Annual Report for ... with Accompanying PapersPublished for the Iowa Geological Survey, 1906 - Geology |
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Atkinson beds Black Hawk county blue bluffs Bluffton border bowlders Bremer county buff Calmar Calvin Canoe creek Cedar Falls Cedar river Cedar Valley channel chert clay Clayton county color common Decorah Decorah Savage deposits depth Devonian dolomite drift plain Dubuque county east erosion exposed exposure Fayette feet Fitzpatrick flood plain Fork formation Fort Atkinson fossils Galena Galena limestone glacial grains gray Hesper hills horizon inches Iowan drift Jackson county Kansan drift layers ledges lime limestone loess lower magnesian Maquoketa shale material Michx miles Niagara limestone northeast northwest quarter occur Oneota outcrops paha Peter sandstone places Pleistocene portion prairie quarry quarter of section ridges road rock Saint Peter Saint Peter sandstone sand shale side slopes soil southeast southwest species stage stone strata stream surface thickness thin topography town township Turkey river upland upper Wapsipinicon Waverly weathering Winneshiek county woods yellow