Palynology and Paleoenvironmental Studies of Kinnasar -1 Well in Bornu Basin, Nigeria

Abstract

Palynological analysis was carried out on ditch cutting samples obtained from Kinnasar-1 well penetrating the Gongila and Fika Formation of Cenomanian to Turonian age in the Bornu basin. Lithostratigraphic studies revealed that the well mainly intercept shale lithology. Based on palynomorphs associations, three main palynological zones was established in Kinnasar-1 well. Quantitative approach applied to paleoenvironmental reconstruction of the basin indicated a shallow non – depositional environment with moderately high content of terrestrial influence than the marine origin. The dominance of index species of miospores, pollen taxa and few dynocyst are indicative of marginal marine environment. However, the predominance of shallow marine environment is attributed to strong terrestrial influence and weak marine dynocyst.