The geology of the Breckenridge, Colorado District
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Text from page 1: "The work used as a basis for this report was done during a part of the Summer of I9I5 in connection with a geologic investigation carried on by a party from the University of Missouri, in charge of Prof. W. A. Tarr. The work included the mapping of the areal geology of the southern half of the Breckenridge, Colorado, mining district and a study of the structural geology of the region. The different igneous intrusions were studied, both as to the character of their rocks and their relation to and effect on the other rocks of the area. A good deal of time was devoted to the study of the economic geology and to the physiography of the district, with special emphasis on the processes and principles involved in each case. The glacial deposits and the part the ice played in developing the physiography of the region were studied to a considerable extent."
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