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Hafnium isotope results from mid-ocean ridges and Kerguelen

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Hafnium isotope results from mid-ocean ridges and Kerguelen; 1983; Article; Journal; LITHOS; Jonathan, Patchett, P.

Summary

176Hf/177Hf ratios are presented for oceanic volcanics representing both extremes of the range of mantle HfNdSr isotopic variation. Hf from critical mid-ocean ridgebasalts shows that 176Hf/177Hf does indeed have a greater variability than 143Nd/144Nd and 87Sr/86Sr in the depleted mantle. This extra variation is essentially of a random nature, and can perhaps be understood in terms of known Rb/SrSm/NdLu/Hf fractionation relationships. At the other extreme of mantle isotopic composition, 176Hf/177Hf ratios for igneous rocks from the Indian Ocean island of Kerguelen show a closely similar variation to published 143Nd/144Nd ratios for the same samples. Comparison of HfNdSr c relationships for Tristan da Cunha, Kerguelen and Samoa reveals [...]

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Author :
Patchett P. Jonathan
Publisher :
Elsevier

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Harvested on Mon Jul 21 12:47:23 MDT 2014 from MODS XML Service

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Type Scheme Key
local-index unknown 70010366
local-pk unknown 70010366
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1016/0024-4937(83)90033-6
series unknown LITHOS

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journalLITHOS
parts
typevolume
value16
typeissue
value1
languageEnglish
citationTypeArticle

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