Annual Report for ... with Accompanying PapersPublished for the Iowa Geological Survey, 1893 - Geology |
Contents
STATISTICS OF MINERAL PRODUCTION | 33 |
GEOLOGY OF CARROLL COUNTY | 49 |
GEOLOGY OF HUMBOLDT COUNTY | 109 |
9 other sections not shown
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Common terms and phrases
artesian Atrypa bank beds Belle Plaine blue clay bluff bottom bowlder clay brick buff calcareous Carboniferous Carroll county Cedar Valley limestone chert coal measures color Coon Rapids Davenport deposits depth Devonian dolomitic drainage drift plain east erosion exposed exposures ferretto ferruginous Fire clay flood plain formation forms fossils Fruitland township G Rep Geological glacial gray hills Humboldt county Illinoian inches Iowa Iowan Kansan drift 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 tion upland upper weathering Wisconsin drift Yellow clay