Contact at Grand Marais, Minnesota

Steven Dutch, Natural and Applied Sciences, University of Wisconsin - Green Bay
First-time Visitors: Please visit Site Map and Disclaimer. Use "Back" to return here.

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
Left and below: the lower (eastern) squeezeup. In both cases, the directions of folding and thrusting suggest flow from northeast to southwest.

Return to Virtual Field Trips Index
Return to Professor Dutch's Home Page

Created 20 August 2007, Last Update 01 July 2012

Not an official UW Green Bay site