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
Bread trough Bread trough A bread trough, dough trough or kneading trough, sometimes referred to as artesa, is a rectangular receptacle with a shallow basin, and a traditional kneading tool used for the making of dough. The wooden form has been used in Europe for centuries in breadmaking. A kneading trough ( "mishereth") is a term for the vessel in which dough, after being mixed and leavened, was left to swell or ferment (; ; ). The dough in the vessels at the time of The Exodus was still unleavened, because the people were compelled to withdraw in haste.((Eastons)) The first citation