Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > New York
|Name||Manhattan Formation, undivided|
|Original map label||Om|
|Comments||part of Trenton Group and Metamorphic Equivalents up to 8000 ft. (2400 m). All units (?Omb - ?Omd) are mapped under Om in digital map. Only unit Oma is separated out, so I separated it out of this description. Unit is also mentioned under Eugeosynclinal (Allochthonous) Sequence; uses same symbol and color. Age change and second unit description from USGS Lexicon website (ref. NY046) and reference NY004: Manhattan Schist member A replaced by Walloomsac Formation (not new) based on work by Jackson and Hall (1982), Hall (in press), and A.A. Drake (1990, pers. commun.). In addition, L.M. Hall (1985?, pers. commun.) determined that member B of the Manhattan Schist is part of member C and thus recommended the abandonment of member B (Baskerville, 1992) .|
|Primary rock type||pelitic schist|
|Secondary rock type||gneiss|
|Other rock types||amphibolite|
NYS Museum, NYS Geological Survey, NYS Museum Technology Center, 1999, 1:250,000 Bedrock geology of NYS, data is distributed in ARC/INFOr EXPORT format (with ".e00" extension) in 5 seperate files based on printed map sheets, http://www.nysm.nysed.gov/gis.html.
D. W. Fisher; Y. W. Isachsen, L. V. Rickard, 1970, Geologic Map of New York State, consisting of 5 sheets: Niagara, Finger Lakes, Hudson-Mohawk, Adirondack, and Lower Hudson, New York State Museum and Science Service, Map and Chart Series No. 15, scale 1:250000.
|Geographic coverage||Bronx - Dutchess - New York - Putnam - Westchester|
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