Geology of Scott County, Iowa, and Rock Island County, Illinois, and the Adjacent Territory: Showing the Geographical and Vertical Range of the Fossils of the Niagara, Corniferous, and Hamilton Groups of Rocks, and the Chemung Group at Burlington, Iowa : with Supplement
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Geology of Scott County, Iowa, and Rock Island County, Illinois, and the ...
A. S. Tiffany
No preview available - 2015
arenaceous Atrypa beds Billings Cor bluff Cedar River Chemung Chonetes Claire clay coal shales coal-measures conglomerate sand-rock Conrad Chem Conrad Cor Conrad H Corniferous Creek Crinoid Crinoid joints Cyrtoceras Davenport deposited Devonian eroded basin erosion even-bedded fault fifty feet formation forty feet Grit Guelph Half a mile Hall Chem Hall Cor Hall H Hall Ni Hall Port Hall Scho Hall Tr Hamilton group Helder hundred feet Illinois inches Iowa Le Claire lime low water lower Meristella miles east miles west Mississippi River mucronata Niagara limestone Niagara rocks Nicholson Cor numerous outliers Oolite Orthis outcrop Pleurotomaria Port Byron Proetus Prof quarry ravine reticularis Rock Island County Rominger Cor Rominger H rough Scott County shales Silurian slope soft Solon Sowerby species undetermined Spirifera stone Straparollus strata range stratum Strophodonta thickness thin strata thirty feet Township Tully undetermined species upper Valley Wapsipinecon Water-lime group Worthen York Chemung
Page 11 - Being thus protected by the older and harder Niagara rocks, they have escaped subsequent erosion, while the higher
Page 1 - adjacent territory. SHOWING THE GEOGRAPHICAL AND VERTICAL RANGE OF THE FOSSILS OF THE NIAGARA,
Page 7 - At Fulton City the upper part of the quarry, at least, is a friable yellow-colored or ocherous limestone, sometimes porous or
Page 7 - About a mile above Sterling, on the north bank of the river, a series of Niagara quarries are extensively worked. The formation here is worked down about thirty-five feet, and the rock is full of
Page 11 - below the ocean again, the deposition of the rocks under consideration took place, filling the
Page 14 - was at last rewarded, in February, 1882, by finding great numbers of fossils in
Page 21 - No fossils have been published as having been collected in the Corniferous or Upper Helderberg in either of these counties in the
Page 1 - AND HAMILTON GROUPS OF ROCKS, AND THE CHEMUNG GROUP AT BURLINGTON, IOWA.