Sr, Nd, and Pb isotopic character of Tertiary basalts from southwest Poland

Details Sr, Nd, and Pb isotopic character of Tertiary basalts from southwest Poland Sr, Nd, and Pb isotopic character of Tertiary basalts from southwest Poland

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gecoa..53.2689b&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 53, Issue 10, pp.2689-2696

Computer Science

11

Scientific paper

Tertiary basaltic volcanics from southwest Poland which form the eastern part of the Central European Volcanic Province (CEVP) have been studied for Sr, Nd, and Pb isotopic compositions. 87 Sr / 86 Sr ratios range from 0.70317 to 0.70369, 143 Nd / 144 Nd ratios range from 0.51285 to 0.51302 and Pb isotopic compositions range from 19.42 to 19.94 for 206 Pb / 204 Pb . These data indicate the influence of three end-member mantle components DMM, HIMU and EM. An analysis of all isotopic results from the CEVP leads to the conclusion that basalts from SW Poland have the most depleted character. We propose a model whereby the depleted source mantle for the CEVP interacted with enriched components (EM). The western part of the CEVP was enriched on a larger scale than the eastern part, probably due to the influence of the Rhine Graben rift.

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