Waupaca: County K Outcrops
Steven Dutch, Professor Emeritus, Natural and Applied Sciences, University of Wisconsin - Green Bay
About 5 km east of Waupaca on County K are some wholly nondescript meta-igneous rocks. They are of interest chiefly because they provide some of the few clues to the pre-Wolf River Batholith geology south of the batholith.
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The terrain around the outcrops is flat and devoid of
landmarks except for this curve. The photos below show the outcrops, which
are scattered for a hundred meters or so either side of the road.
Some of the outcrops are brick-red on the surface, suggesting that they were in a fire at some time. Considering how rare Precambrian outcrops are in this part of Wisconsin, this is a maddeningly bland locality. |
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The Rocks
The rocks are fine-grained and weakly foliated, with subvertical SE foliation roughly parallel to the outcrop trends. They appear to be deformed Penokean granitic rocks.
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Created 14 May 2002, Last Update 11 Jan 2020