1 / 12

SBL74 : un double spike de Plomb

SBL74 : un double spike de Plomb. Une collaboration Brest-Southampton Laure Dosso 1 Rex Taylor 2 Osamu Ishizuka 2 *. 1 CNRS-UMR 6538, Brest 2 Southampton Oceanography Centre, England *Geological Survey of Japan, Ibaraki, Japan. Le spike • sa fabrication.

nituna
Télécharger la présentation

SBL74 : un double spike de Plomb

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. SBL74 : un double spike de Plomb Une collaboration Brest-Southampton Laure Dosso1 Rex Taylor2 Osamu Ishizuka2* 1 CNRS-UMR 6538, Brest 2 Southampton Oceanography Centre, England *Geological Survey of Japan, Ibaraki, Japan

  2. Le spike• sa fabrication SBL74 : “Southampton-Brest Lead 207-204 207PbCO3 92.83% 204PbCO3 99.708% Concentration : 7 ng/l

  3. • sa composition 204Pb/206Pb 207Pb/206Pb 208Pb/206Pb 1 Southampton Oceanographic Center 2 Danish Lithosphere Center

  4. Le standard NBS 981 • mesure NBS981 • mesure mélange (NBS981 et SBL74) •calcul compositionNBS981

  5. • comparaison inter-labos du NBS 981

  6. NBS 981

  7. • les standards de roche JB2

  8. JB2

  9. MAPCO DR11 (MORB)

  10. • la disponibilité (laure@univ-brest.fr) 100 ml : 1250 Euros (container and postage included) 2 microlitres/échantillon 50 000 mesures! Vancouver, Canada Université Libre de Bruxelles, Belgique Geological Survey of Japan, Japan University of California Santa Cruz, USA Danish Lithosphere Centre, Denmark NIGL Keyworth, UK SURRC, UK Nanjing University, China University of Iowa, USA BRGM, Orléans, France Geomar, Kiel, Germany

  11. 6. Les publis de référence • Hofmann, 1971Fractionation correction for mixed isotope spikes of Sr, K and Pb, Earth Planet.Sci. Lett. 10, 397-402. • Hamelin et al., 1985Precise lead isotope measurements by the double spike technique : a reconsideration, Geoch.Cosmoch. Acta 49, 173-182. • Woodhead, 1995Routine lead isotope determinations using a Pb 207-Pb204 double spike : a long term assessment of analytical precision and accuracy: Analyst 20, 35-39. • Habfast, 1998Fractionation correction and multiple collectors in thermal ionization isotope ratio mass spectrometry: International Journal of Mass Spectrometry 176, 133-148. • Galer, 1999Optimal double and triple spiking for high precision lead isotopic measurement: Chem Geol, 57, 255-274.

  12. Les plus récentes • Johnson et Beard, 1999Correction of instrumentally produced mass fractionation during isotopic analysis of Fe by thermal ionisation mass spectrometry: Int. J. Mass Spectrom,193, 87-99. • Thirlwall, 2000Inter-laboratory and other errors in Pb isotope analyses investigated using a Pb207-Pb204 double spike: Chem Geol, 163, 299-322. • Doucelance et Manhès, 2001Reevaluation of precise lead isotope measurements by thermal ionization mass spectrometry: comparison with determinations by plasma source mass spectrometry: Chem Geol, 176, 361-377. • Ishizuka et al., 2003Fluid-mantle interaction in an intra-oceanic arc: constraints from high-precision Pb isotopes: Earth and Planetary Science Letters, 211, 221-236. • Baker et al., 2004 Pb isotopic analysis of standards and samples using a 207Pb-204Pb double spike and thallium to correct for mass bias with a double-focusing MC-ICP-MS, Chemical Geology, 211, 275-303. • Vlastelic et Dosso, 2005, Initiation of a plume-ridge interaction in the South Pacific recorded by high-precision Pb isotopes along Hollister Ridge, G3 vol 6, 5 .

More Related