A spectacular contact between Keeweenawan volcanic rocks and interflow
sediments is exposed in a road cut just southwest of Grand Marais,
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|
|Left and below: the lower (eastern) squeezeup. In both cases, the directions of folding and thrusting suggest flow from northeast to southwest.|
Created 20 August 2007, Last Update 01 July 2012
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