143Nd/146Nd, a natural tracer: an application to oceanic basalts
作者： P. Richard , N. Shimizu , C.J. Allègre
DOI: 10.1016/0012-821X(76)90219-3
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摘要: The possibility of using 143Nd/146Nd as a natural tracer was examined by analyzing two Hercynian granitic rocks, one carbonatite, three alkali basalts and nine tholeiites. ratios are notably different for these rock types: 0.7068–0.7073 0.7078 the 0.7080 0.7083 isotopic difference between tholeiites suggests that they derived from parts mantle which have been chemically different. Comparison measured ratio growth in simple two-stage model system source tholeiite magmas has had light-REE-depleted pattern, being consistent with Gast's (1968) contention ridge part is residue left after previous melting event.
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