Sioux Quartzite Boulder

Sioux Quartzite Boulder (HMWTD)

Location: Topeka, KS 66615 Shawnee County
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Country: United States of America
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N 39° 3.376', W 95° 46.501'

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This large boulder was carried to Kansas by a glacier several thousand feet thick about 700,000 years ago during the Pleistocene (Ice) Age. The boulder was plucked from a bedrock source, the nearest located in southeastern South Dakota or northwestern Kansas by glaciers.

This particular boulder is made of a rock known as Sioux quartzite. Quartzite is sandstone that has been subjected to heat and pressure, and has been cemented with silica. Sioux quartzite is almost 100% quartz, so it resists erosion. It weighs 10.4 tons.
Placed ByKansas Historical Society
Marker ConditionNo reports yet
Date Added Wednesday, October 22nd, 2014 at 8:29am PDT -07:00
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Locationbig map
UTM (WGS84 Datum)15S E 259877 N 4326686
Decimal Degrees39.05626667, -95.77501667
Degrees and Decimal MinutesN 39° 3.376', W 95° 46.501'
Degrees, Minutes and Seconds39° 3' 22.56" N, 95° 46' 30.06" W
Driving DirectionsGoogle Maps
Area Code(s)785
Closest Postal AddressAt or near 6425 SW 6th Ave, Topeka KS 66615, US
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