PALAEOENVIRONMENT AND PALAEOECOLOGY OF GONG I LA FORMATION AT ASHAKA, UPPER BENUE TROUGH: A GEOCHEMICAL AND FACIES ANALYSIS APPROACH.  

2003-07-01
The type section of the Gongila Formation exposed at Ashaka quarry consists of an alternation of fossiliferous and bioturbated limestones as well as well-laminated and bioturbated shales with several layers ...