Uranium abundance of the oceanic crust

Details Uranium abundance of the oceanic crust Uranium abundance of the oceanic crust

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979gecoa..43..709f&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 43, Issue 5, pp.709-711

Physics

3

Scientific paper

Uranium contents of 67 oceanic basalts have been measured by fission track analysis. Average value for ridge and intraplate basalts is ~ 78 ppb, for the Easter Hot Line it is ~1600 ppb. Estimates of mantle concentrations derived from the ridge and intraplate samples are insufficient to account for the observed surface heat flow. The whole-Earth concentration of U is > 8 ppb. and < 33 ppb if all heat generated within the Earth reaches the surface.

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