File:Annals of the New York Academy of Sciences (1918) (18414021725).jpg

Title: Annals of the New York Academy of Sciences
Identifier: annalsofnewyo28191820newy (find matches)
Year: 1877 (1870s)
Authors: New York Academy of Sciences
Subjects: Science
Publisher: New York, New York Academy of Sciences
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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LOBECK, NEW YORE CITY, A PHYSIOGRAPHIC CENTER 1? by the mature dissection of the Catskill Mountains and of the western Pennsylvania Plateau region where extreme ruggedness prevails. The economic dependency of people upon the features of a dissected coastal plain, the contrast between the different belts, the routes of travel, the position of towns, the controlling influence of the fall line, the loca- tion of towns, railroads, and roads upon the surface of a youthful plain, but in the valleys of a maturely dissected one, the occurrence of the ex- tensive bituminous coal beds in the Allegheny Plateau region, the advan- tageous methods of mining there compared with those in the folded
Text Appearing After Image:
ALLEGHENY Fig. 13.—The cuestas and lowlands of western New York anthracite region, these are only some of the topics that may be taken up here with profit. Block Mountains.—The subject of block mountains offers opportunity to mention some isolated examples like Snake Mountain in Vermont near Lake Champlain and others in that general region. A related topic is fault-line scarps illustrated by the really excellent example bounding the New Jersey Highlands on the east and extending northward into New York State, and again the abrupt margins of the Connecticut Lowland separating it from the upland on either side (Fig. 1.8). Downfaulted grabens or more truly basins resulting from the erosion of downdropped less resistant rocks are represented by the Boston and Narragansett Basins, the long Connecticut River lowland, and the Pomperaug or Southbury Valley in western Connecticut. Rectangular drainage systems

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