liaison:  Brandon L Browne, Humboldt State University, Geology, Arcata, CA, United States
Index Terms:

1036 Magma chamber processes [GEOCHEMISTRY]
1042 Mineral and crystal chemistry [GEOCHEMISTRY]
8410 Geochemical modeling [VOLCANOLOGY]
8413 Subduction zone processes [VOLCANOLOGY]

Abstracts Submitted to this Session:

The Influence of Crystal Mush on Magmatism Under Arc Volcanoes Recorded in Zircon from the Lassen Volcanic Center, California and Mount Hood, Oregon (Invited) (72549)
Erik W Klemetti1, Michael A Clynne2, Adam JR Kent3, Elisabeth M Bertolett4, Lindsey D Hernandez4 and Matthew A Coble5, (1)Denison University, Department of Earth & Environmental Sciences, Granville, United States, (2)USGS, Menlo Park, CA, United States, (3)Oregon State University, College of Earth, Ocean, & Atmospheric Sciences, Corvallis, OR, United States, (4)Denison University, Granville, OH, United States, (5)Stanford University, Stanford, CA, United States
Dynamic Heating and Decompression Experiments on Dacite and Rhyolite Magmas (Invited) (72438)
Benjamin James Andrews, Smithsonian Institution, Global Volcanism Program, Washington, DC, United States, Laura E Waters, University of Michigan Ann Arbor, Ann Arbor, MI, United States and Stephanie B Grocke, National Museum of Natural History, Washington, DC, United States
Are All Obsidians Super-Heated? Insights from Observations of Crystallization Kinetics in Experiments on Glass Mountain Obsidians (Long Valley, CA) (67493)
Laura E Waters, Smithsonian Institution, National Museum of Natural History, Washington, DC, United States and Benjamin James Andrews, National Museum of Natural History, Smithsonian Institution, Mineral Sciences, Washington, United States
Change in Magma Dynamics at Okataina Rhyolite Caldera revealed by Plagioclase Textures and Geochemistry (59813)
Philip A R Shane, University of Auckland, School of Environment, Auckland, New Zealand
Deciphering magma histories through phosphorus zoning in olivine (69806)
Özlem Ersoy1, Igor Nikogosian1, Paul Robert David Mason2 and Manfred van Bergen1, (1)Utrecht University, Utrecht, Netherlands, (2)Utrecht University, Utrecht, 3584, Netherlands
Apatite: A New Tool For Understanding The Temporal Variability Of Magmatic Volatile Contents (71976)
Michael James Stock1, Madeleine Humphreys2, Victoria Smith3, David M Pyle1 and Roberto Isaia4, (1)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (2)University of Durham, Department of Earth Sciences, Durham, United Kingdom, (3)University of Oxford, Oxford, United Kingdom, (4)INGV Naples, Osservatorio Vesuviano, Naples, Italy
The Year Leading to a Supereruption (74160)
Guilherme A R Gualda, Vanderbilt University, Earth and Environmental Sciences, Nashville, TN, United States
Magma Mixing Chronometry: Quantitative 3D Tomographic Analysis of Biotite Breakdown in Heating Experiments (74173)
Stephanie B Grocke, Smithsonian Institution, National Museum of Natural History, Washington, DC, United States, Benjamin James Andrews, Smithsonian NMNH, Mineral Sciences, Washington, DC, United States, Michael Manga, University of California, Berkeley, Earth and Planetary Science, Berkeley, United States and Erin Todd Quinn, Humboldt State University, Arcata, CA, United States

See more of: Volcanology, Geochemistry and Petrology