The structural disturbance is filled by thick rocks of Jurassic age, suggesting that the impact took place during the Triassic.
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It has been suggested by Geophysicist David Rowley of the University of Chicago, working with John Spray of the University of New Brunswick and Simon Kelley of the Open University, that the Red Wing crater may have been part of a hypothetical multiple impact event which also formed the Manicouagan crater in northern Quebec, Rochechouart crater in France, Saint Martin crater in Manitoba, and Obolon' crater in Ukraine.
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