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Sm/Nd constraints on the growth rate of continental crust
Tectonophysics, 1989Abstract The time constants are calculated which rule the evolution of Nd isotopes in a model Earth composed of the continental crust, a depleted upper mantle and a pristine lower mantle and in which the upper mantle is not constrained to grow or not to grow at the expense of the lower mantle. The growth rate of the continental crust is calculated to
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Lu-Hf and Sm-Nd isotope systems in zircon
Reviews in Mineralogy and Geochemistry, 2003As a significant carrier of uranium, thorium and the rare earth elements (REEs) at ppm level, and hafnium at the percent level, zircon hosts a remarkable number of long-lived radioactive isotopes and their stable decay products. These include 238U, 235U and 232Th which decay via intermediate steps to 206Pb, 207Pb and 208Pb, respectively, 176Lu which ...
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Sm–Nd systematics of Lewisian gneisses and the origin of granulites
Nature, 1979openaire +1 more source