1. C-24 Geologic Atlas of Sibley County, Minnesota [Part A] Datasets University Of Minnesota Public content 2011. Lusardi, B.A and Minnesota Geological Survey. Plate 2 Bedrock Geology, Plate 3, Surficial Geology, Scale 1:100,000. This atlas is a work in progress. Plates 1 and 2 were completed in 2010 as pa...