Isbn: 9780282995959 - the american journal of science and arts, vol. 22: november, 1856 (classic reprint) (3 resultados)

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condición: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condición: New. Print on Demand. This book examines the geological position and the occurrence of ores of iron. The ores of iron are associated with rocks of the Azoic System. The Azoic System, defined by Murchison and de Verneuil, is a series of rocks which characterize the presence of iron ore deposits. The author calls attention to the magnitude of these deposits, as being beyond anything which occurs in any of the succeeding geological groups or systems of rocks. The author illustrates these views through descriptions of the great ferriferous districts of the world, including Lake Superior, Scandinavia, Missouri, and Northern New York. Analogies between the positions and occurrences of the ores in these regions are highlighted and the significance of the insights on this subject are conveyed. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.…