Peneplains Of The Front Range And Rocky Mountain National Park Colorado Classic Reprint

Excerpt from Peneplains of the Front Range and Rocky Mountain National Park, Colorado The purpose of this paper is to call attention to some of the major surface features in the Rocky Mountain National Park and to point out their probable correlation with similar features in neighboring regions. The observations on which the paper is based were made in the summer of 1916, during an investigation in which other work demanded first consideration. This paper may therefore be considered a by-product. For the same reason many of the observations were not followed to conclusions, yet the data obtained seem to be sufficient to establish a certain order of events, the recognition of which may be of assistance in working out in detail the geologic and geographic history of the Rocky Mountain region. Two Cycles Of Erosion Previously Recognized. In an account of the general geology of the Georgetown quadrangle, Colo., Ball describes three distinct types of land forms - "an old, mature mountainous upland; younger V-shaped valleys incised in this upland; and glacial cirques developed at the heads of some of the streams, passing downward into U-shaped valleys." Ball describes the mountainous upland as consisting of highlands of rounded or gently sloping tops which are remnants of an ancient peneplain or old surface of erosion. Most of these remnants in the Georgetown quadrangle lie above an altitude of 11,500 feet. On this old peneplain there were many monadnocks, some of which are now recognizable as the summits of the highest mountains. Similar surfaces of erosion occur elsewhere in the mountains, among them the well-known upland plain near Pikes Peak, recognized by Cross. 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.