File:Underground water resources of Iowa (1912) (14789937033).jpg

Identifier: undergroundwater00nort (find matches)
Title: Underground water resources of Iowa
Year: 1912 (1910s)
Authors: Norton, William Harmon, b. 1856 Hendrixson, Walter Scott, 1859- (from old catalog) joint author Simpson, Howard E. (Howard Edwin), 1874-1938, joint author Meinzer, Oscar Edward, 1876- (from old catalog) joint author Iowa. Geological survey. (from old catalog)
Subjects: Water-supply
Publisher: Washington, Govt. print. off.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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hand iscorrect, the Pennsylvanian series on the uplands near the MissouriState line may attain a thickness of about 1,400 feet. Of the Paleozoic terranes underlying the Pennsylvanian series verylittle has been disclosed by deep wells. At Bedford the Mississippianseries appears to be at least 300 feet thick, not including a basal shalewhich is probably Kinderhook but which may be Devonian. Belowthe shale are about 200 feet of argillaceous limestones, red or pink inthe lower portion, which rest on water-bearing dolomites and anhy-drite marls that continue to a depth of at least 2,400 feet from thesurface. Like the gypseous beds of eastern Iowa, they are referred tothe Silurian. At Glenwood the succession is similar. Below thesandstone at the base of the Pennsylvanian lie the cherty limestonesand basal shales of the Mississippian, resting on water-bearingdolomites. At Dunlap, on the north line of this area, a deep well36581°—wsp 293—12 57 897 898 UNDERGROUND WATER RESOURCES OF IOWA.
Text Appearing After Image:
Feet.1100 - loon- 900- 800- 700- 6004 1 500- 400 4300-2011 -100 40-100-200- 900 • 1000- uoo j 1200 ■ U. S GEOLOGICAL SURVEY Glenwood ®S^-ii Pleistocene - 60 miles WATER-SUPPLY PAPER 293 PLATE 600- 500- ■j-rt-rc Missouri group Des Moines group Sea level Mississippian Devonian (?) Silurian GEOLOGTG SECTION BETWEEN BEDFORD AND GLENWOOD, IOWABv W. H. Nortorv SOUTHWEST DISTRICT. 899 reached the Mississippian at 569 feet above sea level, and at 416 feetbelow sea level a calciferous sandstone or arenaceous dolomite whichmay be referred either to the St. Peter or to some lower terrane. Thepresence at 194 feet below sea level of a green shale resembling thegreen shales of the Platteville favors the latter reference; but the factthat the dolomite intervening between the shale and the supposedSt. Peter is not arenaceous lends some countenance to the formerhypothesis. At Lincoln, Nebr., the State well, 2,463 feet deep, left the Pennsyl-vanian at 40 feet above sea level and entered the St.

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