V057
What can pyroclasts tell us?
Session ID#: 81452
Session Description:
Pyroclasts are fragments of magma generated during volcanic eruptions and they capture information on otherwise unobservable processes that control those eruptions. Increasingly refined analyses are used to investigate physical and chemical properties of pyroclasts to determine 1) the state of magma and its dynamic evolution in the conduit, 2) the response of magma to deformation, 3) the dynamics of particle ejection, transport, and deposition. When combined with sophisticated experiments and models, those analyses improve our comprehension of volcanic phenomena and the processes driving magma migration and fragmentation, transport dynamics through the atmosphere or along the ground, and the impact of eruptions on the environment. In this session we will explore the forefront of analysis and interpretation of pyroclasts and their deposits. We welcome contributions from field and experimental volcanology, monitoring and computational modeling to build dialogue between diverse scientists about how best to decipher volcanic eruptions using pyroclasts.
Index Terms:
8428 Explosive volcanism [VOLCANOLOGY]
8434 Magma migration and fragmentation [VOLCANOLOGY]
8445 Experimental volcanism [VOLCANOLOGY]
8486 Field relationships [VOLCANOLOGY]
Primary Convener: Benjamin James Andrews, Smithsonian Institution, Global Volcanism Program, Washington, DC, United States
Conveners: Ulrich Kueppers, Ludwig Maximilian University of Munich, Earth & Environmental Sciences, Munich, Germany and Corrado Cimarelli, Ludwig Maximilians University of Munich, Earth and Environmental Sciences, Munich, Germany
Primary Liaison: Benjamin James Andrews, Smithsonian Institution, Global Volcanism Program, Washington, DC, United States
Making pumice: a post-fragmentation process? (489827)
Thomas Giachetti1, Kathleen Trafton2, Eamonn Needham2, James M Watkins2, Heather Michelle Nicholson Wright3 and James E Gardner4, (1)University of Oregon, Earth Sciences, Eugene, OR, United States, (2)University of Oregon, Eugene, OR, United States, (3)USGS, Baltimore, MD, United States, (4)University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States
Size matters: the density and texture of pumice (492486)
Kathleen Trafton, Eugene, Oregon, United States, Thomas Giachetti, University of Oregon, Earth Sciences, Eugene, OR, United States and Ricky Ede, University of Oregon, Earth Sciences, Eugene, United States
Volcanic Lightning Evidence in Ashfall Deposits: Intra-Cloud or Cloud-to-Ground Discharges? (502157)
Kimberly D Genareau1, Taylor Woods1 and Robert M Comas2, (1)University of Alabama, Department of Geological Sciences, Tuscaloosa, AL, United States, (2)University of Alabama, Department of Geography, Tuscaloosa, AL, United States
Chemical Alteration of Volcanic Ash Due to Simulated Lightning (503877)
Taylor Woods1, Kimberly D Genareau1 and Robert M Comas2, (1)University of Alabama, Department of Geological Sciences, Tuscaloosa, AL, United States, (2)University of Alabama, Department of Geography, Tuscaloosa, AL, United States
3D measurement of three-phase contact angles of melt and vapor with quartz and biotite (507048)
Wei Lin, University of Chinese Academy of Sciences, Institute of Porous Flow and Fluid Mechanics, Beijing, China, Michael Manga, University of California Berkeley, Berkeley, CA, United States, Xiaojing Fu, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, Somerville, MA, United States, Benjamin James Andrews, Smithsonian Institution, Global Volcanism Program, Washington, DC, United States and Kenneth S Befus, Baylor University, Waco, TX, United States
Flow and depositional processes of the Koya Pyroclastic Flow formed by the Kikai caldera-forming eruption at 7.3 ka (509652)
Reina Nakaoka1, Keiko Suzuki-Kanata1, Satoshi Shimizu1, Nobukazu Seama1, Katsuya Kaneko1, Koji Kiyosugi1, Tetsuo Matsuno1 and Yoshiyuki Tatsumi2, (1)Kobe University, Kobe, Japan, (2)Kobe University, Kobe Ocean-Bottom Exploration Center, Kobe, Japan
Formation of Dense Pyroclasts by Sintering of Ash Particles During the Pre-climactic Eruptions of Mt. Pinatubo in 1991 (509868)
James E Gardner, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States, Yining Wang, The University of Texas at Austin, Jackson School of Geosciences, Austin, TX, United States and Richard P Hoblitt, USGS-Cascades Volcano Observat, Vancouver, WA, United States
Stratigraphy renewal, magma chamber stratification, and conduit process of the 1815 Tambora caldera forming eruption (513868)
Indranova Suhendro1, Atsushi Toramaru1, Tomoharu Miyamoto Sr.2, Yasuo Miyabuchi Sr.3 and Takahiro Yamamoto Sr.4, (1)Kyushu University, Fukuoka, Japan, (2)Kyushu University, Earth and Planetary Sciences, Fukuoka, Japan, (3)Kumamoto University, Advanced science and technology, Kumamoto, Japan, (4)Geological Survey of Japan, Research Institute of Earthquake and Volcano Geology, Tsukuba, Japan
Particle shape-fabric analysis of PDC deposits: Extracting flow direction and shear conditions (518859)
Patrick Hale Zrelak Jr1,2, Nicholas Pollock1, Brittany D Brand3 and Damiano Sarocchi4, (1)Boise State University, Boise, ID, United States, (2)University of Oregon, Earth Sciences, Eugene, OR, United States, (3)Boise State Univ, Geosciences, Boise, ID, United States, (4)Universidad Autónoma de San Luis Potosí, Instituto de Geología, San Luis Potosí, Mexico
Deciphering the geochemical and petrological history of the mafic Curacautin ignimbrites, Llaima Volcano, Chile (520380)
Megan Walker1, Aaron A Marshall1, V. Dorsey Wanless1 and Brittany D Brand2, (1)Boise State University, Geosciences, Boise, ID, United States, (2)Boise State Univ, Geosciences, Boise, ID, United States
Secondary fragmentation of pyroclasts during Hawaiian fountaining in 2018 (522462)
Brett H. Walker, University of Hawaii at Manoa, Geology & Geophysics, Honolulu, HI, United States and Bruce F Houghton, Univ Hawaii Manoa, SOEST, Honolulu, HI, United States
Exploring eruption dynamics in 3D; textural and geochemical analysis of archetypal Ocean Island eruptive deposits, Ascension Island, South Atlantic (543142)
Bridie Verity Davies1, Matthew Andrew2, Katherine J Dobson3, Jenni Barclay1 and Richard J Brown4, (1)University of East Anglia, School of Environmental Sciences, Norwich, United Kingdom, (2)Zeiss (formally Xradia, Inc.), Pleasanton, CA, United States, (3)University of Strathclyde, Department of Earth Sciences, Glasgow, United Kingdom, (4)University of Durham, Department of Earth Sciences, Durham, United Kingdom
An Extraordinary Period of Dome Collapse at Mount Shasta, California, USA (559322)
Cynthia A Gardner1, Duane E Champion2, Robert L Christiansen2, Adam R Mosbrucker1, Scott E Graham1 and Gui G Aksit1, (1)U.S. Geological Survey, Vancouver, WA, United States, (2)USGS, Menlo Park, CA, United States
Architecture and Flow Behavior of June, July, and August 1980 Pyroclastic-flow Deposits at Mount St. Helens (561251)
James W Vallance, USGS, Vancouver, WA, United States, Peter Kokelaar, University of Liverpool, Liverpool, United Kingdom and Nico Gray, University of Manchester, School of Mathematics, Manchester, United Kingdom
The Explosivity of Intraplate Basaltic Volcanoes: New Insights from Fragmentation Experiments (573568)
Andrea Di Muro1, Ulrich Kueppers2, Lucia Gurioli3, Rebecca Carey4, Daniele Vergani4, Simon Thivet3, Elisa Medri1, Melanie Kaliwoda2, Corrado Cimarelli2 and Donald B Dingwell2, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Ludwig Maximilians University of Munich, Munich, Germany, (3)Université Clermont Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, Clermont-Ferrand, France, (4)University of Tasmania, Centre of Ore Deposits and Earth Sciences, Hobart, Australia
SO2 scavenging potential of fractured permeable rhyolitic domes (Invited) (579624)
Ana S. Casas1, Fabian B Wadsworth2, Paul M Ayris1, Pierre Delmelle3, Jeremie Vasseur4, Corrado Cimarelli5 and Donald B Dingwell1, (1)Ludwig Maximilian University of Munich, Department of Earth and Environmental Sciences, Munich, Germany, (2)Durham University, Durham, United Kingdom, (3)Université Catholique de Louvain, Louvain-La-Neuve, Belgium, (4)LMU Munich, Munich, Germany, (5)Ludwig Maximilians University of Munich, Earth and Environmental Sciences, Munich, Germany
PoWAR: a portable wind tunnel facility for studying in situ resuspension of volcanic ash (587623)
Elisabetta Del Bello1, Jacopo Taddeucci1, Jonathan P Merrison2, Keld Romer Rasmussen2, Jens Jacob Iversen2, Piergiorgio Scarlato1, Tullio Ricci1 and Daniele Andronico3, (1)Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy, (2)Aarhus University, Aarhus, Denmark, (3)Istituto Nazionale di Geofisica e Vulcanologia, Etna Observatory, Catania, Italy
The break-up of low viscosity melts (587754)
Thomas J. Jones, Rice University, Department of Earth, Environmental and Planetary Sciences, Houston, TX, United States, Carl Reynolds, University of Birmingham, School of Chemistry, Birmingham, United Kingdom and Stephen Boothroyd, University of Durham, Department of Chemistry, Durham, United Kingdom
Breadcrust Blocks Sample the Pre-eruptive Conduit in Vulcanian to Subplinian Eruptions (600672)
Heather Michelle Nicholson Wright1, Amelia Anne Bain2, Mary Benage1 and Katharine V Cashman3, (1)USGS Cascades Volcano Observatory, Vancouver, WA, United States, (2)University of Edinburgh, School of Geosciences, Edinburgh, United Kingdom, (3)University of Bristol, Bristol, United Kingdom
Correlating the Campanian Ignimbrite using matrix glass geochemistry and morphology (602169)
Rose Isabelle Gallo, Northern Arizona University, Flagstaff, AZ, United States, Kayla Iacovino, Jacobs Technology, NASA Johnson Space Center, ARES, Houston, United States, Michael H Ort, Northern Arizona Univ, Flagstaff, AZ, United States, Aurora Silleni, Roma Tre University, Rome, Italy, Agnese Barbero, University of Turin, Turin, Italy and Roberto Isaia, National Institute of Geophysics and Volcanology, Naples, Italy
Deposition Temperature of the July 2015 Pyroclastic Density Currents at Volcán de Colima (Mexico) (606038)
Lea Scharff1, Joerg Hasenclever1, Matthias KG Hort1 and Nick R Varley2, (1)University of Hamburg, CEN, Institut of Geophysics, Hamburg, Germany, (2)Universidad de Colima, Facultad de Ciencias, Colima, Mexico
Unravelling the Dynamics and Hazards of the June 3rd, 2018 Pyroclastic Currents at Fuego volcano (Guatemala): A Multi-Parameter Approach (619589)
Sylvain J Charbonnier1, Luke Varner2, Rudiger P Escobar-Wolf3, Lizzette A Rodriguez4, Gustavo Chigna5, Carla Chun5, Dulce Gonzalez5, Francisco Juarez5, Roberto Merida5, Eliza Calder6 and Aurelie Germa1, (1)University of South Florida, Geosciences, Tampa, FL, United States, (2)University of South Florida Tampa, School of Geosciences, Tampa, FL, United States, (3)Michigan Technological Univ., Houghton, MI, United States, (4)University of Puerto Rico Mayaguez, Mayaguez, PR, United States, (5)INSIVUMEH, Guatemala City, Guatemala, (6)University of Edinburgh, School of GeoSciences, Edinburgh, United Kingdom
Eruptive Style Transition at La Fossa Cone, Vulcano Island, Italy (626907)
Jisoo Kim1, Amanda B Clarke1,2, Kurt Roggensack1, Marco Pistolesi3 and Costanza Bonnadona4, (1)Arizona State University, Tempe, AZ, United States, (2)Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa, Pisa, Italy, (3)University of Pisa, Pisa, Italy, (4)University of Geneva, Geneva, Switzerland
The upper limit on magma decompression rate from bubble number density (629035)
Sahand Hajimirza, Rice University, Department of Earth, Environmental and Planetary Sciences, Houston, TX, United States, Helge Gonnermann, Rice University, Houston, TX, United States and James E Gardner, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States
