(Excerpt from Geology and Ore Deposits of the Breckenridge...)
Excerpt from Geology and Ore Deposits of the Breckenridge District, Colorado A notable feature of the Continental Divide east of Breckenridge is the fact that much of it coincides with a gently rolling upland, which is evidently a remnant of a much older topog raphy than that represented by the cirques and ravines notching its edges. S. H. Ball 3 describes what appears to have been originally a part of the same upland, in the Georgetown quadrangle, whose southwest corner (latitude 39° longitude 105° lies 10 miles due east of the mouth of Georgia Gulch (pl. I, in pocket). Ball concluded that this upland dates from late Tertiary time, which is probably a moderate estimate of its antiquity. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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(Excerpt from The Geology and Ore Deposits of the Cœur D'a...)
Excerpt from The Geology and Ore Deposits of the Cœur D'alene District, Idaho Future of gold mining Descriptions of gold mines Golden Chest mine Introduction. Development. The lode The ore Ophir Mountain mines Buckeye Boy mine Crown Point mine. New Jersey mine. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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(This book was originally published prior to 1923, and rep...)
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
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(This book was originally published prior to 1923, and rep...)
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
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(Excerpt from Journal of the Washington Academy of Science...)
Excerpt from Journal of the Washington Academy of Sciences, Vol. 4: 1914 In the pocket-like Gulf of Alaska the rotation of the earth causes the water of the antarctic current to pile up, and to rise nearly, in the winter possibly in some places quite, to the sur face. Over the surface Of this cold antarctic water flows the wind impelled drift from the kuro-siwo, which divides, part of it skirting the northern part of the Gulf of Alaska, and part flow ing southward down the coast. The water Of the kuro-siwo drift and the antarctic water are of the same salinity, and there fore they mix readily. Hence the southern derivative from the Kuro - Siwo drift, the so-called California current, as it flows southward dissolves into itself the cold water of the antarctic stream immediately beneath it, presenting the curious phenom enon Of a current flowing southward, yet at the same time becoming colder and colder. In the southwestern portion of the basins of the Pacific, At lantic and Indian oceans the abyssal water slowly rises and, flowing southward, takes the place in the circumpolar antarctic circulation of the water lost thru the Humboldt, Benguela and Australian currents. In the central portion of the oceanic basins the general motion of the water is from east to west, the water lost from the currents flowing northward across the basins and being picked up by the southerly currents on the other side. This circulation is rapid in the high southern latitudes, diminishing in intensity northward. The water of the circumpolar west wind drift of low southern latitudes, north of the true antarctic current, is mainly surface water from the north caught up and driven forward by the strong wind. This west wind drift forms a band dividing the abyssal antarctic circulation from the superficial circulation further north. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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(Excerpt from Geology of the Globe Copper District, Arizon...)
Excerpt from Geology of the Globe Copper District, Arizona For the purposes of this report the Globe copper district may conveniently be considered as coextensive with the cartographic' unit adopted by this survey, Fm. L. - Index map. Showing position of the Globe quadrangle and the approximate outlines of the three principal physiographic divisions of Arizona. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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(Excerpt from Journal of the Washington Academy of Science...)
Excerpt from Journal of the Washington Academy of Sciences, 1913, Vol. 3 Sutherland's hypothesis avoids the difficulties pointed out by Rowland5 in 1879 as also some of those advanced in connection with other theories. Unfortunately, however, it thus far admits of no conclusive proof, chiefly for the reason that it leads to an expression for the magnetic potential precisely the same, as far as effects on or above the Earth's surface are concerned, whether the magnetic field be due to an elemental magnet at the center of the Earth, or to a uniformly magnetized sphere, or to an appro priate system of electric currents imbedded in the Earth, or to a rotating electrically charged sphere such as Sutherland supposed, or to a combination of these causes. Mathematically the mag netic fields ascribed to these various, distinct causes can not be differentiated from one another. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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(Economic Geology of the Silverton Quadrangle - Originally...)
Economic Geology of the Silverton Quadrangle - Originally Published in 1901 as USGS Bulletin 182 this publication is one of the rarest and most informative on the Geology, Mines and Ore Deposits of the Silverton Area in the San Juan Mountains of Colorado. All major mining districts covered along with over 100 mines discussed and may more prospects. Extensive information on the formation of the deposits. Now Back in print by Miningbooks.com
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(Excerpt from The Geology and Ore Deposits of the Bisbee Q...)
Excerpt from The Geology and Ore Deposits of the Bisbee Quadrangle, Arizona The geological field work upon which this report is based was begun in the middle of September, 1902, and finished late in December of the same year. Throughout this period efficient assistance was rendered by Dr. J. Morgan Clements and Mr. Alfred M. Rock. Mr. Clements is chiefly responsible for the careful mapping of the Cretaceous beds and of the Juniper Flat granitic area. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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( This work has been selected by scholars as being cultur...)
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
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Frederick Leslie was born on December 2, 1868 at Greenwich, near London, the son of Ernest L. and Mary Jane (Dawson) Ransome and the eldest of their eight children. In 1870 the family moved to San Francisco, where the father founded and directed a business in concrete machinery and construction which pioneered many of the developments in that great industry.
After boyhood in a home of comfortable means and attendance at the public schools, Ransome entered the University of California. Here he specialized in geology under A. C. Lawson, whose emphasis on field work he later continued. Graduating in 1893, he pursued further study and served as an assistant, receiving the doctorate in 1896.
He went to Harvard for a year as assistant in mineralogy and petrography. In 1897, at the age of twenty-nine, he entered the United States Geological Survey, the foremost geological organization in the world, and for twenty-six years he applied himself unostentatiously to the increasingly responsible tasks that gravitated to his capable execution.
Although by 1912 he had been advanced to major administrative posts and was in charge of the sections of Western areal geology and of metalliferous deposits, he steadfastly continued his own important field investigations. Between 1899 and 1920 he studied in detail and described, alone or with a collaborator, three of the country's foremost gold districts, Mother Lode, California, Cripple Creek, Colorado, and Goldfield, Nevada; the famed lead-silver region, Coeur d'Alene, Idaho; four great Arizona copper camps, Bisbee, Globe, Miami, and Ray; and nearly a score of lesser mining regions.
Perhaps no other geologist of the Survey has equalled this imposing record of accomplishment. Leaving the Survey when fifty-five, Ransome served for four years as professor of economic geology and part of that time as dean of the Graduate College at the University of Arizona. Then, from 1927 until his final illness, he was professor of economic geology on a part-time arrangement at California Institute of Technology.
His teaching disclosed the same soundness and systematic care that marked all his other activities. During his years in the West he engaged in consulting practice in connection with mine litigation and especially in connection with the vital Southwestern problems of irrigation and dam-site location. He served the Metropolitan Water District of Southern California, the United States Reclamation Service, the War Department, and the Mexican Government, in such undertakings as the Madden Dam of the Panama Canal, the Columbia River irrigation project, and the final location of Boulder Dam.
He served a term as president of the Society of Economic Geologists, the Geological Society of Washington, and the Washington Academy of Sciences, and as treasurer of the National Academy of Sciences. He lectured at the University of Chicago in 1907 and at Yale in 1913.
He was an associate editor of Economic Geology, and of the American Journal of Science, and was editor of geological terms for the new Webster's Dictionary.
Characteristic of the man's fortitude is the fact that his last piece of field work was brought to conclusion the day before he entered the hospital for an operation for cancer. He died in Pasadena in his sixty-seventh year.
Ransome's scientific contributions constitute a veritable library of monographs and map folios on important mining districts and on problems of water control. They are models of reliable description and literary clarity, for he was an alert observer and meticulous recorder, cogent in analysis and persuasive in argument. In addition to his publications relating to the ore districts noted above, may be mentioned "The Present Standing of Applied Geology", "The Directions of Movement and the Nomenclature of Faults", "Directions of Progress in Economic Geology", and "High Dams: The Viewpoint of the Geologist".
(Excerpt from Geology and Ore Deposits of the Breckenridge...)
(Economic Geology of the Silverton Quadrangle - Originally...)
(Excerpt from The Geology and Ore Deposits of the Bisbee Q...)
(Excerpt from Geology of the Globe Copper District, Arizon...)
(This book was originally published prior to 1923, and rep...)
(This book was originally published prior to 1923, and rep...)
(Excerpt from The Geology and Ore Deposits of the Cœur D'a...)
( This work has been selected by scholars as being cultur...)
( This work has been selected by scholars as being cultur...)
(Excerpt from Journal of the Washington Academy of Science...)
(Excerpt from Journal of the Washington Academy of Science...)
(Trade paperback)
Among the honors that came to him were election to the National Academy of Sciences, the American Philosophical Society, foreign correspondentship of the Geological Society of London, and honorary membership in the Société Géologique de Belgique.
In feature and frame Ransome was upright and angular. Thought, manner, even handwriting exhibited the same characteristics. Florid, with piercing eye and compelling voice, holding exacting standards for himself and caustically intolerant of others' lapses, he seemed to his younger associates and assistants a somewhat forbidding figure. In debate with his peers, whether spoken or written, his keen logic, courageous persistence, and command of words provided formidable equipment. His interest, moreover, centered in ideas rather than in people. Thus, true to his British origin, he was measurably austere and aloof, save in his family and with a few intimates. There was, however, universal recognition and respect for his sincerity, his appreciation of real merit, his abstract fairness, his restrained but deep humor, and an inner friendliness which the contacts of teaching disclosed. His lifelong avocation was the building and sailing of boats. In his work he was the personification of system and diligence. On the dot of nine he entered his office, donned office coat, removed papers from a drawer, and within two minutes was smoothly resuming the flow of writing where he had ceased at exactly twenty-eight minutes past four of the afternoon preceding. When he was in the field, the same methodical efficiency prevailed. Each day the pages of manuscript or the square-inches of mapping inexorably accumulated and with enviable perfection. In this organized mastery of body and mind lay Ransome's manifest power; but this very control was not conducive to creative imagination and intuitive insight. On the hillsides of the mining camp he was both happy and brilliant in deciphering structure, stratigraphy, petrography, and the sequence of geological events, and these he projected understandingly into the subsurface region opened by the mines, as constituting the grosser controls of ore localization. But in the dark and damp confinement underground, never completely at home, he captured less perfectly the secrets of the ores regarding subtile physicochemical process and relationship involved in their origin and elusive placement.
On May 25, 1899, at Washington, D. C. , he married Amy Córdoba Rock. They had four children - Janet, Susan Clarkson, Violet Jane, and Alfred Leslie.
