Without looking too far into it....it appears that the prospects are favorable. Here is an interesting article:
http://www.onepetro.org/mslib/servlet/onepetropreview?id=OTC-5713-MS
I'm still trying to research the quote in the previous post to find exactly what the guy is trying to say.
[This message has been edited by 10thYrSr (edited 2/25/2012 3:16p).]
quote:
A geophysical survey off the coast of Sierra Leone was carried out in April 1983 and September 1985 to investigate the structure of the West African continental margin between the Guinea and Sierra Leone fracture zones. A large (>100 mGal) free-air gravity anomaly and an associated negative magnetic anomaly show that the basic igneous complex of the Freetown Peninsula extends northwestwards beneath the continental shelf for approximately 100 km before swinging directly westwards towards the termination of the Guinea Fracture Zone. Reaching almost 20 km into the crust, the intrusion is of lopolithic form and appears to be a mantle-derived feature related to the activation of the Guinea Fracture Zone during the early Jurassic, rather than to melting following a meteorite impact as suggested by Krause in 1963. The intrusion is flanked by sedimentary basins containing at least 2 km of Mesozoic sediments overlain by about 200m of a Cenozoic sequence. Thick sediments occur beneath the continental slope where they are disrupted by faults and gravity slides which are particularly common near the Guinea and Sierra Leone fracture zones. The seismic stratigraphy of the deep-water sediments and the direction of oceanic fracture zones west of Sierra Leone indicate that the continental margin began to develop in the Cretaceous. Seismic reflectors of Eocene and probable mid-Cretaceous age extend under the continental slope from the Sierra Leone Abyssal Plain. The Cretaceous sequence appears to contain a southern extension of the thick black shales of the Gambia Basin, which may form an important petroliferous source rock beneath the shallower waters off Sierra Leone.
http://www.onepetro.org/mslib/servlet/onepetropreview?id=OTC-5713-MS
I'm still trying to research the quote in the previous post to find exactly what the guy is trying to say.
[This message has been edited by 10thYrSr (edited 2/25/2012 3:16p).]