WPGM 96
Volcanology/Geochemistry/Petrology Sessions and Presentations
V21A BCC:P5 Tues 0830h
Emplacement Mechanisms of Lava Flows I (joint with BC)
Presiding: K Cashman, University of Oregon; H Pinkerton,
University of Lancaster
0830h V21A-01 Experimental Determination of the
Viscosity of Crystal-Bearing Rhyolitic
Obsidians: *S L Webb, R L Stevenson, D B
Dingwell
0850h V21A-02 Field Measurements of the
Rheological and Thermal Properties of Lavas
From the East Rift Zone, Hawaii: *H
Pinkerton, R Herd
0910h V21A-03 Morphological Characteristics of the
1984 Open-Channel Lava Flow at Krafla,
Northern Iceland: *M J Rossi
0930h V21A-04 A Longer Look at the Ka'upulehu Flow
Field, Hualalai Volcano, Hawaii: *K V Cashman,
J P Kauahikaua, D A Clague
0950h V21A-05 Emplacement-Related Fracture
Development in a Holocene Lava Flow on the
Island of Tenerife, Canaries: *M Dance, P
Hancock, S Sparks
1010h Break
1030h V21A-06 Effects of Cooling and Magma Yield
Strength on the Growth of Silicic Lava Domes:
*R W Griffiths, J H Fink
1050h V21A-07 Lobe and Layered Structure in Dacite
Sills of the Archaean Strelley Succession,
Western Australia: *J McPhie, Y Goto
1110h V21A-08 Are Large Lava Flows Emplaced
Rapidly or Slowly?: L Keszthelyi, S Self
V22A BCC:P5 Tues 1330h
Ancient Volcanic Successions: Evolution, Facies,
Mineralization I
Presiding: J McPhie, University of Tasmania; R Cas,
Monash University
1330h V22A-01 Fiamme Associated With Silicic
Pumiceous Lavas and Intrusions: *C C Gifkins,
J McPhie, R L Allen
1350h V22A-02 Characteristics and Origins of
Miocene Submarine Felsic Hyaloclastites of
the Okotsunai Formation, Karibiyama Area,
Hokkaido, Japan: *C Scutter, R A F Cas, C L
Moore, H Yamagishi
1410h V22A-03 Fragmentation and Depositional
Processes During Construction of a Submarine
Volcanic Edifice, Kabuto Cape, Hokkaido,
Japan: *C L Moore, R A F Cas, C Scutter, H
Yamagishi
1430h V22A-04 Volcanic Architecture of a Middle
Devonian Sodic Rhyolite Volcanic Centre: Mt
Morgan, Queensland, Australia: P R Messenger,
*S D Golding
1450h V22A-05 Thalanga: A Dome-Top VMS Deposit
Related to Explosive Eruption of a
Quartz-Eye Porphyry and Its Fluids: *R A
Sainty, A P Hill
1510h Break
1530h V22A-06 Fragmentation Processes and Water
Depth Significance of Miocene Submarine Fire
Fountain Deposits, Ryugazaki, Hokkaido, Japan:
*R A F Cas, C L Moore, C Scutter, H Yamagishi
1550h V22A-07 A Multiple Vent Sequence of a
Shallowing-Up Marine Volcaniclastic Complex
at Lookout Bluff, New Zealand: *D Maicher
1610h V22A-08 Pre-emergent Construction of a
Lacustrine Basaltic Volcano, Pahvant Butte,
Utah, USA: *J D L White
1630h V22A-09 Evidence for Intrabasinal,
Submarine, Felsic Volcanism From the
Archaean Black Flag Beds, Kalgoorlie,
Western Australia: *J L Hand, R A F Cas
1650h V22A-10 Facies Relationships of Near-Vent
and Medial to Distal Pyroclastic Assemblages
and Evolution of the Las Canadas Caldera,
Tenerife: *S E Bryan
1710h V22A-11 INVITED Setting of the Thalanga
Volcanic Hosted Massive Sulfide (VHMS)
Deposit in the Cambro-Ordovician Mount
Windsor Subprovince, North Queensland
(Australia): *H Paulick
V31A BCC:P5 Wed 0830h
Andesite Volcanism and Petrogenesis of Subduction-Related
Magmas I
Presiding: D Gust, Queensland University of Technology
0830h V31A-01 Magma Differentiation Histories
Determined From Compositional and
87Sr/86Sr Profiling of Plagioclase:
*J P Davidson, F Tepley
0850h V31A-02 Magmatic System and Its Temporal
Variations During the Historic Activities
(1085-1983 A.D.) of Miyakejima Volcano,
Izu-Mariana Arc, Japan: M Amma, M Nakagawa
0910h V31A-03 The Magma Variations of the
1991-1994 Eruption at Unzen, Japan: Evidence
From Sr, Nd, and O Isotopic Studies: *C H
Chen, S Nakada, Y N Shieh, D J DePaolo
0930h V31A-04 Isotopic and Geochemical Evolution
Within the Western Pacific
Tonga-Kermadec-Lau Arc-Backarc System: *A
Ewart, K D Collerson, J I Wendt, Y Niu, M
Regelous
0950h V31A-05 U-Th Disequilibrium and Petrogenesis
of Young Volcanic Rocks From the
Tonga-Kermadec Arc, Western Pacific: *M
Regelous, K Collerson, A Ewart, J I Wendt
1010h Break
1030h V31A-06 Petrology of the Juvenile Ejecta
From the 1995 Eruption at Mt. Ruapehu, New
Zealand: *M Nakagawa, K Wada, P Wood, T
Thordarson, J Gamble
1050h V31A-07 Radiogenic Isotope and Trace Element
Geochemistry of Diamondiferous Cretaceous
Alkaline Ultramafic and Mafic Rocks:
Valaginsky Range, Eastern Kamchatka Arc: *K D
Collerson, P Kepezhinskas
1110h V31A-08 Source Components and Enrichment
Processes in the Sub-Philippine Mantle Wedge:
*U Knittel, T F Yang
1130h V31A-09 Origin of the Dun Mountain
Ophiolite: Implications of Nd-Isotopes: *W J
Sivell
1150h V31A-10 Pb-Pb Whole-Rock Systematics in
Meta-Komatiites From Northern Labrador:
Evidence for Early Archean U-Loss: *J I Wendt,
K D Collerson
V32A BCC:P6 Wed 1330h
Models for Magmatic Processes I Posters
Presiding: T Thordarson, Inst of Geological and Nuclear Sciences
1330h V32A-01 POSTER Dynamics of Volcanic
Eruptions Driven by Interactive
Non-equilibrium H2O Degassing:
Animated Numerical Models: *A A Proussevitch,
D L Sahagian
1330h V32A-02 POSTER Vesicle Size Distribution of
Hachinohe Ash Layers: *K Mannen, K Kurita
1330h V32A-03 POSTER Modeling Granite (s.l.)
Volatiles: *P M Piccoli, P A Candela, T J
Williams
1330h V32A-04 POSTER Post-eruptive Deformation in
Izu-Oshima, Japan: Transient Creep-Like
Deformation and Episodic Inflation: *M
Hashimoto, T Tada, K Numakawa
V32B BCC:P6 Wed 1330h
Emplacement Mechanisms of Lava Flows II Posters
Presiding: K Cashman, University of Oregon
1330h V32B-01 POSTER Analytical/Numerical
Modeling of the Emplacement and Thermal
Erosion Potential of Komatiite Lavas: *D A
Williams, C M Lesher
1330h V32B-02 POSTER Large Scale Cretaceous
Bimodal Volcanism in the Southern Etendeka,
Namibia: The Goboboseb Mountains-Messum
Eruptive Complex for the Awahab Magmatic
System: *A Ewart, S C Milner, R A Armstrong,
A R Duncan
1330h V32B-03 POSTER Magmatic Processes of
Izu-Tobe, Izu-Oshima, and Miyakejima
Volcanoes, Japan, Subject to Different
Tectonic Stresses in the Same Volcanic Chain:
*Y Ida
V32C BCC:P6 Wed 1330h
Andesite Volcanism and Petrogenesis of Subduction-Related
Magmas II Posters
Presiding: D Gust, Queensland University of Technology
1330h V32C-01 POSTER Geochemical and U-Th
Isotopic Study of Cenozoic High-K Volcanics
From Wudalianchi and Keluo, NE China: *J X
Zhao, M Zhang, K D Collerson
1330h V32C-02 POSTER The Petrogenesis of the
Tertiary Basalt, Barrington Tops, New South
Wales, Australia: *M C Bruce
1330h V32C-03 POSTER Petrogenesis of Boninitic
Volcanic Rocks From the Early Proterozoic
Amisk Lake Volcanic Sequence, Flin Flon-Snow
Lake Greenstone Belt, Canada: *N A
Van Wagoner, M I Leybourne, L D Ayres
1330h V32C-04 POSTER Osmium Isotopic Constraints
on the Nature of the Hawaiian Plume Source:
*V C Bennett, M D Norman, T M Esat
V32D BCC:P6 Wed 1330h
Ancient Volcanic Successions: Evolution, Facies,
Mineralization II Posters
Presiding: J McPhie, University of Tasmania
1330h V32D-01 POSTER Magma Composition and
Viscosity as Controls on Peperite Texture:
An Example From Passamaquoddy Bay,
Southeastern Canada: *K A Dadd, N A
Van Wagoner
V42A BCC:M1 Thurs 1330h
Models for Magnetic Processes II
Presiding: T Thordarson, Inst of Geological and Nuclear Sciences;
K Cashman, University of Oregon
1330h V42A-01 INVITED Magmatic Fragmentation and
Clast Size Generation: *K Cashman
1350h V42A-02 INVITED Sulfur Degassing and the
Nature of Explosive Activity During Flood
Lava Eruptions: *T Thordarson, S Self
1410h V42A-03 An Experimental Investigation Into
the Inhibiting Role of Viscosity on Bubble
Growth in Rhyolitic Eruptions: *M Hilton, M
Carroll, S Lane
1430h V42A-04 INVITED The 1995 Ruapehu Eruption,
New Zealand: C Bryan, B W Christensen, K A
Hodgson, B F Houghton, D M Johnston, J
Lindsay, V Manville, M Nakagawa, I A Nairn,
P M Otway, S Sherburn, B J Scott, T
Thordarson, C J N Wilson, C P Wood
1450h V42A-05 Kinetics of Rhyolite Magma Degassing:
*N S Bagdassarov, R Stevenson
1510h Break
1530h V42A-06 The White Trachytic Tuffs
(Roccamonfina Volcano, Southern Italy):
Stratigraphy, Eruptive History and
Mechanisms of Emplacement: *G Giordano
1550h V42A-07 Changes in Eruption Styles
Accompanied With the Variation of Total
Water Content of the Glass Inclusions: M
Moriizumi, T Ui
1610h V42A-08 Partial Melting of Magma Chamber
Boundaries: *A M Leitch
1630h V42A-09 Mapping Active Magma Chambers by
b-Values: *M Wyss, K Shimazaki, Y L Zhao,
S Wiemer
1650h V42A-10 Mathematical Modeling of
Magma-Hydrothermal System, Usu Volcano, Japan:
*N Matsushima, T Ishido
Return to 1996 WPGM Summary
