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Excerpt from The Geology of Rutland and the Parts of Lincoln, Leicester, Northampton, Huntingdon, and Cambridge: Included in Sheet 64 of the One-Inch Map of the Geological Survey, With an Introductory Essay on the Classification and Correlation of the Jurassic Rocks of the Midland District of England
IN obedience to a very general demand for the more rapid completion of the maps illustrating the coal-producing districts of the country, the officers of the Geological Survey of Great Britain, who were employed in tracing northwards the boundaries of the Jurassic Strata, were nearly twenty years ago transferred to the northern counties.
Thus the mapping of the Lias and Oolites remained during a considerable interval in abeyance. This period was, however, marked by many important advances made by geologists in their knowledge of the rocks in question, and by the introduction of new principles and methods of classification. The views gradually elaborated by Quenstedt, Fraas, Marcou, Oppel, and others on the continent, were applied by Dr. Wright and other geologists to the rocks of this country, and the necessity for modifications of the classification, adopted in some of the former publications of the Survey, were thereby rendered manifest. In particular, we may mention the conviction arrived at by many geologists, that certain rocks supposed to be of Great Oolite age, ought in fact to be classed with the Inferior Oolite.
Having been engaged during six or seven years in preparing a geological map and description of that interesting county so little known to geologists Lincolnshire, I had been gradually led to the adoption of the views referred to above; and in 1867, when it was determined to resume the mapping of the Jurassic rocks, I was requested to join for a time the staff of the Geological Survey, and to devote my attention to the country intermediate between Lincolnshire and the districts already mapped. It soon became clear to me that not only would the doubtful beds have to be classed with the Inferior Oolite, but, that, in consequence of the very local character of many of the formations in the district, a new classification and nomenclature was rendered absolutely necessary in order to adequately represent them.
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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.
Reseña del editor:
Excerpt from The Geology of Rutland and the Parts of Lincoln, Leicester, Northampton, Huntingdon, and Cambridge: Included in Sheet 64 of the One-Inch Map of the Geological Survey, With an Introductory Essay on the Classification and Correlation of the Jurassic Rocks of the Midland District of England
While the mapping of the district was in progress, the geology of which forms the subject of this Memoir, I had several opportunities of verifying the accuracy and skill with which Mr, Judd traced the geological boundary, lines, and the truly scientific manner in which he formed those deductions, the result of which has been expressed in a new classification of some of the formations comprised in the area. I may add that the circumstances which led to the resignation by Mr. Judd of his post on the Geological Survey have always been matter of deep regret to me, for it is not often that men are to be found who possess that rare combination of knowledge on so many special branches of geological inquiry which characterises the author of this memoir. I also feel that we are deeply indebted to Mr. Judd for having so frankly consented,-after he had left the Survey, to make his work complete by the gratuitous preparation of a memoir which he was in nowise bound to write. That this important work has been thoroughly well done all geologists will allow.
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.
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