Author: Waldemar Lindgren Publisher: Forgotten Books ISBN: 9780656231287 Category : Science Languages : en Pages : 452
Book Description
Excerpt from Report of Progress in the Geological Resurvey of the Cripple Creek District, Colorado The Cripple Creek gold deposits were discovered in 1891. Shortly afterwards, in 1894, an examination of the new district was undertaken by the United States Geological Survey, Mr. Whitman Cross having charge of geology and petrography and Mr. R. A. F. Penrose, ir., undertaking the examination of the mines. Their report, accompanied by a geological map, was published in the Sixteenth Annual Report of the Geological Survey, Part 11, pages 1 - 207, and has for the last ten years served as a useful and accurate geological guide to mining operations. With the astonishingly rapid development of the Cripple Creek mines the opportunities for geological study multiplied, revealing great complexity of vein phenomena and stimulating a desire for fur ther investigation, particularly with a view of obtaining some evidence as to the persistence of the veins in depth. This desire found expres sion in a request by citizens of Colorado for a reexamination of the district by the United States Geological Survey and in an offer of cooperation, whereby the cost would be equally divided between the State of Colorado and the National Survey. The necessary amount having been subscribed in Cripple Creek, Colorado Springs, and Den ver, the State contribution was put in the hands of Mr. John Welling ton Finch, State geologist of Colorado, and by him disbursed. The cordial thanks of the geologists in charge of the work are due to Mr. Finch for his hearty and efficient cooperation. 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.
Author: Robert G. H. Raynolds Publisher: Geological Society of America ISBN: 0813700108 Category : Science Languages : en Pages : 318
Book Description
Prepared following the 2007 GSA Annual Meeting in Denver, Colorado, these 15 guides illustrate the latest geological and archeological thinking on a variety of current research themes.
Author: Ben Fogelberg Publisher: Big Earth Publishing ISBN: 9781565795198 Category : Sports & Recreation Languages : en Pages : 256
Book Description
What could be better than a walk through Colorado's mountains, woods, or valleys? How about a history hike? Hikers and historians Ben Fogelberg and Steve Grinstead take you there, and then take you beyond-sharing vignettes of days past to enhance these 50 walks to historic places in and around Rocky Mountain National Park, Fort Collins, Boulder, Denver, Colorado Springs, Pueblo, La Junta, and Trinidad. View gold and silver mines in their lofty mountain perches, visit old homesteads, walk to the site of a coal-mining tragedy, explore the burn zone of the Hayman Fire, descend a canyon to discover rock art and dinosaur tracks, even climb to remnants of a crashed B-17 bomber! From mile-long strolls to crossing the flanks of fourteeners, Walking Into Colorado's Past has fun and fascinating history hikes for all ages.
Author: Edwin B. Eckel Publisher: Createspace Independent Publishing Platform ISBN: 9781519732507 Category : Science Languages : en Pages : 484
Book Description
This is a summary of the known facts about the minerals that make up the rocks, soils, and ore deposits of Colorado. Compilation and abridgment of the literature from 1858, when gold was discovered, through 1957 (with a few additions for 1958 and 1959) is supplemented by information from unpublished sources. Designed to be of use to both professional and amateur mineralogists, the main part of the report describes the chief occurrences of 445 mineral species,42 of them first found in Colorado, together with many subspecies, varieties, and discredited "type" species. Directions for finding these localities are also given in the text. The bibliography contains more than 800 selected references to the most significant literature on the subject
Author: Waldemar Lindgren
Author: Waldemar Lindgren
Author: Robert G. H. Raynolds
Author: 
Author: Ben Fogelberg
Author: Edwin B. Eckel
Author: 
Author: 
Author: Henry C. Berg
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