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Science 4 March 1966:
Vol. 151. no. 3714, pp. 1075 - 1079
DOI: 10.1126/science.151.3714.1075
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Articles

Tertiary Sediment from the Mid-Atlantic Ridge

Tsunemasa Saito 1, Maurice Ewing 1, and Lloyd H. Burckle 1

1 Lamont Geological Observatory, Columbia University, Palisades, New York

Lower Miocene microfossils occur in basaltic glass in two dredge hauls from the crestal area of the Mid-Atlantic Ridge near 30°N. From the ridge and adjoining abyssal hills 43 pre-Pleistocene cores were identified, including one Cretaceous and four Eocene. Dredgings and cores now available suggest that the upper layer of the crust of the ridge is constructed of layers of interbedded sediments and basalt flows. The data rule out the possibility of large-scale continental drifting or spreading of the ocean floor since the Lower Miocene.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Cretaceous ammonite distributions and the opening of the South Atlantic.
W. J. KENNEDY and M. COOPER (1975)
Journal of the Geological Society 131, 283-288
   Abstract »    PDF »
Tertiary Sediment from the East Pacific Rise.
L. H. Burckle, L. H. Burckle, J. Ewing, T. Saito, and R. Leyden (1967)
Science 157, 537-540
   Abstract »    PDF »
Ages of Horizon A and the Oldest Atlantic Sediments.
J. Ewing, J. Ewing, J. L. Worzel, M. Ewing, and C. Windisch (1966)
Science 154, 1125-1132
   PDF »
Age of the Ocean Floor.
E. Orowan, M. Ewing, X. L. Pichon, and M. G. Langseth Jr. (1966)
Science 154, 413-416
   PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)