Implications of Paleoweathering And Sediment Maturity in Geochemical Characterisation of Kalijhora Sandstones Exposed in The Extra-Peninsular Gondwana Basin, Darjeeling District, West Bengal, India. Int. J. Environ. Sci. Published online September 10, 2025:6957-6969. doi:10.64252/63qxfg83