Abyssal hills of the eastern central North Atlantic |
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| Authors: | Peter A Rona Reginald N Harbison Sam A Bush |
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| Institution: | Atlantic Oceanographic and Meteorological Laboratories, National Oceanic and Atmospheric Administration, Miami, Fla. U.S.A. |
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| Abstract: | Abyssal hills were delineated in a 185 × 185-km area by an 18.5 × 18.5-km grid of narrow-beam bathymetric and geophysical profiles in oceanic crust of Cretaceous age near 23°N latitude, 31°W longitude. The abyssal hills are similar to features located along flow lines of sea-floor spreading near the crest of the Mid-Atlantic Ridge. This similarity indicates a primary origin for these abyssal hills related to axial processes at a mid-oceanic ridge involving construction (igneous) and tectonics (faulting), and secondary modification by volcanic activity. |
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