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HIMU mantle

Hilton D. R., Maepherson C. G., and Elliott T. R. (2000a) Helium isotope ratios in mahe phenocrysts and geothermal fluids from La Palma, the Canary Islands (Spain) implications for HIMU mantle sources. Geochim. Cosmochim. Acta 64, 2119-2132. [Pg.1015]

Figure 7 Initial 8n(J versus Sr/ Sr for continental alkali basalts, (a) Sodic alkali basalts, (b) High-Ti potassic alkali basalts. Present-day MORE, EMI, EM2, HIMU mantle sources from Hofmann (1997). (c) Low-Ti potassic alkali basalts. EA = European astbenospberic reservoir (data from Table 2). Figure 7 Initial 8n(J versus Sr/ Sr for continental alkali basalts, (a) Sodic alkali basalts, (b) High-Ti potassic alkali basalts. Present-day MORE, EMI, EM2, HIMU mantle sources from Hofmann (1997). (c) Low-Ti potassic alkali basalts. EA = European astbenospberic reservoir (data from Table 2).
Ballentine CJ, Porcelli D, Wieler R (2001) Noble gases in mantle plumes. Seienee 291 2269a Barfod DN, Ballentine CJ, Halliday AN, Fitton JG (1999) Noble gases in the Cameroon tine and the He, Ne and Ar isotopic compositions of high p (HIMU) mantle. J Geophys Res 104 29509-29527 Barling J, Goldstein SL (1990) Extreme isotope variations in Heard Island lavas and the nature of mantle reservoirs. Nature 348 59-62... [Pg.305]

Halliday AN, Davidson JP, Holden P, DeWolf C, Lee D-C, Fitton JG (1990) Trace-element fractionation in plumes and the origin of HIMU mantle beneath the Cameroon line. Nature 347 523-528 Hamano Y, Ozima M (1978) Earth-atmosphere evolution model based on Ar isotopic data. In Alexander EC, Ozima M (eds) Terrestrial Rare Gases. Center for Academic Publications Japan, Tokyo, p 155-171 Hamelin B, Dupre B, Allegre C-J (1984) Lead-strontium isotopic variations along the East Pacific Rise and the Mid-Atlantic Ridge a comparative study. Earth Planet Sci Lett 67 340-350 Hanan BB, Graham DW (1996) Lead and helium isotope evidence from oceanic basalts for a common deep source of mantle plumes. Science 272 991-995... [Pg.309]

Nd/ Nd vs Sr/ Sr isotope correlation diagram, showing the main oceanic mantle reservoirs of Zindler and Hart (1986). DM, depleted mantle BE, bulk silicate Earth EMI and EMII, enriched mantle HIMU, mantle with high U/Pb lado PREMA, frequendy observed PREvalent MAnde composition. The Mantle array is defined by many oceanic basalts and a bulk Earth value for Sr/ Sr can be obtained from this trend. [Pg.237]

The HIMU component in the magma sources of the mantle has an elevated Pb/ Pb ratio presumably because it has a high W Pb ratio which isotope geochemists call mu (p), hence the name HIMU. The apparent emichment of the HIMU mantle component in uranium (or its depletion in lead) have been alternatively attributed to ... [Pg.557]

See other pages where HIMU mantle is mentioned: [Pg.167]    [Pg.1010]    [Pg.1013]    [Pg.1381]    [Pg.309]    [Pg.312]    [Pg.118]    [Pg.118]    [Pg.389]    [Pg.395]    [Pg.402]    [Pg.404]    [Pg.237]    [Pg.239]    [Pg.240]    [Pg.241]    [Pg.547]   


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