Publication, Issue 9; Issue 12The Survey, 1913 - Biology |
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Anderdon Ann Arbor annual Arkona average basin beach bedrock belt boulders Brownstown Buren calcium calcium carbonate Canton Canton township carbonate channel Clair corner delta deposits depth Detroit moraine Detroit River dolomite drainage Dundee east eastern eastward Ecorse elevation feet above sea flow formation formed fossils glacial clay glacial lakes Grosse Isle Hamtramck Huron ice sheet Illinoian inches Joseph Fletcher Lake Chicago Lake Erie Leverett limestone Livonia loam lower Michigan miles Monguagon Monroe County moraine northeastward Northville Oakland County Ohio Onondaga Ontario oxide Plymouth portion precipitation region Report Rouge salt shaft sandstone sea level shale shows Sibley quarry slope soil southeastern Michigan southern species stage of Lake strata stream sulphur supply surface Survey of Michigan Sylvania TABLE temperature thickness tion Township lines U. S. Geological Survey Upper Washtenaw County Wayne County western Whittlesey wind Wisconsin ᏚᎳ ᏚᎳ
Popular passages
Page 165 - Since then, in addition to the well-known eleven-year period of sunspot frequency, there is another cycle which extends over about thirty-five years, and which is indicated clearly, as has been shown, both by the changes in the times of the occurrence of the epochs of maxima and in the variations in area included in consecutive eleven-year periods of both sunspot and magnetic curves, it is only natural to suppose that this long-period variation is the effect of a cycle of disturbances in the sun's...
Page 136 - DAY, PC Summary of the Climatological Data for the United States by Sections. Section 33, Western South Dakota. 7 pp., 1909.
Page 244 - Isle well first began in 1903, but returned soon after the insertion of the casing, only to cease again after its withdrawal in May, 1904. This interpretation, however, seems opposed by the fact that numerous other wells much nearer Grosse Isle maintained nearly their usual flow, those nearest, even those on Grosse Isle itself, showing no decrease whatever. The conditions of underground drainage would need to be very exceptional, which would leave a near-by district unharmed while seriously affecting...
Page 246 - ... when dried out may, to a certain extent, crumble and become more or less clogged, so that their capacity for carrying water is lessened or destroyed even when the ground again becomes soaked. The return in any case will probably not be complete, as the thorough ditching which the region has undergone will result in a permanent lessening of the water supply of the region. The wells in the lower Huron River region obtain their supplies largely in the upper few feet of the rock.
Page 242 - ... series, where they dissolve the solid rock salt and flow to the surface. The salt is then secured by evaporation or used in the manufacture of soda, soda ash, and bleaching powder. The most promising horizon for securing a supply of fresh water is the Sylvania sandstone, a porous bed of pure sand rock holding an abundance of water. Although fresh, it is liable to contain sulphur and iron, carried up from the dolomites of the underlying Monroe group. In the northern part of Monroe County and the...
Page 366 - ... and faunas of the Columbus limestone of Northern Ohio and their bearing on the problem of the Dundee of southern Michigan. In northwestern Ohio, where the rocks represent the direct continuation of the Michigan beds, the Columbus limestone is a fossiliferous gray limestone in the upper part, passing downward into a sparingly fossiliferous brown limestone, resembling the lower part of the same formation in central Ohio. The total thickness probably does not exceed 60 feet. The series rest disconformably...
Page 183 - We come now to a series of strata which have been carefully studied in outcrop, were penetrated in the Oakwood salt shaft and of which we have numerous well records, based upon actual samples of the drillings. The first of these is the Dundee limestone, one of the first to be recognized in the state and utilized for building purposes and in the manufacture of lime.
Page 245 - Rockwood region. Low stage of streams. — The level of streams generally determines that of the ground water in their vicinity, the latter subsiding as the streams fall. During 1904 both Huron River and Swan Creek were unusually low, and thus drew unusual quantities from the surrounding water table, which was thereby naturally lowered. Huron River, being a longer stream, and one having its source in a region of greater rainfall, was not so low as Swan Creek, the entire course of which is within...
Page 167 - Alexander Winchell, in 1873, read a paper before the American Association for the Advancement of Science entitled "The Diagonal System of the Physical Features of Michigan.
Page 246 - ... of the ground, the increase in the available water may not be immediately noted. The . full supply may not return until a wet year, or perhaps a succession of wet years, occurs. In some cases the return of the water may not bring restoration to the wells, for water passages in clayey...