Abstract
WE report here preliminary results from the detailed sampling of granitic basement at a depth of 4,000 m at the lower edge of the Armorican continental margin near 48°N and 12°W. We consider that we have sampled here the extreme lateral limit of the continental crust where local exposures emerge from under a cover of Cainozoic, Mesozoic and probable Palaeozoic sediments.
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References
Laughton, A. S., Roberts, D. G., and Graves, R., Sheet 3, No. C 6568 (Institute of Oceanographic Science, United Kingdom, 1975).
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PAUTOT, G., RENARD, V., AUFFRET, G. et al. A granite cliff deep in the North Atlantic. Nature 263, 669–672 (1976). https://doi.org/10.1038/263669a0
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DOI: https://doi.org/10.1038/263669a0
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