Origin and structure of the Iceland Plateau and Kolbeinsey Ridge
Abstract
Recent geophysical data from the Iceland plateau have revealed that asymmetrical sea-floor spreading is apparently occurring on the mid-ocean ridge. The western (Greenland) side is spreading at an average half rate of 0.77 cm/year out to anomaly 5, whereas the eastern side is spreading at an average half rate of 0.82 cm/year. Magnetic anomalies strongly suggest an extinct spreading axis on the Iceland plateau between 10 and 30 m.y. B.P. The quiet magnetic field and seismic reflection data support the hypothesis that the Jan Mayen ridge and 75 km of sea floor to its west are continental in origin.
- Publication:
-
Journal of Geophysical Research
- Pub Date:
- October 1972
- DOI:
- 10.1029/JB077i029p05688
- Bibcode:
- 1972JGR....77.5688J
- Keywords:
-
- Atlantic Ocean;
- Geophysical Surverys;
- Ocean Basins;
- Ocean Floors;
- Sea-Floor Spreading;
- Tectonics;
- Tectonophysics;
- Tectonophysics: Structure of the crust;
- Tectonophysics: Sea-floor spreading;
- Seismology: Structure of the crust and upper mantle;
- Information Related to Geographic Regions: Large islands or bodies of water (e.g.;
- Greenland;
- Mediterranean Sea)