Clay mineralogy and provenance modeling of the Paleoproterozoic Kaladgi shales, Dharwar Craton, Southern India: Implications on paleoweathering and source rock compositions

In this detailed study clay mineralogy and rare earth (REE) of 1.8 Billion Years old  shales of the Proterozoic Kaladgi-Badami Basin , we found  shale samples with <10% values in K-enrichment are more positively correlated with ƩLREE and ƩREE, while the shales with >10% of K-enrichment do not show any correlation with REE contents .