Int J Earth Sci (Geol Rundsch) (2004) 94:130–146

In the printed version of the article, a small piece of text was unfortunately omitted. Page 141, 1st column, line 10. From there, the text reads as follows:

...For all samples, Zr strictly covaries with Hf (97% Zr to 3% Hf, R2=0.98), whereas only marly lithologies have absolute Zr contents >5 ppm (Fig. 15). Only for these samples Zr negatively correlates with Y/Ho-ratios indicating a terrestrial signature, whereas for Zr <5 ppm terrestrial input is negligible. Interestingly, at low Zr contents highly variable Y/Ho ratios (34 to 51) are evident (Fig. 15). These rather pure.....

We also apologize for the reduction of several of the figures to postage-stamp size that occurred during final production by Springer.