Glaciers Marked the Rock

Glaciers Marked the Rock (HM2LP0)

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N 44° 5.502', W 95° 3.032'

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This outcropping is an "erosional high"-rock
smoothed off by glaciers.

Continental glaciers advanced and retreated across this region many times in the last million years, before leaving for good about 12,000 years ago. This
extremely hard quartzite rock provides a unique record of glacial history. Individual glaciers, each carrying a bottom layer of rocks and moving in a separate direction, made the crisscrossed lines that you see here. Other rock retains evidence of only the most recent glacier.

Ancient Rivers

The many fipple marks seen here were formed by currents in an ancient river. Shallow river currents, like those pictured above, were rapidly covered by
mud and then subjected to heat and pressure for millions of years. The deposited sands of the river gradually solidified into sandstone and then into the quartzite you see today.
HM NumberHM2LP0
Placed ByMinnesota Historical Society
Marker ConditionNo reports yet
Date Added Thursday, October 10th, 2019 at 8:01am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)15T E 335852 N 4884102
Decimal Degrees44.09170000, -95.05053333
Degrees and Decimal MinutesN 44° 5.502', W 95° 3.032'
Degrees, Minutes and Seconds44° 5' 30.12" N, 95° 3' 1.92" W
Driving DirectionsGoogle Maps
Closest Postal AddressAt or near , ,
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