Excerpt from Reconnaissance of the Book Cliffs Coal Field, Between Grand River, Colorado and Sunnyside, Utah The Book Cliffs coal field is part Of the southern rim of the Uinta Basin, which is an immense structural trough in western Colorado and eastern Utah, around whose margin the outcrop of coal-bearing rocks can be traced for more than 500 miles. (see fig. From the vicinity of Mount Hilgard, in central Utah, northward to Castle gate, the coal measures form the eastern escarpment of the Wasatch. Plateau. Thence they trend Southeastward to Grand River, out cropping in the Book Cliffs. Beyond Grand River they continue eastward, forming the southern face of Grand Mesa, to the vicinity of Crested Butte. From this point the coal-bearing rocks trend northward and cross Grand River again near Newcastle. North of Grand River they form the Grand Hogback, and beyond the Dan forth Hills the trend is westward along the southern flank of the Uinta Mountains. This great basin of coal-bearing rocks has been but partially prospected, and mines are in Operation in only a few localities, but enough Of the area has been explored to prove that it is one of the most important coal reserves of the Rocky Mountain region. As a whole, this area is a distinct unit, but for convenience Of study and description, it is divided into several parts. The Book Cliffs field is that portion of the southern rim of the Uinta Basin which includes the Book Cliffs and lies between Grand River, Colo rado, and the Wasatch Plateau, Utah. 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.