Iowa Geological Survey, Volume 16Published for the Iowa Geological Survey, 1906 - Geology |
Common terms and phrases
argillaceous Atkinson beds Black Hawk county blue bluffs Bluffton border bowlders Bremer county buff calcareous Canoe creek Cedar Falls Cedar river Cedar Valley chert clay Clayton county cliffs color common Decorah deposits depth Devonian dolomite drift plain Dubuque county east erosion exposed exposure Fayette flood plain formation Fort Atkinson fossils Galena Galena limestone glacial grains gravel gray Hesper hills horizon inches indurated Iowan drift Iowan ice Kansan drift layers ledges lime limestone loess lower Maquoketa shale material miles moraine Niagara limestone northeast northwest quarter occur Oneota Orthis outcrops overlying paha Peter sandstone places Platteville Pleistocene portion prairie quarry quarter of section ridge road rock Saint Peter Saint Peter sandstone sand shale shaly side slopes soil southeast southwest species stage stone strata stream surface thin tion topography town township Turkey river upland Upper Iowa Wapsipinicon Waverly weathered Winneshiek county Wisconsin woods yellow
Popular passages
Page 9 - Government is devoted chiefly to paying salaries of the permanent employees, a small portion of it being expended on general' administration and a considerable portion on field and office work. The field work of the cooperative topographic surveys is invariably in charge of topographers or assistant topographers of the United States Geological Survey, who are appointed, on the recommendation of the United States Civil Service Commission, by the Secretary of 10 ADMINISTRATIVE REPORTS.
Page 360 - ... south 31 degrees 38 minutes west 231.8 feet ; thence west 120.0 feet ; thence south 1 degree 30 minutes west 204.6 feet ; thence north 65 degrees 16 minutes west 766.7 feet to the west line of said section 19; thence north 522.4 feet to the point of beginning, containing 246.0 acres. A tract of land in the northwest quarter of the northeast quarter of section 13, township 6 north, range 1 east, Salt Lake base and meridian, being more particularly described as follows : Beginning at the southwest...
Page 142 - ... bank; and where observed it contains much fossil resin. At places, however, it showed on fresh fracture a pitchy-black luster, and was so tenacious as to be very hard to pick out with the hammer. COAL BEDS. Hayden openings. — A mile or more northwest of Hayden a number of Laramie coal seams show in the face of the bluff on the north side of the river. One of these when dug out showed a seam about 5 feet in thickness of bright-black coal, seemingly of light weight. This coal contained much fossil...
Page 9 - The appropriations made by the states for co-operative surveys are accepted chiefly for actual field work, in which are included the services of temporary employees, who are usually residents of the state, and for the living and traveling expenses of the field force.
Page 519 - ... of freezing is exerted upon them, acting from the center of the lake in all directions towards its circumference. Those who are familiar with the expansive power of ice in the act of forming, will readily see that under such circumstances it would be more than sufficient to move the largest boulder up the gentle slope of the bed of the lake. It is true that the motion resulting from one winter's freezing would hardly be perceptible, but the act repeated from year to year, and from century to...
Page 10 - The hydrography, or water, printed in blue, including all lakes, rivers, streams, swamps, marshes, reservoirs, springs, etc. 3. The relief, or surface forms, printed in brown, including the shapes of the hills, valleys, and ravines, their elevations and depressions, and the slopes of every rise or fall in the surface of the land. The topographic maps produced by cooperative surveys are engraved on. copper and printed from stone. The cooperating States have the benefit of this publication without...
Page 10 - Public culture, printed in black, including roads, lanes, paths, railroads, streets, dams, public boundaries, names, etc. "2. The hydrography, or water, printed in blue, including all lakes, rivers, streams, swamps, marshes, reservoirs, springs, etc. " 3. The relief, or surface forms, printed in brown, including the shapes of the hills, valleys and ravines, their elevations and depressions, and the slopes of every rise or fall in the surface of the land.
Page 10 - The field work of the co-operative topographic surveys is invariably in charge of topographers or assistant topographers of the United States Geological Survey, who are appointed, on the recommendation of the United States Civil Service Commission, by the honorable Secretary of the Interior. All assistant surveyors, as levelmen, transitmen, etc., and such helpers as rodmen, teamsters and cooks, are employed, under regulations of the Department of the Interior, in the locality in which the work is...
Page 418 - ... nearly equal streams, the Cedar from the north and east, the Shell Rock from the northwest and the West Fork from the west. The two latter, however, effect a junction about one mile above their junction with the Cedar. From this point, which is within a mile and a half of the north line of the county, the Cedar pursues its way, in size and importance second only to the Des Moines among the rivers within the borders of Iowa. Excepting for a short distance below the dam at Cedar Falls and also...
Page 75 - ... sandstone phase is overlain by a bed of shale fully fifteen feet in thickness, and the lower eight or ten feet of this is highly arenaceous. Some thin bands at intervals of a foot or more are almost pure sand. The sand grains in the shale are of the same clear, worn and polished type as those making up the main body of the sandstone deposit. The upper part of the shale bed is quite free from sand and resembles the "basal shale" referred to the Trenton series in Allamakee and Dubuque.