Neodymium isotopic study of Baffin Bay water: sources of REE from very old terranes

Details Neodymium isotopic study of Baffin Bay water: sources of REE from very old terranes Neodymium isotopic study of Baffin Bay water: sources of REE from very old terranes

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986e%26psl..77..259s&link_type=abstract

Earth and Planetary Science Letters, Volume 77, Issue 3-4, p. 259-272.

Computer Science

42

Scientific paper

Water samples were collected from Baffin Bay and surrounding areas in order to evaluate this region as a potential source of Nd from old continental material to Atlantic water. The isotopic data ranged from ɛNd(0) = -9.0 to -26 with most of the data around ɛNd(0) = -20 compared with values of North Atlantic Deep Water (NADW) with ɛNd(0) = -13.5. The concentration of Nd in Baffin Bay waters was as high as 6 × 10-12 g/g compared with 2.5 × 10-12 g/g for NADW. The combination of low ɛNd and high Nd concentration indicates that Baffin Bay may be a significant source of Nd from very old crustal material. A simple box model was used to evaluate the contribution to the Nd budget of NADW and it was concluded that a substantial fraction of the Nd from ancient crustal sources that is required to maintain the isotopic composition of NADW could be supplied by Baffin Bay outflow.

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