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Mineral Resources > Online Spatial Data > Geology > by state > Iowa

Sioux Quartzite

Pink-colored fine grains of quartz sand cemented to non-porous quartzite of silica; contains some red slate; Rb-Sr dates > 1200 M.Y.
StateIowa
NameSioux Quartzite
Geologic ageProterozoic | Mesoproterozoic
Original map labelPCs
Primary rock typequartzite
Secondary rock typeslate
Other rock types
Lithologic constituents
Map references
Hershey H. G. 1969, Geologic Map of Iowa: Iowa Geological Survey, scale 1:500K
Unit references
Hershey H. G. 1969, Geologic Map of Iowa: Iowa Geological Survey, scale 1:500K
Geographic coverageCalhoun - Pocahontas

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URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=IApCAs;0
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