Abyssal hills,magnetic anomalies and the east pacific rise |
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| Affiliation: | 1. Imperial College London (M.O., E.M.), Department of Surgery and Cancer, London, UK;2. Department of Medicine, Division of Cardiovascular Medicine, Brigham and Women''s Hospital, Harvard Medical School (H.W.), Boston, Massachusetts, USA;3. Department of Medicine, Cardiology Section, VA Boston Healthcare System (H.W.), Boston, Massachusetts, USA;4. Department of Public Administration and International Affairs, Syracuse University (D.W.), Syracuse, New York, USA;5. London School of Economics and Political Science (E.M.), Department of Health Policy, London, UK |
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| Abstract: | Long ridges and troughs are characteristic of the East Pacific rise off North and Central America. The trends of the topography are parallel to the trends of magnetic anomalies but are not specifically related. Locally the topography, like the magnetic anomalies, shows a gross symmetry and the sea floor spreading hypothesis could account for that fact. Simultaneous rifting and accumulation of lava flows around opening rifts appear capable of generating this topography. |
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