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Report upon United States geological surveys west of the one hundredth meridian, Volume III: Supplement -- geology
George Montague Wheeler, John J. Stevenson
1881, Report, Report upon United States Geographical Surveys West of the One Hundredth Meridian
The region examined during the seasons of 1878 and 1879 extends north to north latitude 37° 20, and embraces parts of North Central New Mexico, and South Central Colorado. It lies wholly east from the canon of the Rio Grande, includes the mountain area of the Spanish ranges to their...
Report on the geology of the high plateaus of Utah
C. E. Dutton, John Wesley Powell
1880, Report
In the year 1874 my kind friend Prof. J.W. Powell proposed to me that I should undertake, under his direction, the study of a large volcanic tract in the Territory of Utah, provided the consent of proper authority could be entertained. Distrusting my own fitness for the work, I...
Report of the Geological Exploration of the Fortieth Parallel, Volume I: Systematic Geology
Clarence King
1878, Report, Professional Papers of the Engineer Department, U.S. Army, No. 18
The Exploration of the Fortieth Parallel promised, first, a study and description of all the natural resources of the mountain country near the Union and Central Pacific railroads; secondly, the completion of a continuous geological section across the widest expansion of the great Cordilleran Mountain System....