Author: Jared Sparks

Publisher: Forgotten Books

Published: 2018-01-13

Total Pages: 54

ISBN-13: 9780483028104

Excerpt from The Treaty of Washington, 1842 In close connexion with this theory of inversion is that of the dolomitization of much of the limestone of Berkshire county. It has been found in other countries, that, when carbonate of lime is in contact with some unstratified rocks, or is in the vicinity of dislocated strata, it is impregnated with magnesia, or, in other words, it has been converted into Dolomite. The change is supposed to have taken place while the limestone was in a state'of fusion, or, at least, softened by heat, and permeable to the gaseous sublimation of carbonate of magnesia. After describing the Dolomite of Berkshire, and the evidences of its change from the orig inal limestone, our author observes Such are some of the marks of the powerful action of internal heat upon the rocks of Berkshire county. To the geologist 'and chemist they are as striking and convincing, alrnost, as the lava and smoke of Vesuvius are to tthe common observer. But, though this agency must have been powerful, when vast masses of limestone were melted and converted into Dolo mite, and huge masses of slate impregnated with carbon, yet the only agency now exerted by these almost smothered solfataras is, to raise a few degrees the temperature of two or three springs. 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.