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By R. A. Scrutton

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Published through the yank Geophysical Union as a part of the Geodynamics Series.

The contributions to this quantity were geared up into 3 components reflecting the 3 pronged method of the learn of passive continental margins that has been made throughout the foreign Geodynamics venture. the 1st half includes six papers facing the information from many of the passive margins. those observational facts are crucial for checking out of hypotheses in regards to the evolution of this sort of margin. more often than not multi?]channel seismic mirrored image info are considered as delivering crucial info on structural stipulations and evolution of continental margins. but it is maybe both very important from the perspective of realizing the geodynamics concerned that there must have been deep crustal experiences of a minimum of a few of the margins. spotting that geophysical reports convey merely the constitution because it is this day recourse has to be made to stratigraphic experiences on the way to receive courses to the previous improvement of the margins. The papers partly One disguise a majority of these elements of passive margin improvement.

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Myhre, Continental margin off Lofoten-Vester•len, Mar. , 4, 3-35, 1979. , P. Magnetic and "Yermak" hot in the Arctic R. S. Fleming, bathymetric evidence for the spot northwest of Svalbard Basin, Earth Planet. 4,18-38, '1979. , G. Jaquart, F. Aubertin, and P. Beuzart, The Jan Mayen Ridge synthesis of geological knowledge and new data, Oceano- lo$ica Acta, 1, 335-358, Acknowledgments. M. Myhre for per- of Scotland and Iceland, Norges geol. Unders. , 316, 195-200, 1975. , J. P. Smith, U. Casten, and S.

Reflectors that may be interpreted as of volcanic origin also exist landward of the V•ring Plateau and Faeroe-Shetland escarpments. The period of smooth basement formation appears to Vol. 6 Mesozoic and probably also Paleozoic sequence underlies the Barents Sea, but the upper part of the Mesozoic may be absent at the Svalbard Platform (Eldholm and Ewing, 1971; Sundvor, 1974; Renard and Malod, 1974; Briseid and Mascle, 1975; Eldholm and Talwani, 1977). Exploration with emphasis on multi-channel seismic reflection has established a detailed Since Eocene time the margin has developed by subsidence and progradation.

J. • 14, 2481-2494 , 1977. W. W. Basham, Seismotectonics of the Beaufort Sea, Can. J. , 16, 816-830, 1979. G. J. R. J. Glass, Can. Mackenzie Delta, Soc. Petroleum Geol. Memoir 4, 633-647, 1975. , and A. W. E. level aeromagnetic 1967. Bower, Arctic Ocean: profiles obtained in Low1975, Geol. Survey Can. Paper 76-1A, 421-424, 1976. , on I. R. structure of Alldredge, the central region, Geol. Soc. Am. R. J. Soc. Am. , by Can. 87, 1599-1608, 1976. , and E. paleocontinental Canada, Geol. 535-561, of Survey Can.

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