Annual Report for ... with Accompanying PapersPublished for the Iowa Geological Survey, 1898 - Geology |
Other editions - View all
Common terms and phrases
Athyris subtilita beds Bethany blue bluff bowlder clay Bremen township brick Buchanan county Buchanan gravels building stones calcareous cement chert coal measures color Decatur county Delaware county deposits depth Devonian dolomite drab drainage Driftless area Earlham east Elk creek Elk township erosion exposed exposures Favosites ferruginous formation fossiliferous fossils G Rep Grand river granite gray hills horizon inches Iowa Iowa Geol IOWA GEOLOGICAL SURVEY Iowan ice Kalb Kansan drift layers ledges lime loess Maquoketa material miles mill Milo township Moines Niagara limestone northeast occur outcrops oxidation pennatus Pentamerus Plate Pleistocene Plymouth county points portion prairie quarry stone quarter of section Raccoon region Richland township rock sand sandstone sandy shales shows slopes soil South Fork township southeast southwest quarter species Spirifer stream surface Surv terrace tests thin tion topography Union township upland upper usually valley Wapsipinicon weathered Winterset