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Marine Geophysical Researches

, Volume 5, Issue 4, pp 345–363 | Cite as

Pre-23 magnetic anomalies between Jan Mayen and Greenland-Senja fracture zones in the Norwegian sea

  • Terje Hagevang
  • Olav Eldholm
  • Inge Aalstad
Article

Abstract

Analysis of magnetic data between the Jan Mayen and Senja fracture zones indicates that the anomaly 24A-B sequence extends from the Lofoten Basin onto the outer Vøring Plateau. Anomaly patterns, including those on the conjugate margin, suggest that the pre-23 sea floor spreading was characterized by an unstable plate boundary between fracture zones. The pre-23 spreading rate was at least 2.5 cm yr-1 which is remarkably high compared with the post-23 rates. An evolutionary model which assumes Cenozoic oceanic crust as far landward as the Vöring Plateau and Greenland escarpments is suggested.

Keywords

Evolutionary Model Fracture Zone Oceanic Crust Magnetic Anomaly Plate Boundary 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© D. Reidel Publishing Company 1983

Authors and Affiliations

  • Terje Hagevang
    • 1
  • Olav Eldholm
    • 2
  • Inge Aalstad
    • 3
  1. 1.Saga Petroleum A/SHøvikNorway
  2. 2.Dept. of GeologyUniv. of OsloOsloNorway
  3. 3.Geological Survey of NorwayTrondheimNorway

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