V
Valérie Chavagnac
Researcher at University of Toulouse
Publications - 68
Citations - 3197
Valérie Chavagnac is an academic researcher from University of Toulouse. The author has contributed to research in topics: Hydrothermal circulation & Hydrothermal vent. The author has an hindex of 23, co-authored 61 publications receiving 2717 citations. Previous affiliations of Valérie Chavagnac include University of Bern & Centre national de la recherche scientifique.
Papers
More filters
Journal ArticleDOI
Hf isotope ratio analysis using multi-collector inductively coupled plasma mass spectrometry: an evaluation of isobaric interference corrections
Nan-Chin Chu,Rex N. Taylor,Valérie Chavagnac,Robert W. Nesbitt,Rose M. Boella,J. Andrew Milton,Christopher R. German,Germain Bayon,Kevin W. Burton +8 more
TL;DR: In this article, the correction of isobaric interferences involving accepted Yb isotope ratios and reasonable estimates of mass bias result in a significantly under-corrected 176Hf, which is proportional to the amount of Yb added.
Journal ArticleDOI
Dating the Indian continental subduction and collisional thickening in the northwest Himalaya: Multichronology of the Tso Morari eclogites
Julia de Sigoyer,Valérie Chavagnac,Janne Blichert-Toft,Igor M. Villa,Béatrice Luais,Stéphane Guillot,Michael A. Cosca,Georges Mascle +7 more
TL;DR: In this article, multichronometric studies of the low-temperature eclogitic Tso Morari unit (Ladakh, India) place timing constraints on the early evolution of the northwest Himalayan belt.
Journal ArticleDOI
A geochemical and Nd isotopic study of Barberton komatiites (South Africa): implication for the Archean mantle
TL;DR: The Komati Formation of the Barberton greenstone belt (BGB), South Africa, is composed of both Al-undepleted and -depleted komatiites.
Journal ArticleDOI
Efficient removal of recalcitrant deep-ocean dissolved organic matter during hydrothermal circulation
Jeffrey A. Hawkes,Pamela E. Rossel,Aron Stubbins,David A. Butterfield,Douglas P. Connelly,Eric P. Achterberg,Eric P. Achterberg,Andrea Koschinsky,Valérie Chavagnac,Christian T. Hansen,Wolfgang Bach,Thorsten Dittmar +11 more
TL;DR: In this paper, the authors present measurements of solid-phase extractable organic carbon (DOC) from samples collected between 2009 and 2013 at seven vent sites in the Atlantic, Pacific and Southern oceans, along with magnesium concentrations, a conservative tracer of water circulation through hydrothermal systems.
Journal ArticleDOI
Characterization of hyperalkaline fluids produced by low-temperature serpentinization of mantle peridotites in the Oman and Ligurian ophiolites
Valérie Chavagnac,Christophe Monnin,Georges Ceuleneer,Cédric Boulart,Cédric Boulart,Guilhem Hoareau,Guilhem Hoareau +6 more
TL;DR: A regional survey of alkaline springs in Oman and Ligurian ophiolites shows that the alkaline water compositions significantly vary from one ophiolaite to the other and within the same ophiliite as mentioned in this paper, which poses the question of the hydrologic pathways and the role of the mineralogical composition of the altered formations.