Ancell Group

Orthoquartzitic sandstone with minor limestone, shale and conglomerate; includes Glenwood and St. Peter Formations
State Wisconsin
Name Ancell Group
Geologic age Ordovician
Lithologic constituents
Major
Sedimentary > Clastic > Sandstoneorthoquartzitic sandstone with minor limestone, shale and conglomerate; includes Glenwood and St. Peter Formations
Minor
Sedimentary > Carbonate > Limestoneorthoquartzitic sandstone with minor limestone, shale and conglomerate; includes Glenwood and St. Peter Formations
Incidental
Sedimentary > Clastic > Conglomerateorthoquartzitic sandstone with minor limestone, shale and conglomerate; includes Glenwood and St. Peter Formations
Sedimentary > Clastic > Mudstone > Shaleorthoquartzitic sandstone with minor limestone, shale and conglomerate; includes Glenwood and St. Peter Formations
References

Mudrey, M.G., Jr., Brown, B.A., and Greenberg, J.K., 1982, Bedrock Geologic Map of Wisconsin: University of Wisconsin-Extension, Geological and Natural History Survey, scale 1:1,000,000.

NGMDB product
Counties Buffalo - Columbia - Crawford - Dane - Dodge - Fond du Lac - Grant - Green - Green Lake - Iowa - Jefferson - Lafayette - Marinette - Oconto - Outagamie - Pierce - Richland - Rock - Saint Croix - Shawano - Vernon - Winnebago