Magnetic and bathymetric evidence for the 'Yermak hot spot' northwest of Svalbard in the Arctic Basin

Details Magnetic and bathymetric evidence for the 'Yermak hot spot' northwest of Svalbard in the Arctic Basin Magnetic and bathymetric evidence for the 'Yermak hot spot' northwest of Svalbard in the Arctic Basin

Jul 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979e%26psl..44...18f&link_type=abstract

Earth and Planetary Science Letters, vol. 44, no. 1, July 1979, p. 18-38. Navy-supported research.

Mathematics

Logic

29

Arctic Regions, Bathymeters, Geomagnetism, Seismology, Structural Basins, Tectonics, Basalt, Bibliographies, Data Acquisition, Earth Movements, Geological Faults, Graphs (Charts), Magnetic Anomalies

Scientific paper

Aeromagnetic data and bathymetric profiles collected in the Eurasia Basin off Northern Greenland and Svalbard which provide evidence for a 'Yermak hot spot' which has affected the basement morphology of an 200-km-long segment of the Nansen spreading axis since rifting began here about 60 m.y.B.P. are considered. Paired aseismic basement ridges associated with sublinear magnetic anomalies formed at the spreading axis in the lower Tertiary and ending at anomaly 12-13 time, and the Yermak/Morris Jesup Plateau as a single Iceland-like volcanic massif emergent above sea level during maximum hot spot activity are described. Appearance of the Yermak hot spot and the 'Yermak H-zone' at various anomaly times are discussed, and it is concluded that other possible manifestations of the Yermak hot spot include the early Tertiary Kap Washington group volcanics in northeast, Peary Land basalts and Paleocene ash horizons on Svalbard, and the higher elevation of continental land masses in the area.

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