OgbesejanaA. B.; SaboS. A.; AlisiI. O.; EgwuA. C.; OdusinaB. O. GEOCHEMISTRY OF THE UPPER CRETACEOUS SHALES FROM GOMBE FORMATION, GONGOLA BASIN, UPPER BENUE TROUGH, NIGERIA: IMPLICATIONS FOR PROVENANCE AND TECTONIC EVOLUTION. FUDMA JOURNAL OF SCIENCES, v. 8, n. 6, p. 528 - 538, 31 Dec. 2024.