Shettima, B.; Adams, F. D.; Haruna, A. I.; Goro, A. I.; Bukar, M. GEOCHEMICAL FACIES OF THE TURONIAN GONGILA FORMATION, BORNU (CHAD) BASIN, NIGERIA: IMPLICATION FOR PROVENANCE, PALEOCLIMATE AND PALEOWEATHERING CONDITIONS. Int. J. Res. Granthaalayah 2018, 6, 144-156.