Benue Trough the Central African Shear Zone and for the volcanic island of St. Helena in the Atlantic ocean. Three periods of magmatic activity (volcanic action) have been identified, 147–106 Ma, 97–81 Ma and 68–49 Ma. The first is prominent in the north of the trough, and contemporary with magmatism in Brazil, probably occurring during a period of crustal extension before the Atlantic started to open. The second is found only in the south of the trough, and may belong to a period when the extension of the Atlantic had slowed down, ending with a period of compression. The third and last
Rockall Bank dispute Copenhagen, the Government of Ireland was to host negotiations. They were due to commence in January 2008, but were postponed because of elections in the Faroe Islands. The talks are hoped to bring the four nations closer to reaching an agreement over the Rockall-Hatton basin. It is understood a final deal is not likely to be agreed at the Dublin meeting. The Irish Minister for Foreign Affairs at the time, Dermot Ahern said The latest conference between all four parties occurred in Reykjavik in May 2011 Notes Rockall Bank dispute Several states have claimed interests over the sea bed adjoining