Neodymium isotopic study of Baffin Bay water: sources of REE from very old terranes
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 ε_(Nd)(0) = −9.0 to −26 with most of the data around ε_(Nd)(0) = −20 compared with values of...
| Published in: | Earth and Planetary Science Letters |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
Elsevier
1986
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| Subjects: | |
| Online Access: | https://authors.library.caltech.edu/42021/ https://resolver.caltech.edu/CaltechAUTHORS:20131023-100240361 |
| Summary: | 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 ε_(Nd)(0) = −9.0 to −26 with most of the data around ε_(Nd)(0) = −20 compared with values of North Atlantic Deep Water (NADW) with ε_(Nd)(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 ε_(Nd) 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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