Annual Report for ... with Accompanying PapersPublished for the Iowa Geological Survey, 1899 - Geology |
Other editions - View all
Common terms and phrases
artesian Atrypa bank beds Belle Plaine blue clay bluff bottom bowlder clay brick buff calcareous Carboniferous Carroll Carroll county Cedar Valley limestone chert coal measures Coon Rapids Davenport deposits depth Devonian dolomitic drainage drift plain east erosion exposed exposures feet ferretto ferruginous flood plain formation forms fossils frequent Fruitland township G Rep Geological glacial gray hills Humboldt county Illinoian inches Iowa Iowan Kansan drift lake land layers leached ledges lime loess lower material miles Mississippi Moines Montpelier moraine Mud creek Muscatine county occur outcrops pebbles Pine creek places Pleistocene quarry quarter of section region rock sand and gravel sandstone sandy Scott county seam seen shale silt Skunk river slope soil southwest Spirifer stone Story county strata stream surface Surv Sweetland creek Tama terrace thickness topography township upland upper Wapsipinicon weathering Wisconsin drift Yellow clay