Kinematic model of the opening of the Canadian Basin, Arctic Ocean |
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| Authors: | Al A Schreider L I Lobkovsky A A Schreider |
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| Institution: | 1. Joint Stock Company NIIgazekonomika, Moscow, Russia
2. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia
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| Abstract: | The initial configuration of the Arctida Craton was reconstructed from a complex geological-geophysical analysis of the anomalous magnetic field of the Canadian Basin in the Arctic Ocean. The modern version of the bottom geochronology indicates that the first stage of the formation of the Canadian Basin in the Arctic Ocean was related to extension and rifting in the Arctida Craton in the Kimmeridgian. The transformation of rifting into spreading presumably occurred during chron M22Ar (151 Ma). The second stage was related to the opening of the Canadian Basin within chrons M22Ar-M19 (151–145 Ma). The next stage of the opening of the basin was marked by a 100-km jump of the spreading axis to the east. This stage ended after chron M5 (130 Ma ago). At the fourth (Late Cretaceous) stage, extension spanned the Southern Canadian Basin with the formation of large igneous province. |
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