Annual Report for ... with Accompanying PapersPublished for the Iowa Geological Survey, 1907 - Geology |
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A. O. Anderson alumina Anamosa arenaceous argillaceous blue bluffs bluish brecciated brown buff building stone Burlington calcareous calcite carbonate Cedar Valley cent chert clay Clayton county Coal Measures color compact crushed stone crusher Devonian dimension stone Dolomite drift earthy evenly bedded exposed exposures feet in thickness fine-grained fossiliferous fossils Galena Geological granular gray hard heavy beds Hopkinton horizon inches in thickness indurated Iowa J. A. Green Keokuk kiln Kinderhook L. G. Michael laminated layers LeClaire ledges Lime Creek lithographic located loess Louis limestone lower Maquoketa marl Mason City material miles Missouri Moines Niagara northeast northwest Oölite Osage outcrops oxide plant Platteville Portland cement produced quarry quarry stone quarter of section river rock rubble Sand to Lime sandstone shales shaly showing silica slaking small quarries southwest quarter Stone City strata stream sub-crystalline texture thin beds township upper variable vesicular vicinity Wapsipinicon weathered White limestone yellow