fig01.htm

Figure 1. Scheme showing tectono-magmatic segmentation of the Mid-Atlantic Ridge, supplemented after [Dmitriev, 1998]. Symbols: 1 - ORT 1; 2 - ORT 1 + ORT-Fe ; 3 - ORT 2; 4 - ORT 1 + ORT 2; 5 - ORT-K. For ORT 1, ORT 2, etc., see explanations in text. The plume association includes ORT 1, ORT-Fe, and ORT-K; the spreading association is represented by ORT 2. I, II, and III - 1st order segments: I = South Atlantic, II = southern North Atlantic, III = northern North Atlantic. (1)-(4) - 2nd order segments: (1) - subequatorial segment, (2) - central segment, (3) - Azores segment, and (4) - Iceland segment. Fracture zones: JM = Jan Mayen, CG = Charlie Gibbs, P = Pico, O = Oceanographer, K = Kane, CV = Cape Verde, CH = Chain, 26o = 26oS lat. FZ, BV = Bouvet. Study area outlined by dashed line.


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