M. Javoy

Institut de physique du globe de Paris

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F. Pineau

Université Paris Cité

Pierre Cartigny

Institut de physique du globe de Paris

N. Jendrzejewski

Centre National de la Recherche Scientifique

Pierre Agrinier

Institut de physique du globe de Paris

F. Robert

Laboratoire de Minéralogie & Cosmochimie du Muséum

Y. Bottinga

Institut de physique du globe de Paris

Claude J. Allègre

Université Paris Cité

Jeff W. Harris

Geoscience BC

Liliane Merlivat

Institut de Recherche pour le Développement

Serge Fourcade

Centre National de la Recherche Scientifique

Cooperative Institutions

Centre National de la Recherche Scientifique

108

Université Paris Cité

Institut de physique du globe de Paris

Sorbonne Université

Sorbonne Paris Cité

Institut de Recherche pour le Développement

Délégation Paris 7

Institut de minéralogie, de physique des matériaux et de cosmochimie

Université de Montpellier

Laboratoire de Sciences de la Terre

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Hydrothermal activity in a peculiar oceanic ridge: Oxygen and hydrogen isotope evidence in the Xigaze ophiolite (Tibet, China)

Chemical Geology (1988)

Pierre Agrinier M. Javoy J. Girardeau

Greenschist

Ultramafic rock

10.1016/0009-2541(88)90057-5

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Citations (51)

Metasomatic hydrous fluids in amphibole peridotites from Zabargad Island (Red Sea)

Earth and Planetary Science Letters (1993)

Pierre Agrinier Catherine Mével Delphine Bosch M. Javoy

Amphibole

Peridotite

Metasomatism

Hornblende

Pyroxene

10.1016/0012-821x(93)90239-6

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Citations (50)

Chlorine isotopic composition in seafloor serpentinites and high-pressure metaperidotites. Insights into oceanic serpentinization and subduction processes

Geochimica et Cosmochimica Acta (2007)

Magali Bonifacie Vincent Busigny Catherine Mével Pascal Philippot Pierre Agrinier

Ultramafic rock

10.1016/j.gca.2007.10.010

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Citations (101)

Evidence of fluid inclusions in metamorphic microdiamonds from the Kokchetav massif, northern Kazakhstan

Geochimica et Cosmochimica Acta (1998)

K. De Corte Pierre Cartigny V. S. Shatsky N. V. Sobolev M. Javoy

Massif

Ultramafic rock

10.1016/s0016-7037(98)00266-x

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Citations (126)

Deccan volcanism at the Cretaceous/Tertiary boundary; Data and inferences

Geological Society of America Special Papers (1990)

Vincent Courtillot Didier Vandamme Jean Besse Jean‐Jacques Jaeger M. Javoy

The proposal that the Deccan flood basalts erupted during a period of 500,000 years, at most—rather precisely at the Cretaceous/Tertiary (K/T) boundary—is based on paleomagnetic, paleontological, and geochronological data, which are briefly reviewed. Geochemical anomalies with a complex time signature are found in many K/T boundary sedimentary sections and may reflect multiple volcanic events, with the major one occurring in possibly some 10,000 years at K/T boundary time, for which an absolute age can be proposed from Deccan Ar ages (65.7 ± 2.0 Ma; N = 24 ages). The fact that short-term (<106 yr) K/T boundary anomalies in the sedimentary record often ride on longer term (>106 yr) anomalies is interpreted as being related to two different modes of convection in the mantle ("instability" versus "normal"), with a common primary cause. It is suggested that this cause lies in major ~170-m.y. fluctuations in thickness of the D″ layer, possibly with second-order fluctuations of 30-m.y. periodicity that still need to be confirmed.

Flood basalt

Deccan Traps

Magnetostratigraphy

10.1130/spe247-p401

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Citations (22)

Carbon and hydrogen isotope constraints on degassing of CO₂ and H₂O in submarine lavas from the Pitcairn hotspot (South Pacific)

Geophysical Research Letters (2006)

Cyril Aubaud F. Pineau R. Hékinian M. Javoy

The analysis of CO 2 –δ 13 C–H 2 O–δD in vesicles of 35 submarine volcanic glasses reveals that open‐system degassing, following closed‐system degassing, is responsible for the observed variations in volatile concentration and isotopic ratios. The least degassed samples allow the assessment of minimum estimates for the flux of CO 2 and H 2 O from the Pitcairn hotspot: 2.24 ± 0.17 10 4 tons C yr −1 and 1.32 ± 0.82 10 5 tons H 2 O yr −1 . The results also suggest that the carbon in the source of the Pitcairn hotspot may have a δ 13 C value around −6‰, 2‰ lower than the source of mid‐ocean ridge basalts. This indicates either a possible contribution from the lower mantle or the possible involvement of decarbonated recycled materials with an unusual carbon isotopic signature.

Hotspot (geology)

Isotopic signature

10.1029/2005gl024907

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Citations (42)

The origin and formation of metamorphic microdiamonds from the Kokchetav massif, Kazakhstan: a nitrogen and carbon isotopic study

Chemical Geology (2001)

Pierre Cartigny K. De Corte V. S. Shatsky Magali Ader Paul De Paepe

Pyroxene

Massif

Coesite

Pseudomorph

10.1016/s0009-2541(00)00407-1

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Citations (95)

Oxygen isotope partitioning among the minerals in igneous and metamorphic rocks

Reviews of Geophysics (1975)

Y. Bottinga M. Javoy

Using data on naturally occurring oxygen isotope fractionation among coexisting minerals in igneous and metamorphic rocks and previously derived relations, the authors deduce expressions for the temperature dependence of the isotopic disproportionation among the minerals quartz, feldspar, pyroxene, olivine, garnet, muscovite, biotite, amphibole, ilmenite, and magnetite. The expressions are only valid at temperatures greater than about 500°C. Oxygen isotope analyses on separated minerals (quartz, feldspar, pyroxene, olivine, garnet, muscovite, biotite, amphibole, ilmenite, magnetite) published prior to 1974 are reviewed and listed. The great majority of igneous and metamorphic rock samples for which three or more coexisting minerals have been analyzed separately has conserved a state of oxygen isotopic exchange equilibrium. Retrograde effects are common in plutonic and acidic volcanic rocks.

Pyroxene

Ilmenite

Amphibole

Muscovite

10.1029/rg013i002p00401

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Citations (420)

Comments on stable isotope geothermometry: the system quartz-water

Earth and Planetary Science Letters (1987)

Y. Bottinga M. Javoy

δ18O

10.1016/0012-821x(87)90005-7