Mineral Resources On-Line Spatial Data
Mineral Resources > Online Spatial Data > Geology > by state > New York
|Geologic age||Middle - Upper Devonian|
|Original map label||Dgo|
|Comments||part of Genesee Group 1200-1500 ft. (370-460 m), Secondary unit description from USGS Lexicon website (ref. NY046) and reference NY021: The Oneonta Formation occurs at the top of core PT-1 and the lower parts are exposed along Rte 30 near Grand Gorge. Unit is composed of red, green, and gray mudstones with subordinate red to gray, very fine- to fine-gained sandstones. Mudstones range from fissile and relatively nonbioturbated to blocky and intensely bioturbated with desiccation cracks throughout representing flood-basin deposits. Sandstone sets are sharp-based, cm- to dm-thick sheets and lenses, cross-bedded or planar bedded flood deposits. The major sandstone bodies are interpreted as fluvial channel deposits. Gradationally overlies Gilboa Formation in the Schoharie Valley. Overlies Manorkill Formation to the east. Age is Middle and Late Devonian (Bridge and Willis, 1994).|
|Primary rock type||shale|
|Secondary rock type||sandstone|
|Other rock types||conglomerate|
Sedimentary > Clastic > Mudstone > Shale
Sedimentary > Clastic > Sandstone
Sedimentary > Clastic > Conglomerate
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||Chenango - Delaware - Otsego - Schoharie - Ulster|
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