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.