FN Archimer Export Format
PT J
TI Helium isotopes on the Pacific-Antarctic ridge (52.5°–41.5°S)
BT 
AF MOREIRA, M
   DOSSO, Laure
   ONDREAS, Helene
AS 1:1;2:2;3:3;
FF 1:;2:;3:PDG-DOP-DCB-GM-LGM;
C1 Univ Paris Diderot, Inst Phys Globe, Equipe Geochim & Cosmochim, F-75005 Paris, France.
   IFREMER, CNRS, UMR6538, F-29280 Plouzane, France.
   CNRS, UMR7154, F-75005 Paris, France.
C2 UNIV PARIS 07, FRANCE
   IFREMER, FRANCE
   CNRS, FRANCE
SI BREST
SE PDG-DOP-DCB-GM-LGM
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.959
TC 18
TU Centre national de la recherche scientifique
   Institut National de l'Information Géographique et Forestière
   Institut de physique du globe
   Institut français de recherche pour l'exploitation de la mer
   Service Hydrographique et Océanographique de la Marine
   Université Paris Diderot
   Université Pierre et Marie Curie
   Université de Bretagne Occidentale
   Université de Bretagne-Sud
   Université de La Réunion
UR https://archimer.ifremer.fr/doc/2008/publication-4348.pdf
LA English
DT Article
CR PACANTARCTIC 2
BO L'Atalante
DE ;Pacific Antarctic ridge;mantle geochemistry;helium isotopes
AB The first isotopic data and concentrations of helium are reported for the Pacific-Antarctic ridge between 52.5 degrees S and 41.5 degrees S. The He-4/He-3 ratio is extremely homogeneous over more than 1200 km, with a mean ratio of 99,275 (R/Ra = 7.29) and a standard deviation of 2719 (0.19), which is the lowest dispersion observed for the global mid oceanic ridge system. Moreover, the Menard T. F. is a frontier between two mantles with slightly different helium isotopic ratios (96,595 +/- 1520 and 100,347 +/- 2330). No difference in the helium concentration between the two ridge segments defined by the Menard T. F. can be observed, as well as no significant difference in the U and Th contents suggesting that the difference in helium isotopic ratio is old (>500 My) and may represent a slight difference in degassing or/and trace element depletion history.
PY 2008
PD MAY
SO Geophysical Research Letters
SN 0094-8276
PU American Geophysical Union
VL 35
IS 10
UT 000256137900003
DI 10.1029/2008GL033286
ID 4348
ER

EF