Abstract
Abstract The khondalites of the Eastern Ghats Province, India represent a sedimentary sequence of shale–greywacke, but the relatively more ferruginous composition can be attributed to some mafic rocks in the provenance. While a high La/Sc ratio and an insignificant Cr-enrichment over V in the majority of samples indicate dominantly granitic source rocks; a low La/Sc ratio and high Cr/V ratio in some samples indicate some mafic source rocks as well. High La/Sc ratio, LREE (light rare earth element)-enrichment, negative Eu anomaly and negative ε values, along with evidence of significant weathering and recycling in the provenance, indicate Old Upper Continental Crust-type provenance. Nd-model dates indicate Palaeoproterozoic provenance, which could be the Eastern Dharwar Craton and/or the Napier Complex of East Antarctica. (La/Yb) N ratios are variable and their co-variance with both (La/Sm) N and (Gd/Yb) N are noticeable, and could be attributed to the complexity of possible provenance composition.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call