Steven Dutch, Natural and Applied Sciences, University
of Wisconsin - Green Bay
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A spectacular contact between Keeweenawan volcanic rocks and interflow
sediments is exposed in a road cut just southwest of Grand Marais,
Minnesota. In addition to the contact itself, there are two spectacular squeezeups of sediment (apparently still soft when the flows were erupted. |
 | Left and below: the upper (eastern) squeezeup |
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 | Left and below: the lower (eastern) squeezeup. In both cases, the directions of folding and thrusting suggest flow from northeast to southwest. |
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Created 20 August 2007, Last Update 21 August 2007
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