Plumbo tectonics

The Pb isotope ratios are consistent with young mineralisation (less than 800 My), Neo-Proterozoic to Palaeozoic and are similar to lead isotope ratios of epigenetic mineralisation. This suggests a radiogenic lead contribution from the upper crust. The isotopic curves generated by the plumbo-tectonic model of Zartman and Doe (1980) show that the isotopic ratios are below 800 Ma and correspond to crustal values. 

Zartman, R. E. Haines, S. 1988. The plumbo-tectonics model for Pb isotopic systematics among major terrestrial reservoirs - a case for bi-directional transport. Geochimica et Cosmochimica Acta, 52, 1327-1339. 

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See also in sourсe #XX -- [ , ]

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