Abstract
The detailed petro-paleomagnetic study of the Paleoproterozoic eclogite complexes of the White Sea mobile belt in the area of Gridino dike field revealed two stages of rock remagnetization. The Early Paleoproterozoic gabbronorite dikes contain a secondary component of NRM that is pointed NNW with a strong positive slope that is correlated with the post-orogenic collapse of 1.95-1.88 Ga B.P. Formation of the second alternating magnetization phase of rocks is estimated at 1.8-1.75 Ga B.P., which corresponds to the influence of post-orogenic hydrothermal fluids.
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