Magnetic anomalies and seafloor spreading rates in the northern South Atlantic.
A geomagnetic profile across the northern South Atlantic yields spreading rates for the last 70 m.y. which vary from 1.6 to 2.0 cm/year. There is evidence for three regional discontinuities in the spreading history of the South Atlantic.
van Andel
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Department of Oceanography, Oregon State University, Corvallis, Oregon 97331, USA.
Moore
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