Pb isotopes variation

The loading matrix FA1/2 given by equation (4.4.26) can be found in Table 4.14. Lead isotopes have strong correlation coefficients on the first component. They are decoupled from Sr and Nd isotopes which strongly correlate and anticorrelate, respectively, with the second component. On a global scale, Pb isotopic variations in oceanic islands seem to be decoupled from Sr and Nd isotopic variations. 

Sharma, M., Basu, A.R., Nesterenko, G.V. 1992. Temporal, Sr-, Nd- and Pb-isotopic variations in the Siberian flood basalts implications for the plume-source characteristics. Earth and Planetary. Science Letters, 113, 365-381. 

Fig. 5.6. Sr, Nd and Pb isotope variations for the Emici and Roccamonfina volcan-ics. The fields of mafic rocks from the Campania and Roman provinces are also shown. Symbols as in Fig. 5.4.

Fig. 6.8. Sr-Nd-Pb isotopic variation of Campania, Pontine Islands and Vulture volcanoes. The fields of other Italian magmatic provinces and HIMU, EMI and DMM mantle compositions are also shown.

Fig. 7.6. Sr-Nd-Pb isotopic variations of Aeolian arc rocks. Inset diagrams indicate isotopic compositions for mafic rocks of other Italian volcanic provinces.

Sr-Nd-Pb isotope variation along the Aeolian arc represents a part of a larger hyperbolic array connecting the Na-alkaline rocks of Etna-Iblei-Ustica and Tuscany (Figs. 7.6, 7.17). Most of the western and central Aeolian islands plot near to the low-Sr, high-Nd-Pb end-member, whereas the Stromboli volcanics plot away from Etna together with Campanian volcanoes and Emici-Roccamonfina KS rocks. However, the isotopically most primitive rocks from Alicudi have low Sr-isotopic ratios that fall outside the trend (Fig. 7.17). 

Shimizu N., Sobolev A. V., Layne G. D., and Tsameryan O. P. (2003) Large Pb isotope variations in olivine-hosted melt inclusions in a basalt fromt the Mid-Atlantic Ridge. Science (ms. submitted May 2003). 

Pedersen R. B. and Fumes H. (2001) Nd- and Pb-isotopic variations through the upper oceanic cmst in DSDP/ ODP Hole 504B, Costa Rica Rift. Earth Planet. Sci. Lett. 189, 221-235. 

Schilling J.-G., Kingsley R. H., Hanan B. B., and McCully B. L. (1992) Nd-Sr-Pb isotopic variations along the Gulf of Aden evidence for Afar mantle plume-continental lithosphere interaction. J. Geophys. Res. 97, 10927-10966. 

Pb isotope variations in Archaean time and possible links to the sources of certain Mesozoic-Recent basalts... 

Richardson, S., Erlank, A., Duncan, A. Reid, D. 1982. Correlated Nd, Sr and Pb isotopic variation in Walvis Ridge basalts and implications for the evolution of their mantle source. Earth and Planetary Science Letters, 59, 327-342. 

Wiechert UH, Halliday AN, Lee DC, Snyder GA, Taylor LA, Rumble D (2000) Oxygen- and tungsten-isotopic constraints on the early development of the moon. Meteoritics Planetary Sci 35 A169 Woodhead JD, Greenwood P, Harmon RS, Staffers P (1993) Oxygen isotope evidence for recycled crust in the source of EM-type ocean island basalts. Nature 362 809-813 Woodhead JD, Harmon RS, Fraser DG (1987) O, S, Sr, and Pb isotope variations in volcanic rocks from the northern Mariana islands implications for crastal recycling in intra-oceanic ares. Earth Planet Sci Letters 83 39-52... 

Edmond JM, Von Damm KL, McDuff RE, Measnres Cl (1982) Chemistry of hot springs on the East Pacific Rise and their effluent dispersal. Nature 297 187-191 Eiler J, Farley KA, Stolper EM (1998) Correlated He and Pb isotope variations in Hawaiian lavas. Geochim Cosmochim Acta 62 1977-1984... 

Figure 7 Pb isotope variations in Cenozoic sea water based on the analyses of hydrogenetic Fe-Mn crusts. Because of the short T of Pb the oceans have maintained distinct isotope signals throughout the past 50 My. There is more intra-basin variability with time because the short t does not allow such efficient lateral homogenization within basins as is the case for Nd. Therefore, local changes in erosion are much more visible in Pb isotope variations. (Reprinted from Geochimica et Cosmochimica Acta, 63, Frank M, O Nions RK, Hein JR, Banaker VK, 1689-1708, Copyright (1999) with permission from Elsevier Science.)...

Woodhead J.D., Harmon R.S. and Fraser D.G., 1987, O, S, Sr and Pb isotope variations in volcanic rocks from the Northern Mariana islands implications for crustal recycling in moa-oceanic arcs. Earth Planet. Sci. Lett., 83, 39-52. 

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