SmNd age and REE geochemistry of Proterozoic arc-related igneous rocks in the Richtersveld subprovince, Namaqua Mobile Belt, Southern Africa

@inproceedings{Reid1997SmNdAA,
  title={SmNd age and REE geochemistry of Proterozoic arc-related igneous rocks in the Richtersveld subprovince, Namaqua Mobile Belt, Southern Africa},
  author={Darren L. Reid},
  year={1997}
}
Abstract Igneous rocks of the Richtersveld Subprovince in South Africa and Namibia form a Palaeo-Mesoproterozoic arc complex, dominated by extrusive andesites and their plutonic equivalents (diorites, tonalites), although the whole spectrum of rock types from ultramafic to felsic is present. SmNd isotope data indicate an extrusion age of 2000 Ma, thereby confirming previously published RbSr and UThPb ages. Initial Nd, Sr and Pb isotope ratios indicate a juvenile crust-producing episode at… CONTINUE READING

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