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Journal of Palaeogeography
Fig. 6 | Journal of Palaeogeography

Fig. 6

From: First record of stable isotopes (δ13C, δ18O) and element ratios (Mg/Ca, Sr/Ca) of Middle to Late Jurassic belemnites from the Indian Himalayas and their potential for palaeoenvironmental reconstructions

Fig. 6

a A bivariate plot of δ18O versus δ13C values of all samples shows that alteration leads to successively more negative δ18O values in the analysed fossils from the Spiti and Zanskar valleys. Note the significant correlation between the δ18O and δ13C values of the belemnites from the Zanskar Valley; b A bivariate plot of δ18O versus Mg/Ca values of the accepted belemnites from the Spiti Valley exhibits a strong negative correlation; c A bivariate plot of δ18O versus Sr/Ca values of the accepted belemnites from the Spiti Valley does not show any correlation

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