Samuel Franklin Emmons

Samuel Franklin Emmons (March 29, 1841 – March 28, 1911) was an American geologist, director of the Rocky Mountain Division of the United States Geological Survey, and president of the Geological Society of America for the academic year 1903–1904. He was elected in 1892 a member of the U.S. National Academy of Sciences. The mineral emmonsite, Mount Emmons (Colorado) Mount Emmons, Colorado, and Mount Emmons (Utah) Mount Emmons, Utah, are named after him. Quotes Attention was first called to the mineral wealth of the Rocky Mountains Rocky Mountain region by the discovery of gold in California. The greater part of this gold, which in the first few years was obtained in such amount as to produce a marked change in the purchasing power of gold throughout the world, was obtained by the most primitive of all methods of mining, and one which has been practices probably even before historic times. The application of a few simple scientific principles to this primitive method of mining has originated another truly American process, that of hydraulic mining, where the Gold panning gold pan and Placer mining#Sluice box sluice box of the gold-washer are replaced by the “Little Giant,” by which a single man is able to bring the force of a rivre to bear directly upon the side of a mountain. Meeting of January 2d, 1883. Address of the President, S. F. Emmons (Read by the Secretary, Whitman Cross) The Proceedings of the Colorado Scientific Society 1884 1 https://books.google.lu/books?hl=de&id=36_OAAAAMAAJ&pg=PA4 3–12 (quote from p. 4) The Mosquito Range, the study of whose geological structure formed a necessary basis for that of the ore deposits of the Leadville, Colorado Leadville region, in the western boundary of the South Park (Park County, Colorado) South Park, and has thus been considered from a topographical standpoint to form part of the Park Range (Colorado) Park Range. Geology shows, however, that in Paleozoic times the boundary of the depressions now known as the Parks was formed by the Archean masses of the Colorado Range on the east and of the Sawatch Range Sawatch and its continuation in the north, the Park Range on the west, and that the uplift of the Mosquito Range did not occur until the close of the Cretaceous. Brief Outline of Results Geology and Mining Industry of Leadville, Colorado Volume 12 of Geological Survey United States: Monographs of the United States Geological Survey; Volume 49 of Miscellaneous Documents of the House of Representatives, United States House of Representatives; Western Americana U.S. Government Printing Office 1886 https://books.google.com/books?id=8A2jc1L0bhAC&pg=PR29 (770 pages) When Josiah Whitney Whitney wrote his ‘’Metallic Wealth of the United States’’, in 1854, the financial conditions of the world were being seriously disturbed by the almost simultaneous development of the Placer mining placer mines of California and Australia which together had added at a bound $120,000,000 to the world's annual production of gold without any corresponding increase in the increase in the production of silver. At that time and for many years afterward there was no "proper silver mine" within our territory, and it is hardly to be wondered at that he considered, in the light of the world's experience up to that time, silver to be better adapted for a standard of value than gold, since it appeared to be less susceptible to violent fluctuations in its production. David Talbot Day Day, David Talbot 1893 Progress of the Precious Metal Industry in the United States by S. F. Emmons Mineral Resources of the United States: Calendar Year 1892 U.S. Government Printing Office https://books.google.com/books?id=As0y6V4C9v8C&pg=PA47 46-94 (quote from p, 47) Seventy-five miles south of the Mexico–United States border International Boundary in the Valley of the Moctezuma River, in Sonora, Mexico, lies the picturesquely situated town of Nacozari de García Nacozari, which has grown up during the last six or seven years around the concentration works that dress the Copper#Occurrence copper ores from the neighboring mine known as Los Pilares.This mine, whose economic importance may be gauged by the fact that it has already produced over 600,000 tons of copper ore, is one of the many copper properties in the southwest owned and managed by the Phelps Dodge Phelps-Dodge & Company interests. 1906 Los Pilares Mine, Nacozari, Mexico Economic Geology 1 7 629–643 https://ia600805.us.archive.org/view_archive.php?archive=/13/items/crossref-pre-1909-scholarly-works/10.2113%252Fgsecongeo.1.1.11.zip&file=10.2113%252Fgsecongeo.1.7.629.pdf The only systematic exploration of the Uinta Mountains entire range was made by the Geological Exploration of the Fortieth Parallel Fortieth Parallel party under my charge, in the summers of 1869 and 1871. In the same years Powell made Powell Geographic Expedition of 1869 his famous explorations of the canyons of the Colorado River Colorado, and in so doing traversed the eastern end of the range in his boat journeys down the meandering canyons of the Green River (Colorado) Green river.In the summer of 1871 Hayden made a hasty reconnaissance along the northern slopes of the range, penetrating the central core at a single point near the head of Blacks fork, where he found Carboniferous fossils in the flanking limestones and “suspected” that the underlying quartzites might be Silurian from their resemblance to the Potsdam Sandstone Potsdam sandstones. During the seasons of 1874 and 1875 Powell headed parties that studied the geology of the eastern part of the range and the surrounding Cretaceous and Tertiary period Tertiary regions. From that time until 1903 there is no record of any geological study of the range.At the time when the 40th parallel north Fortieth Parallel field work was being carried on, what was known of the geology of the North American Cordillera Cordilleran region was mainly derived from observations of geologists accompanying military expeditions, generally as surgeons. Uinta Mountains Bulletin of the Geological Society of America 1907 18 1 287–302 https://ia600805.us.archive.org/view_archive.php?archive=/13/items/crossref-pre-1909-scholarly-works/10.1130%252Fgsab-10-121.zip&file=10.1130%252Fgsab-18-287.pdf (quote from p. 289) External links Arnold Hague, Biographical Memoir of Samuel Franklin Emmons 1841-1911 BIographical Memoirs of the U.S. National Academy of Sciences VII 1912 307–334 https://coloscisoc.org/wp-content/uploads/2020/01/emmons-samuel.pdf Category:American geologists Category:1841 births Category:1911 deaths Category:Geologists from the United States Category:Harvard University alumni Category:Members of the United States National Academy of Sciences Category:Scientists from Boston