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Science 11 May 1979:
Vol. 204. no. 4393, pp. 573 - 586
DOI: 10.1126/science.204.4393.573
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Articles

Deep Crustal Drilling in the North Atlantic Ocean

J. M. Hall 1 and P. T. Robinson 2

1 Professor in the Department of Geology, Dalhousie University, Halifax, Nova Scotia, B3H 3J5, Canada
2 Professor in the Department of Earth Sciences, University of California at Riverside, Riverside 95202

Oceanic crustal drilling by R. V. Glomar Challenger at 15 sites in the North Atlantic has led to a complex picture of the upper half kilometer of the crust. Elements of the picture include the absence of the source for linear magnetic anomalies, marked episodicity of volcanic activity, ubiquitous low temperature alteration and evidence for large scale tectonic disturbance. Comparison sections in the Pacific and much deeper crustal drilling are needed to attack problems arising from the North Atlantic results.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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Thermal and kinematic control on ocean-ridge magma fractionation: contrasts between Atlantic and Pacific spreading axes.
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Crustal Processes of the Mid-Ocean Ridge.
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Science. ISSN 0036-8075 (print), 1095-9203 (online)