The Geology Of The Lake Superior Region Classic Reprint

Excerpt from The Geology of the Lake Superior Region Rates of royalty and value of ore in the ground. Origin of the ores of the Lake Superior pre-cambrian sedimentary iron-bearing formations Outline of discussion The iron ores are chiefly altered parts of sedimentary rocks Conditions of sedimentation.. Iron-bearing formations mainly chemical sediments Order of deposition of the iron-bearing sediments Are the iron-bearing formations terrestrial or subaqueous sediments? 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.