[6] The eastern and western limits of the basin are defined by the Abakaliki Anticlinorium and Ibadan massif, respectively.
Albert Kitson discovered coal in 1909 at the Udi Ridge, Enugu; turning the region into a strategic British business area.
[7][8] Some of the coal mines operated in Enugu included Ogbete, Ribadu, Onyeama, Okaba and Okpara.
[1]: 153 In addition to coal, the basin holds an estimated gas potential in the region of 10 trillion cubic feet.
[9][10] Crude oil deposits have also been reported in some parts of Anambra Basin,[2]: 1 with estimated 50 or more billion barrels in reserves.