Session: Supervolcanoes, Ignimbrite Flare-ups, and Their Impacts: Definition, Debate, and New Developments (2009 Portland GSA Annual Meeting (18-21 October 2009))

Paper #

Start Time

1

8:00 AM

A CRITICAL OVERVIEW OF THE ENVIRONMENTAL, CLIMATIC AND HUMAN IMPACTS OF THE ~74 KYR BP TOBA “SUPER-ERUPTION”

OPPENHEIMER, Clive, Department of Geography, University of Cambridge, Downing Place, Cambridge, CB2 3EN, United Kingdom, co200@cam.ac.uk, co200@cam.ac.uk

2

8:20 AM

DISTAL ASH FALLOUT FROM LARGE IGNIMBRITE ERUPTIONS

ROSE, William I., Geological Engineering & Sciences, Michigan Technological Univ, 1400 Townsend Dr, Houghton, MI 49931, DURANT, A.J., Geography, University of Cambridge, Downing Place, Cambridge, CB2 3EN, United Kingdom and DARTEVELLE, Sebastien, Los Alamos National Lab, Geodynamics, EES-17, MS D443, Los Alamos, NM 87545, raman@mtu.edu, raman@mtu.edu

3

8:40 AM

RARE ISOTOPE INSIGHTS INTO SUPERERUPTION: SULFUR AND TRIPLE OXYGEN ISOTOPE GEOCHEMISTRY OF SULFATE AEROSOLS ABSORBED ON VOLCANIC ASH PARTICLES

MARTIN, Erwan and BINDEMAN, Ilya N., Geological Sciences, 1272 University of Oregon, Eugene, OR 97403, ermartin@uoregon.edu, ermartin@uoregon.edu

4

8:55 AM

SUPERERUPTIONS OF THE SIERRA MADRE OCCIDENTAL LARGE IGNEOUS PROVINCE: PROBABLE FACTOR IN THE EOCENE-OLIGOCENE-MIOCENE GLOBAL CLIMATE CHANGE

AGUIRRE-DÍAZ, Gerardo J., Centro de Geociencias, Campus Juriquilla, Universidad Nacional Autónoma de México, Blvd. Juriquilla 3001, Juriquilla, Querétaro, 76230, Mexico and RENNE, Paul R., Department of Earth and Planetary Science, University of California at Berkeley, and Berkeley Geochronology Center, 2455 Ridge Road, Berkeley, CA 94709, ger@geociencias.unam.mx, ger@geociencias.unam.mx

5

9:10 AM

MAGMATIC PLUMBING OF A "SUPERVOLCANO" EXPOSED TO A DEPTH OF 25 KM

QUICK, James E.¹, SINIGOI, Silvano², PERESSINI, G.², WOODEN, Joseph L.³, SBISA, Andrea² and DEMARCHI, G.², (1)Earth Sciences, Southern Methodist University, Box 750240, Dallas, TX 75275-4235, (2)Universita di Trieste, Via Weiss 8, Trieste, 34127, Italy, (3)USGS-Stanford Ion Microprobe Laboratory, Stanford University, Stanford, CA 94305, jquick@smu.edu, jquick@smu.edu

6

9:25 AM

TECTONIC CONTROLS ON VOLCANIC STYLES OF A SUPERVOLCANO FIELD: THE TEMORIS – CEROCAHUI REGION OF THE COPPER CANYON, NORTHERN SIERRA MADRE OCCIDENTAL (MEXICO)

BUSBY, Cathy J.¹, MURRAY, Bryan P.¹ and FERRARI, Luca², (1)Department of Earth Science, University of California, Santa Barbara, Webb Hall, BLDG 526, Santa Barbara, CA 93106-9630, (2)Centro de Geociencias, UNAM, Campus Juriquilla, Queretaro, Queretaro, 76230, Mexico, cathy@crustal.ucsb.edu, cathy@crustal.ucsb.edu

7

9:40 AM

EXTENSIONAL TECTONICS TRIGGERING PARTIAL MELTING OF SHALLOW INTRUSIONS IN THE BOLAñOS GRABEN, SOUTHERN SIERRA MADRE OCCIDENTAL, MEXICO

FERRARI, Luca¹, RAMOS ROSIQUE, Aldo², BRYAN, Scott Edward³ and RANKIN, Andrew², (1)Centro de Geociencias, UNAM, Campus Juriquilla, Queretaro, Queretaro, 76230, Mexico, (2)School of Geography, Geology and the Environment, Kingston University, Penrhyn Road, Kingston upon Thames, Surrey, KT1 2EE, England, (3)WH Bryan Mining and Geology Research Centre, Sustainable Minerals Institute, University of Queensland, Queensland, St Lucia, 4072, Australia, luca@geociencias.unam.mx, luca@geociencias.unam.mx

9:55 AM

Discussion

8

10:10 AM

DEFINING SUPER-ERUPTIONS AND EXPLORING THE LIMITS OF SUPER-ERUPTION SIZE

SELF, Stephen, Earth and Environmental Sciences, Open University and US Nuclear Regulatory Commission, Milton Keynes, MK76AA, United Kingdom, stephen.self@open.ac.uk, stephen.self@open.ac.uk

9

10:30 AM

DETERMINING VOLUMES OF SUPERERUPTIONS – THE PITFALLS OF “RULES OF THUMB”

DE SILVA, Shanaka, Geosciences, Oregon State University, Wilkinson Hall 104, Corvallis, OR 97331, desilvas@geo.oregonstate.edu, desilvas@geo.oregonstate.edu

10

10:45 AM

BUILD-UP TO AN IGNIMBRITE FLARE-UP: GEOLOGIC EVIDENCE FOR MAGMATIC-TECTONIC-VOLCANIC INTERPLAY IN THE CENTRAL TAUPO VOLCANIC ZONE, NEW ZEALAND

GRAVLEY, D.M., Institute of Earth Science and Engineering, University of Auckland, Auckland, 1142, New Zealand, LEONARD, Graham S., Joint Centre for Disaster Research, GNS Science/Massey University, PO Box 30 368, Lower Hutt, 5040, New Zealand, WILSON, C.J.N., Sgees, Victoria University, Wellington, 1001, New Zealand, ROWLAND, Julie V., School of Geography, Geology and Environmental Science, University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand and HIKUROA, D.C.H, Institute of Earth Science and Engineering, The University of Auckland, Private Bag 92019, Auckland, 1142, New Zealand, d.gravley@auckland.ac.nz, d.gravley@auckland.ac.nz

11

11:00 AM

PLEISTOCENE SILICIC FLARE-UPS IN THE NORTHERN ANDES OF ECUADOR

HALL, Minard L. and MOTHES, Patricia A., Instituto Geofísico, Escuela Politécnica Nacional, Quito, 1701-2759, Ecuador, volcan_pete@yahoo.com, volcan_pete@yahoo.com

12

11:15 AM

DO GLACIATION-DEGLACIATION CYCLES LEAD TO CLUSTERING VOLCANIC ERUPTIONS AND CALDERA FORMATION?

BINDEMAN, Ilya N., Geological Sciences, University of Oregon, Eugene, OR 97403 and GEYER, Adelina, CIMNE International Center for Numerical Methods in Engineering, Campus Norte UPC, C/Gran Capitan, Barcelona, 08034, Spain, bindeman@uoregon.edu, bindeman@uoregon.edu

13

11:30 AM

GEOLOGIC FRAMEWORK AND EVOLUTION OF THE HIGH ROCK CANYON VOLCANIC CENTER, NORTHWESTERN NEVADA: AN EARLY CALDERA-FOCUSED SYSTEM OF THE YELLOWSTONE HOTSPOT TRACK

NOBLE, Donald C., 3450 Rolling Ridge Road, Reno, NV 89506, HENRY, Christopher D., Nevada Bureau of Mines and Geology, University of Nevada, Reno, NV 89557, PARK, Steven L., Calle Majes 113, Urb. Residencial Higuereta, Santiago de Surco, Lima, 33, Peru, SMITH, Julie A., Geology, California State University, Sacramento, 6000 J Street, Sacramento, CA 95819-6043, HAUSBACK, Brian P., Geology, California State University, Sacramento, 6000 J Street, Sacramento, CA 958l9-6043 and HILTON, Richard P., Earth Science, Sierra College, 5000 Rocklin Road, Rocklin, CA 95677, dcn@kori.reno.nv.us, dcn@kori.reno.nv.us

14

11:45 AM

AN UPPER CRUSTAL SECTION THROUGH A TILTED EARLY CRETACEOUS NESTED CALDERA COMPLEX IN HONG KONG

SEWELL, Roderick J.¹, TANG, Denise L.K.¹ and CAMPBELL, S. Diarmad G.², (1)Hong Kong Geological Survey, Geotechnical Engineering Office, Civil Engineering and Development Department, 101 Princess Margaret Road, Kowloon, 0000, Hong Kong, (2)British Geological Survey, Murchison House, West Mains Road, Edinburgh, EH9 3LA, United Kingdom, sdgc@bgs.ac.uk, sdgc@bgs.ac.uk

2009 Portland GSA Annual Meeting (18-21 October 2009)

T65. Supervolcanoes, Ignimbrite Flare-ups, and Their Impacts: Definition, Debate, and New Developments