Tectonic evolution of the Knipovich Ridge based on the anomalous magnetic field |
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| Authors: | S Yu Sokolov |
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| Institution: | (1) Institute of Geophysics, Polish Academy of Sciences, ks. Janusza 64, Warsaw, 01-452, Poland |
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| Abstract: | Calculation of the downward continuation for the anomalous magnetic field at the Knipovich Ridge showed more complicate segmentation
of the spreading oceanic basement than was earlier considered. The structural pattern of the field is evidence that the area
consists of no less than four segments separated by transform fracture zones with the azimuth of oceanic crust accretion about
310° and the normal position relative to the rift segments with the azimuth of 40°. The modern location of the axis of the
Knipovich Ridge straightens the complicate divergent boundary between the plates in the strike-slip conditions between the
spreading centers of the Mohns and Gakkel ridges. The axis is a detachment zone intersecting the oceanic basement having formed
from the Late Oligocene. A new magnetoactive layer composed of magmatic products has not yet been formed in this structure. |
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