Identifier: scienceguide4660amer (find matches)
Title: Guide leaflet
Year: 1901 (1900s)
Authors: American Museum of Natural History
Subjects: American Museum of Natural History Natural history
Publisher: New York : The Museum
Contributing Library: American Museum of Natural History Library
Digitizing Sponsor: IMLS / LSTA / METRO

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The rocking stone, New York Zoological Park, an ice-transported bowlder resting ona glaciated surface. Birmingham, Alabama, to Lake Champlain. It is one of the prominentsubdivisions of the Newer Appalachian physiographic province. 6. The narrow Kittatinny Mountain ridge dipping westward,represents the northeastern extension of the belt of newer and foldedAppalachians of central Pennsylvania. 7. The Alleghany Plateau appears west of the Delaware River.Farther north in New York State the Catskill Mountains represent asubdivision of this plateau. RELIEF MODIFIED BY GLACIATION The northern portion of the New York City district has beentraversed at least four times by great sheets of ice which moved downfrom the Labrador center. These continental glaciers modified thedrainage and the surface of the land over which they passed. The terminalmoraine which represents the southernmost extent of the last ice field
Text Appearing After Image:
Exposure of glacial till, containing Band, gravel, and bowlders, in oontad with Serpentine rock, at Castle Point, Hoboken. After United States Geological Survey, Passaic Folio, No. 157 GEOLOGY OF NEW YORK CITY AND VICINITY 7 appears as a conspicuous ridge consisting of knobs and kettle holes onLong Island, Staten Island, and New Jersey. It continues westwardacross the United States to the Pacific Ocean near Seattle, Washington. The drift bowlders and unsorted rock debris in the terminal moraineand northward give a clue as to the direction of ice movement. Largebowlders of crystalline rock from Jamaica and Hollis, Long Island,indicate that they were plucked out of the bed rock in the vicinity ofYonkers, Mt. Vernon, and other places in Westchester County, NewYork. Glacial-borne pebbles containing fossils and oolites have beenfound at Broadway and 191st Street. The fossils represent minutefragments of bryozoa and corals, of Devonian age, which are similar tothose found at present in the

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