Hf isotope evidence for a hidden mantle reservoir

TY - JOUR

T1 - Hf isotope evidence for a hidden mantle reservoir

AU - Bizzarro, Martin

AU - Simonetti, A.

AU - Stevenson, R.K.

AU - David, J.

PY - 2002/9/1

Y1 - 2002/9/1

N2 - High-precision Hf isotopic analyses and U-Pb ages of carbonatites and kimberlites from Greenland and eastern North America, including Earth's oldest known carbonatite (3 Ga), indicate derivation from an enriched mantle source. This previously unidentified mantle reservoir-marked by an unradiogenic Hf isotopic composition and preserved in the deep mantle for at least 3 b.y.-may account for the mass imbalance in Earth's Hf-Nd budget. The Hf isotopic data presented here support a common mantle source region and genetic link between carbonatite and some oceanic-island basalt volcanoes.

AB - High-precision Hf isotopic analyses and U-Pb ages of carbonatites and kimberlites from Greenland and eastern North America, including Earth's oldest known carbonatite (3 Ga), indicate derivation from an enriched mantle source. This previously unidentified mantle reservoir-marked by an unradiogenic Hf isotopic composition and preserved in the deep mantle for at least 3 b.y.-may account for the mass imbalance in Earth's Hf-Nd budget. The Hf isotopic data presented here support a common mantle source region and genetic link between carbonatite and some oceanic-island basalt volcanoes.

UR - http://www.scopus.com/inward/record.url?scp=0036764795&partnerID=8YFLogxK

U2 - 10.1130/0091-7613(2002)030<0771:HIEFAH>2.0.CO;2

DO - 10.1130/0091-7613(2002)030<0771:HIEFAH>2.0.CO;2

M3 - Journal article

AN - SCOPUS:0036764795

SN - 0091-7613

VL - 30

SP - 771

EP - 774

JO - Geology

JF - Geology

IS - 9

ER -