The Geography of the Region about Devil's Lake and the Dalles of the Wisconsin
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The Geography of the Region about Devil's Lake and the Dalles of the Wisconsin - Wallace W. Atwood
The Project Gutenberg EBook of The Geography of the Region about Devils
Lake and the Dalles of the Wisconsin, by Rollin D. Salisbury and Wallace W. Atwood
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Title: The Geography of the Region about Devils Lake and the Dalles of the Wisconsin
Author: Rollin D. Salisbury
Wallace W. Atwood
Release Date: November 27, 2011 [EBook #38148]
Language: English
*** START OF THIS PROJECT GUTENBERG EBOOK THE GEOGRAPHY OF THE REGION ***
Produced by David Edwards, Joanna Johnston and the Online
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Wisconsin Geological and Natural History Survey.
THE GEOGRAPHY
OF THE
REGION ABOUT DEVIL'S LAKE
AND THE
DALLES OF THE WISCONSIN,
With Some Notes on Its Surface Geology.
BY
ROLLIN D. SALISBURY, A. M.,
Professor of Geographic Geology, University of Chicago,
AND
WALLACE W. ATWOOD, B. S.,
Assistant in Geology, University of Chicago.
MADISON, WIS.
Published by the State.
1900.
Wisconsin Geological and Natural History Survey.
BOARD OF COMMISSIONERS.
Edward Scofield,
Governor of the State.
L. D. Harvey,
State Superintendent of Public Instruction.
Charles K. Adams, President,
President of the University of Wisconsin.
Edwin E. Bryant, Vice-President,
President of the Commissioners of Fisheries.
Charles S. Slichter, Secretary,
President of the Wisconsin Academy of Sciences, Arts, and Letters.
E. A. Birge, Director of the Survey.
C. R. Van Hise, Consulting Geologist.
E. R. Buckley, Assistant Geologist.
In charge of Economic Geology.
S. Weidman, Assistant Geologist.
In charge of Geology of Wausau District.
L. S. Smith, in charge of Hydrography.
S. V. Peppel, Chemist.
F. R. Denniston, Artist.
Frontispiece
See larger image
CONTENTS.
LIST OF ILLUSTRATIONS.
PART I.
THE TOPOGRAPHY.
WITH SOME NOTES ON THE SURFACE GEOLOGY.
GEOGRAPHY AND SURFACE GEOLOGY OF THE DEVIL'S LAKE REGION.
CHAPTER I.
GENERAL GEOGRAPHIC FEATURES.
This report has to do with the physical geography of the area in south central Wisconsin, shown on the accompanying sketch map, Plate I. The region is of especial interest, both because of its striking scenery, and because it illustrates clearly many of the principles involved in the evolution of the geography of land surfaces.
Generally speaking, the region is an undulating plain, above which rise a few notable elevations, chief among which are the Baraboo quartzite ranges, marked by diagonal lines on Plates I and II . These elevations have often been described as two ranges. The South or main range lies three miles south of Baraboo, while the North or lesser range, which is far from continuous, lies just north of the city.
The main range has a general east-west trend, and rises with bold and sometimes precipitous slopes 500 to 800 feet above its surroundings. A deep gap three or four miles south of Baraboo (Plates II, V, and XXXVII) divides the main range into an eastern and a western portion, known respectively as the East and West bluffs or ranges. In the bottom of the gap lies Devil's lake (i, Plate II and Plate XXXVII), perhaps the most striking body of water of its size in the state, if not in the whole northern interior. A general notion of the topography of a small area in the immediate vicinity of the lake may be obtained from Plate XXXVII.
The highest point in the range is about four miles east of the lake, and has an elevation of more than 1,600 feet above sea level, more than 1,000 feet above Lake Michigan, and about 800 feet above the Baraboo valley at its northern base. The eastward extension of the west range (Plate XXXVII) lying south of the lake, and popularly known as the Devil's nose, reaches an elevation of a little more than 1,500 feet.
The lesser or North quartzite range (Plate II) rises 300 feet to 500 feet above its surroundings. It assumes considerable prominence at the Upper and Lower narrows of the Baraboo (b and c, Plate II, c, Plate XXXVII and Plate IV). The North range is not only lower than the South range, but its slopes are generally less steep, and, as Plate II shows, it is also less continuous. The lesser elevation and the gentler slopes make it far less conspicuous. About three miles southwest of Portage (Plate II) the North and South ranges join, and the elevation at the point of union is about 450 feet above the Wisconsin river a few miles to the east.
The lower country above which these conspicuous ridges rise, has an average elevation of about 1,000 feet above the sea, and extends far beyond the borders of the area with which this report is concerned. The rock underlying it in the vicinity of Baraboo is chiefly sandstone, but there is much limestone farther east and south, in the area with which the Baraboo region is topographically continuous. Both the sandstone and limestone are much less resistant than the quartzite, and this difference has had much to do with the topography of the region.
The distinctness of the quartzite ridges as topographic features is indicated in Plate XXXVII by the closeness of the contour lines on their slopes. The same features are shown in Figs. 1 and 2, which represent profiles along two north-south lines passing through Baraboo and Merrimac respectively.
WISCONSIN GEOL. AND NAT. HIST SURVEY. BULLETIN NO. V., PL. I.
General map showing the location of the chief points mentioned in this report. The location of the area shown in Plate XXXVII, centering about Baraboo, is indicated.
See larger image
WISCONSIN GEOL. AND NAT. HIST. SURVEY. BULLETIN NO. V., PL. II.
Map of Area considered in this Report.
See larger image
Fig. 1. -- Profile along a line extending due north and south from Baraboo across the north and south ranges. The dotted continuation northward represents the extension of the profile beyond the topographic map, Plate XXXVII.
See larger image
Fig. 2. -- Profile north from Merrimac across the quartzite ranges. The dotted continuation northward represents the extension of the profile beyond the