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Scientific Program of the 1st Journée Magmatique*
Friday November 14, 1997 Salle 102, 13 rue des Maraîchers (Genève)
Welcome and Opening Remarks Mike Dungan (8:30)
Hercynian granitic magmatism: Geochronological perspectives (8:40 - 9:40)
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Short-lived bimodal magmatism at 307 Ma in the Mont-Blanc/Aiguilles-Rouges area: A combination of decompression melting, basaltic underplating, and crustal fracturing |
François BUSSY and J. Hernandez (Lausanne) |
(12 min) |
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How long lasts a magmatic episode? |
Urs SCHALTEGGER (Zürich) |
(12 min) |
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40Ar/39Ar and Rb-Sr constraints on magmatic and thermal evolution of the late-Hercynian Catalan Batholith (NE Spain) |
Mercé FERRES, and others (Geneva) |
(12 min) |
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Deep magmas |
Alan B. THOMPSON (Zürich) |
(12 min) |
Coffee Break and Laboratory Tours (10:20 - 10:55)
Invited Keynote Address: Richard ARCULUS (11:00 - 11:45)
Lunch: Cafétéria de télévision suisse romande (12:15 - 13:30)
Calc-alkaline Magmatism: Diverse perspectives (13:45 - 17:30/18:00)
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An experimental approach to understand the role of H2O in the generation of subduction related calc-alkaline magmas |
Peter ULMER (Zürich) |
(30 min) |
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Experimental determination of the liquid line of descent of primary, hydrous calc-alkaline magmas under high pressure conditions |
Ralph KAEGI (Zürich) |
(12 min) |
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Magma dynamics deduced from crystal growth stratigraphy of the active Arenal volcano, Costa Rica: Preliminary results |
Martin STRECK, and others (Geneva) |
(12 min) |
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Differentiation processes in subvolcanic magma reservoirs: Insights from SIMS studies of plagioclase and hornblende |
Fidel COSTA, B. Singer, M. Dungan (Geneva) |
(12 min) |
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Inherited argon in a Pleistocene andesitic lava: 40Ar/39Ar incremental heating and laser-fusion analyses of plagioclase |
Brad SINGER, and others (Geneva) |
(12 min) |
Short Coffee Break (15 min)
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Pyroclastic eruption of voluminous lava-like Fish Canyon dacite: A precursor to the collapse of the La Garita caldera, Central San Juan volcanic field, Colorado, USA |
Olivier BACHMANN, M. Dungan, and P. Lipman (Geneva) |
(12 min) |
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A new model for the origin of the Fish Canyon magma body: Central San Juan volcanic field, Colorado, USA |
Mike DUNGAN, O. Bachmann, and P. Lipman (Geneva) |
(12 min) |
Oceanic Intraplate Magmatism
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Multiple plume events in the genesis of the peri-Carribean Cretaceous oceanic plateau |
Henriette LAPIERRE, and others (Grenoble) |
(12 min) |
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Gabbro anatexis at a shallow level in the Fuerteventura Basal Complex, Canary Islands |
A. Hobson, F. Bussy and Jean HERNANDEZ (Lausanne) |
(12 min) |
* Plus several posters on display throughout the day
| Séminaires |