Publisher's Synopsis
Excerpt from Reports of Geological Explorations During 1871-72: With Maps and Sections
The next rocks in age, porphyry conglomerate, have also resisted very well the erosive action, but the brown coal beds lying upon them would have been greatly destroyed, had not in the first place a thick bed of Shell sandstone or limestone, often consisting almost entirely of shells, formed a protective cover over them. This limestone generally forms a ridge running in the direction of the strike of the beds.
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.
