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Sioux Quartzite

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Pink and reddish to tan, siliceous, fine- to coarse-grained, iron-stained orthoquartzite with minor metamorphosed conglomerate and mudstone layers. Estimated thickness greater than 1,000 ft (305 m).
State South Dakota
Name Sioux Quartzite
Geologic age Lower Proterozoic
Lithologic constituents
Major
Metamorphic > Metasedimentary > Metaclastic > QuartzitePink and reddish to tan, siliceous, fine- to coarse-grained, iron-stained orthoquartzite
Minor
Metamorphic > Metasedimentary > Metaclastic > Metaconglomerate
Metamorphic > Metasedimentary > Metaclastic > SlateMetamorphosed mudstone.
References

Tomhave, D.W., and Schulz, L.D., 2004, Bedrock Geologic Map Showing Configuration of the Bedrock Surface in South Dakota East of the Missouri River, South Dakota Geological Survey, GM 9, scale 1:500,000.
NGMDB product
Counties Brookings - Hanson - Hutchinson - Lake - Lincoln - McCook - Miner - Minnehaha - Moody - Turner