B. Villemant

Centre National de la Recherche Scientifique

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Georges Boudon

Institut de physique du globe de Paris

A. Michel

Institut de physique du globe de Paris

Anne Le Friant

Institut de physique du globe de Paris

Jean‐Christophe Komorowski

Institut de physique du globe de Paris

Hélène Balcone-Boissard

Institut des Sciences de la Terre de Paris

Osamu Ishizuka

Geological Survey of Japan

Benoît Caron

Centre National de la Recherche Scientifique

Fukashi Maeno

The University of Tokyo

Michael Manga

University of California, Berkeley

Sara Lafuerza

Institut des Sciences de la Terre de Paris

Cooperative Institutions

Centre National de la Recherche Scientifique

100

Université Paris Cité

Sorbonne Université

Institut de physique du globe de Paris

Sorbonne Paris Cité

Institut des Sciences de la Terre de Paris

University of Southampton

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

Institut de Recherche pour le Développement

Délégation Paris 7

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Hydrogen isotope determination by TC/EA technique in application to volcanic glass as a window into secondary hydration

Journal of Volcanology and Geothermal Research (2017)

Erwan Martin Ilya N. Bindeman Etienne Balan Jim Palandri A. N. Seligman

Volcanic glass

10.1016/j.jvolgeores.2017.10.013

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Citations (39)

Large-scale volcaniclastic turbidites from subaerial caldera-forming eruptions at Dominica: insights from IODP site U1398 cores

AGU Fall Meeting Abstracts (2014)

Fukashi Maeno Osamu Ishizuka Kyoko S. Kataoka Anne Le Friant Georges Boudon

Subaerial

Caldera

Phreatomagmatic eruption

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Citations (0)

H2O and halogen (F, Cl, Br) behaviour during shallow magma degassing processes

Earth and Planetary Science Letters (1999)

B. Villemant Georges Boudon

Silicic

Pumice

Melt inclusions

Fractional crystallization (geology)

Magma chamber

10.1016/s0012-821x(99)00058-8

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Citations (126)

Geochemistry of Vesuvius volcanics during 1631–1944 period

Journal of Volcanology and Geothermal Research (1993)

B. Villemant R. Trigila B DeVivo

Phenocryst

Trace element

10.1016/0377-0273(93)90114-7

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Citations (49)

Géochimie des éléments hygromagmatophiles, coefficients de partage minéraux /liquides et propriétés structurales de ces éléments dans les liquides magmatiques

Bulletin de Minéralogie (1979)

M. Treuil Jean‐Louis Joron H. Jaffrézic B. Villemant Georges Calas

The term hygromagmatophile element may be applied to those elements who maintain high stability in silicate liquid. They may be identified by (1) low crystal /liquid partition coefficient ; (2) high enrichment factors in a given differenciation series ; (3) linear correlations between the concentrations of pairs of such elements. We propose that the behaviour of hygromagmatophile elements is governed more by the formation of stabilizing complexes in the silicate liquids than by their rejection by the crystallizing solids. When expressed in terms of possible complexes, the activity of the trace element in the liquid becomes a function that may be sensitive to small changes in chemical composition and structural state. This would explain the range of behaviour of a given trace elements in different magmatic series (basaltic, calco-alkaline, alkaline, etc.). Moreover, recent structural studies of the liquid state give factual ground to our hypothesis.

Trace element

10.3406/bulmi.1979.7336

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Citations (26)

Role of large flank-collapse events on magma evolution of volcanoes. Insights from the Lesser Antilles Arc

AGUFM (2012)

Georges Boudon B. Villemant Anne Le Friant M. Paterne Elsa Cortijo

Flank

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Andesitic magma degassing investigated through H2O vapour–melt partitioning of halogens at Soufrière Hills Volcano, Montserrat (Lesser Antilles)

Earth and Planetary Science Letters (2008)

B. Villemant Joanna Mouatt A. Michel

Dome (geology)

Magma chamber

Melt inclusions

10.1016/j.epsl.2008.02.014

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Citations (46)

Late Pleistocene stratigraphy of IODP Site U1396 and compiled chronology offshore of south and south west Montserrat, Lesser Antilles

Geochemistry Geophysics Geosystems (2014)

Deborah Wall-Palmer Maya Coussens Peter J. Talling Martin Jutzeler Michael Cassidy

Abstract Marine sediments around volcanic islands contain an archive of volcaniclastic deposits, which can be used to reconstruct the volcanic history of an area. Such records hold many advantages over often incomplete terrestrial data sets. This includes the potential for precise and continuous dating of intervening sediment packages, which allow a correlatable and temporally constrained stratigraphic framework to be constructed across multiple marine sediment cores. Here we discuss a marine record of eruptive and mass‐wasting events spanning ∼250 ka offshore of Montserrat, using new data from IODP Expedition 340, as well as previously collected cores. By using a combination of high‐resolution oxygen isotope stratigraphy, AMS radiocarbon dating, biostratigraphy of foraminifera and calcareous nannofossils, and clast componentry, we identify five major events at Soufriere Hills volcano since 250 ka. Lateral correlations of these events across sediment cores collected offshore of the south and south west of Montserrat have improved our understanding of the timing, extent and associations between events in this area. Correlations reveal that powerful and potentially erosive density‐currents traveled at least 33 km offshore and demonstrate that marine deposits, produced by eruption‐fed and mass‐wasting events on volcanic islands, are heterogeneous in their spatial distribution. Thus, multiple drilling/coring sites are needed to reconstruct the full chronostratigraphy of volcanic islands. This multidisciplinary study will be vital to interpreting the chaotic records of submarine landslides at other sites drilled during Expedition 340 and provides a framework that can be applied to the stratigraphic analysis of sediments surrounding other volcanic islands.

Mass wasting

Tephrochronology

Chronostratigraphy

Submarine landslide

Chronology

10.1002/2014gc005402

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Citations (27)

Simultaneous Determination of Fluorine, Chlorine, Bromine and Iodine in Six Geochemical Reference Materials Using Pyrohydrolysis, Ion Chromatography and Inductively Coupled Plasma‐Mass Spectrometry

Geostandards and Geoanalytical Research (2009)

Hélène Balcone‐Boissard A. Michel B. Villemant

Concentrations of halogens (fluorine, chlorine, bromine and iodine) were determined in six geochemical reference materials (BHVO‐2, GS‐N, JG‐1, JR‐1, JB‐1b, JB‐2). Halogens were first extracted from powdered samples using a pyrohydrolysis technique, then hydrolysis solutions were analysed by ion chromatography for F and Cl and inductively coupled plasma‐mass spectrometry for Br and I. The detection limits in solutions were 100 μg l −1 for both F and Cl and 10 ng l −1 for Br and I. Considering the extraction procedure, performed on a maximum of 500 mg of sample and producing 100 ml of pyrohydrolysis solution, detection limits in rock samples were 20 mg kg −1 for F and Cl and 2 μg kg −1 for Br and I. The mean analytical errors on the studied composition ranges were estimated at 10 mg kg −1 for F and Cl, 100 μg kg −1 for Br and 25 μg kg −1 for I. The concentration values, based on repeated (generally > 10) sample analysis, were in good agreement generally with published values and narrowed the mean dispersion around mean values. Large dispersions are discussed in terms of samples heterogeneity and contaminations during sample preparation. Basaltic RMs were found to be more suitable for studies of halogen compositions than differentiated rock material, especially granites – the powders of which were heterogeneous in halogens at the 500 mg level.

Ion chromatography

Fluorine

10.1111/j.1751-908x.2009.00018.x

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Citations (62)

238U-230Th disequilibrium in hydrothermally altered material: a tool for dating volcano flank-collapse events

AGU Fall Meeting Abstracts (2009)

Anne Salaün B. Villemant M. Gérard Jean‐Christophe Komorowski Pascale Louvat

Flank

Disequilibrium

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Citations (1)