RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 20, ES3006, doi:10.2205/2020ES000666, 2020

Figure 9. Carbon and Oxygen stable isotope compositions (in $‰$ relative to V-PDB and V-SMOW respectively), showing primary carbonatite nature of crystalline calcite rich 5119 samples. Fields for (a) primary carbonatite fields: 1 – Clarke et al. [1994]; 2 – Keller and Hoefs [1995] and 3 – Taylor et al. [1967] and (b) fields for carbonatites, kimberlites and orangeites after Tappe et al. [2006]. Symbols as in Figure 5.

 
Citation: Phani P. Ramesh Chandra, Prabir Sengupta, Sudeshna Basu (2020), Geochemistry and petrology of two kimberlites at Krishtipadu from Gooty cluster, Andhra Pradesh, southern India – evidence of kimberlite magmatism and a possible carbonatite association within Palaeoproterozoic lower Cuddapah basin, Russ. J. Earth Sci., 20, ES3006, doi:10.2205/2020ES000666.
 

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