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O'Nions, R K; Hamilton, P J; Evensen, N M (1977): Nd- and Sr- isotope ratios of oceanic basalts [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.721776, Supplement to: O'Nions, RK et al. (1977): Variations in 143Nd/144Nd and 87Sr/86Sr ratios in oceanic basalts. Earth and Planetary Science Letters, 34(1), 13-22, https://doi.org/10.1016/0012-821X(77)90100-5

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Abstract:
143Nd/144Nd ratios have been determined on 37 samples of oceanic basalt, with a typical precision of +/- 2-3 * 10**-5 (2 sigma). Ocean island and dredged and cored submarine basalts are included for which reliable measurements of 87Sr/86Sr ratios exist in the literature or have been measured as part of this study. A strong negative correlation exists between 143Nd/144Nd and 87Sr/86Sr ratios in basalts from Iceland and the Reykjanes Ridge, but such a clear correlation does not exist for samples from the Hawaiian Islands. However, when other ocean island basalts from the Atlantic are included there is an overall correlation between these two parameters. Increases and decreases in Rb/Sr in oceanic basalt source regions have in general been accompanied by decreases and increases respectively in Sm/Nd ratios. The compatibility of the data with single-stage models is assessed and it is concluded that enrichment and depletion events, which are consistent with transfer of silicate melts, are responsible for the observed variation.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 15.768378 * Median Longitude: -58.609937 * South-bound Latitude: -54.400000 * West-bound Longitude: -159.000000 * North-bound Latitude: 65.700000 * East-bound Longitude: 3.400000
Date/Time Start: 1974-06-17T00:00:00 * Date/Time End: 1974-06-17T00:00:00
Event(s):
37-332A * Latitude: 36.878700 * Longitude: -33.641000 * Date/Time: 1974-06-17T00:00:00 * Elevation: -1818.0 m * Penetration: 434.5 m * Recovery: 66.2 m * Location: North Atlantic/VALLEY * Campaign: Leg37 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 39 cores; 370.5 m cored; 0 m drilled; 17.9 % recovery
37-332B * Latitude: 36.878700 * Longitude: -33.641000 * Date/Time: 1974-06-17T00:00:00 * Elevation: -1806.0 m * Penetration: 721.5 m * Recovery: 122.9 m * Location: North Atlantic/VALLEY * Campaign: Leg37 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 48 cores; 582.5 m cored; 0 m drilled; 19.4 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. O'Nions, RK; Hamilton, PJ; Evensen, NM (1977): (Table 3) Sr and Nd-isotope ratios of oceanic basalts from DSDP Site 37-332. https://doi.org/10.1594/PANGAEA.721774
  2. O'Nions, RK; Hamilton, PJ; Evensen, NM (1977): (Table 1) Nd-isotope ratios of oceanic basalts. https://doi.org/10.1594/PANGAEA.721771
  3. O'Nions, RK; Hamilton, PJ; Evensen, NM (1977): (Table 2) Sr-isotope ratios of oceanic basalts. https://doi.org/10.1594/PANGAEA.721773