Author: A. J. Jukes-Browne

Publisher: Forgotten Books

Published: 2015-06-26

Total Pages: 194

ISBN-13: 9781330465820

Excerpt from The Geology of the South-West Part of Lincolnshire, With Parts of Leicestershire and Nottinghamshire: Explanation of Sheet 70 The area represented on Sheet 70 of the Geological Survey of England contains a considerable portion of the Jurassic escarpments of Lincolnshire and is not unfamiliar to general readers, inasmuch as the line of the Great Northern Railway runs through it for nearly 30 miles, passing by Grantham and Newark. The rocks embraced in it range from the Keuper Marls up to the Kimeridge Clay. Among these the Lincolnshire Limestone attains its greatest thickness and covers a considerable breadth of ground, while the Marlstone also is locally well developed but presents a remarkable inconstancy of thickness. As the area is a continuation of that described in the Geological Survey Memoir on the "Geology of Rutland" (Sheet 64) by Professor Judd, wherein the characters and classification of the Jurassic Strata of the Midland districts, and their correlation with those to the south-west and north, were fully discussed, the reader is referred to that Memoir for general questions which it has not been deemed necessary to re-open here. The present Explanation is confined to a description of the rocks that occur within the limits of the Map. The Glacial and Post-glacial deposits, which play so important a part in the geology of the area, are represented on a separate edition of the Map. As they were only briefly discussed in the Rutland Memoir, and as they here present features of special interest, they are described in some detail in the following pages, references being also made to their extension into neighbouring, districts. Some features of economic importance are likewise enumerated. One of the most noticeable of these is the occurrence of no fewer than four distinct platforms of ironstone, two in the Lias, one in the Inferior Oolite, and one in the Great Oolite. 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.