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
The Band from Rockall the Gaelic tradition and the Rock and Roll influence on their music. The Band from Rockall, full long title "The Solo Project from Calum and Rory Macdonald" was released in two formats: CD containing 12 tracks and Vinyl LP containing 9 tracks. The album is bilingual, in English plus four tracks in Gaelic. CD Vinyl LP Side 1: Side 2 ("Dàrna Taobh"): The Band from Rockall The Band from Rockall is a duo and solo project of Runrig songwriters Calum and Rory Macdonald. It is also the title of their debut self-titled bilingual album in English and Gaelic "The Band