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    1. The State Museum, State Library and State Archives are temporarily Closed.

      Geographic Information System (GIS)

      The datasets of the NYS Museum which are posted here are made freely available. Use of this data implies you understand the?disclaimer?associated with it. Our?Metadata?references are available from the?NYS GIS Clearinghouse.

      Boundary Data

      This Index Map shows ArcInfo coverages for the State of New York. Statewide coverages are "clipped" to the boundaries of these sheets to coincide with source maps.


      Surficial Geology Material Explanation

      For a complete explanation, see Map & Chart Series Number 40

      available from the NYS Museum Publications Department
      http://www.dongtianhuo.tw

      af - Artificial fill

      al - Recent alluvium
      Oxidized fine sand to gravel, permeable,
      generally confined to flood plains within a valley,
      in larger valleys may be overlain by silt,
      subject to flooding, thickness 1-10 meters,

      alf - Alluvial fan
      Poorly stratified silt, sand, and boulders,
      fan shaped accumulations,
      at bottoms of steep slopes,
      generally permeable, thickness 1-10 meters.

      alt - Alluvial terrace
      Fluvial sand and gravel,
      occasional laterally continuous lenses of silt,
      remnants of earlier higher flood plains,
      generally permeable, thickness 1-10 meters.

      b - Beach
      Sand and gravel deposit at marine shorelines,
      thickness variable.

      co, col - Colluvium
      Mixture of sediments,
      deposited by mass wasting,
      thickness generally 1 - 5 meters.

      cof - Colluvial fan
      Fan shaped accumulation,
      mixture of sediments,
      at mouths of gullies,
      thickness generally 1 - 5 meters.

      d - Dunes
      Fine to medium sands,
      well sorted, stratified,
      generally wind-reworked lake sediment,?
      permeable, well drained,
      thickness 1-10 meters.

      pm - Swamp deposits
      Peat-muck, organic silt and sand in poorly drained areas,
      unoxidized,
      commonly overlies marl and lake silt,
      potential land instability,?
      thickness 2-20 meters.?

      alp - Pleistocene alluvium

      lb - Lacustrine beach
      Generally well sorted sand and gravel,
      stratified, permeable and well drained,
      deposited at lake shoreline,
      generally non-calcareous,
      may have wave-winnowed lag gravel,
      thickness variable (1-5 meters).

      mb - Marine beach
      Generally well sorted sand and gravel,
      elevation at or below highest marine level,
      permeable and well drained,
      may be fossiliferous,
      deposited in brackish to salt water,
      thickness variable (1-5 meters).

      ld - Lacustrine delta
      Coarse to fine gravel and sand,
      stratified, generally well sorted,
      deposited at a lake shoreline,
      thickness variable (3-15 meters).

      md - Marine delta
      Coarse to fine gravel and sand,
      elevation at or below highest marine level,
      stratified, generally well sorted,
      deposited in brackish to salt water,
      permeable, thickness variable (3-15 meters).

      lsc - Lacustrine silt and clay
      Generally laminated silt and clay,
      deposited in proglacial lakes,
      generally calcareous, low permeability,?
      potential land instability,
      thickness variable (up to 50 meters).

      sc - Undifferentiated marine and lacustrine silt and clay?
      Elevation within highest marine level,
      generally laminated to massive silt and clay,
      may include fossil shells,
      deposited in brackish to salt water,
      low permeability, potential land instability,
      thickness variable (up to 50 meters).

      ls - Lacustrine sand
      Generally quartz sand, well sorted, stratified,
      usually deposited in proglacial lakes,
      but may have been deposited on remnant ice,
      generally a near-shore deposit or near a sand source,
      permeable, thickness variable (2-20 meters).

      s - Undifferentiated marine and lacustrine sand
      Well sorted, stratified, fine to medium sand,
      generally a near-shore deposit,
      at or below highest marine level,
      may include fossil shells,
      may be a brackish to salt water deposit,
      permeable, thickness variable (2-20 meters).

      d - Wind-deposited sand
      Fine to medium sand,
      well sorted, stratified,
      generally wind-reworked lake sediments,
      permeable, well drained,
      thickness variable (1-10 meters).

      og - Outwash sand and gravel
      Coarse to fine gravel with sand,
      proglacial fluvial deposition,
      well rounded and stratified,
      generally finer texture away from ice border,
      permeable, thickness variable (2-20 meters).

      fds - Fluvial deltaic sand
      Same as outwash sand and gravel,
      except deposition further from glaciers,
      age uncertain.

      fg - Fluvial sand and/or gravel
      Sand and/or gravel,?
      occasional laterally continuous lenses of silt,
      deposition farther from glacier than outwash, ?
      age and proximity to ice uncertain,
      permeable, thickness variable (1-20 meters).

      k - Kame deposits
      Coarse to fine gravel and/or sand,
      includes kames, eskers, kame terraces, kame deltas,
      ice contact, or ice cored deposition,
      lateral variability in sorting, texture
      and permeability,
      may be firmly cemented with calcareous cement,
      thickness variable (10-30 meters).

      ki - Inwash
      Coarse to fine gravel and/or sand,
      interpreted as alluvium
      deposited adjacent to active or remnant ice
      by streams of nonglacial origin,
      thickness variable (2-20 meters).

      usda - Undifferentiated stratified drift assemblage
      Dominantly clay, silt and sand,
      limited gravel and diamicton,
      stratification includes undisturbed and deformed laminations,
      ice-contact structures,?
      lenticular, discontinuous bodies of gravel and flow till,?
      may represent dead-ice, disintegration and local ice-contact lake deposits
      in ice-marginal and subglacial environments.,
      Thickness variable (10 - 30 meters).

      ali - Alluvial inwash
      Deposited between active or remnant glacier ice?
      and draped on adjacent valley wall,?
      lacks kettles, permeability varies,
      thickness variable (2-10 meters).

      sf - Subaqueous fan
      Coarse to fine gravel and/or sand,
      variable texture and sorting,
      deposited adjacent to glacier with?
      englacial or subglacial conduit debouching in deep water,
      thickness variable (5-30 meters).

      km - Kame moraine
      Variable texture (size and sorting) from boulders to sand,
      deposition at an active ice margin during retreat,
      constructional kame and kettle topography,
      locally, calcareous cement,
      thickness variable (10-30 meters).

      tm - Till moraine
      Variable texture (size and sorting),
      generally low permeability,
      deposition adjacent to ice,
      thickness variable (10-30 meters).

      ta - Ablation moraine
      Till, deposited by downwasting,?
      with minor amounts of sand and silt,
      deposition during final melting of glacier,
      thickness variable (1-10 meters).

      cd - Colluvial diamicton
      Mixture of sediments,
      unique to region beyond Wisconsinan glacial limit,
      rebedded saprolite and glacial debris,
      may be old (Illinoian) drift,
      homogenized by varying degrees of colluviation,
      bedrock may sporadically crop out or be within 1 - 3 meters of the surface.

      t - Till
      Variable texture (boulders to silt),
      usually poorly sorted sand-rich diamict,
      deposition beneath glacier ice,
      permeability varies with compaction,
      thickness variable (1-50 meters).

      Adirondack tills: ?generally sand-rich diamict,
      metamorphic provenance.
      Ontario-St. Lawrence-Champlain tills:
      generally silty clay to silt loam,
      sedimentary provenance.
      Tug Hill tills: ?generally stony silt-clay to sandy silt,
      ? ? ? ? ? ? ? ?differentiated from ?"ta" in this region,?
      sedimentary provenance. ?? ??? ??? ??? ? ? ??? ?

      r - Bedrock
      Exposed or generally within 1 meter of surface,
      in some areas saprolite is preserved.

      Surficial Geology Color Chart of the NYSGS

      The following symbols are used to plot the NYSGS Suficial maps, and are designed for use with a Calcomp electrostatic plotter.

      They have been used with an HP-Inkjet Plotter and Tektronix phaser.

      The symbol number will have to be modified depending on the plotter being used, as color is VERY HARDWARE SPECIFIC.

      The Symbolset comes from ArcInfo: Calcomp1.shd. ?The symbolset can be imported into ArcView.?
      In the future, we will have an ArcView legend available.

      SURFICIAL SYMBOL?

      alp ? ? ? 739 ? ?
      al ? ? ? ?739 ? ?
      co ? ? ? ?739 ? ?
      cof ? ? ? 739 ? ?
      alt ? ? ? 739 ? ?
      d ? ? ? ? ?17 ? ?
      mb ? ? ? ?473 ? ?
      lb ? ? ? ?473 ? ?
      ld ? ? ? ?473 ? ?
      md ? ? ? ?473 ? ?
      lsc ? ? ? ?37 ? ?
      sc ? ? ? ? 37 ? ?
      ls ? ? ? ?742 ? ?
      s ? ? ? ? 742 ? ?
      og ? ? ? ? 31 ? ?
      fg ? ? ? ? 31 ? ?
      ki ? ? ? ?123 ? ?
      ali ? ? ? 123 ? ?
      k ? ? ? ? 123 ? ?
      sf ? ? ? ?186 ? ?
      km ? ? ? ?186 ? ?
      tm ? ? ? ?417 ? ?
      ta ? ? ? ?417 ? ?
      udc ? ? ? 377 ? ?
      r ? ? ? ? 235 ? ?
      h2o ? ? ? 724 ? ?
      cd ? ? ? ?761 ? ?
      usd ? ? ? 123 ? ?
      af ? ? ? ? 41 ? ?
      bi ? ? ? ?739 ? ?
      b ? ? ? ? 739 ? ?
      to ? ? ? ?417 ? ?
      c ? ? ? ? 739 ? ?
      af ? ? ? ?739 ? ?
      t ? ? ? ? 377 ? ?
      du ? ? ? ?123 ? ?
      wt ? ? ? ?604 ? ?
      cs ? ? ? ?300 ? ?

      .787
      Alluvium: ?Recent floodplain deposits; most are sandy with silt, clay, or
      organic lenses as minor constituents. ?Low terraces that mimic?
      irregularities of stream gradient are mapped as alluvium.
      .787
      Fluvial Terrace: ?Stream terraces are mapped as fluvial terrace. ?Fluvial
      Terrace is mapped rather than outwash where there is no obvious source for
      outwash, or where fluvial deposits grade toward, rather than away from, a
      presumed glacier margin.
      .787
      Colluvium: ?Unsorted mixture of fine to coarse material. ?Colluvium is
      mapped only where deposits are obvious, otherwise it is designated till.
      Much of the diamict mapped as till may well be till-derived colluvium,
      particularly on the lower portion of steep valley walls.
      .976
      Paludal Sediment: ?Organic silt, sand, and organic accumulations
      deposited in swamps or marshes.
      .72
      Ice-Contact Stratified Drift: ?Coarse to fine sand and/or gravel.
      Inferred where constructional topography suggests collapse of subjacent
      ice, and by characteristic topography above outwash terraces. ?Numbers
      1-4 refer to morpho-sequences described below.
      .31
      Outwash: ?Coarse to fine gravel with sand; restricted to valley bottoms
      and stream terraces; numbers 1-4 refer to morpho-sequences described below.
      .725
      Lacustrine Sand: ?Sand deposited as deltas and beaches in large
      proglacial lakes; may be gradational with outwash. Numbers 1-4 refer to
      morpho-sequences described below.
      .37
      Lacustrine Clay: ?Lake clay; or laminated silt, silt and clay, or silty
      clay; deposited in proglacial lakes.
      .61
      Glacial Till: ?Mixture of clay, silt, sand to boulder sized material in
      varied proportions; unsorted to poorly sorted; deposited beneath glacial
      ice; till is generally more than 2 meters thick.?
      .417
      Glacial Till: ?As above, but generally 1-2 meters thick; overlies bedrock
      which may crop out sporadically.
      .109
      Superglacial Till: ?Similar to till described above, but less compact and
      commonly contains pockets and stringers of stratified drift or matrix
      deficient till; generally 1-2 meters thick.
      .2
      Bedrock: ?Exposed or generally within 1 meter of the surface.
      .724
      Water
      .739
      Recent alluvium: ?Oxidized fine sand to gravel, permeable, generally
      confined to floodplains within a valley, in larger valleys may be?
      overlain by silt, subject to flooding, thickness 1-10 meters.
      .37
      Undifferentiated marine and lacustrine silt and clay: ?Elevation within
      highest marine level, generally laminated to massive silt and clay, may
      include fossil shells, deposited in brackish to salt water, low?
      permeability, potential land instability, thickness variable
      (up to 50 meters).
      .17
      Dune sand: ?Fine to medium sands, well sorted, stratified, generally
      wind-reworked lake sediment, permeable, well drained, thickness?
      1-10 meters.
      .883
      Swamp Deposits: ?Peat, muck, organic silt, and sand deposits in poorly
      drained areas, thickness is variable (1-5 meters).
      .235
      Bedrock: ?Exposed or generally within 1 meter of surface, in some areas
      saprolite is preserved.
      .742
      Undifferentiated marine and lacustrine sand: ?Well-sorted, stratified,?
      fine to medium sand, generally a near-shore deposit, at or below highest
      marine level,may include fossil shells, may be a brackish to salt water?
      deposit, permeable, thickness variable (2-20 meters).
      .377
      Till: ?Till in a sheet showing little or no morainal topography, variable
      texture (boulders to silt), generally silty clay to silt loam, sedimentary
      provenance, usually poorly sorted sand-rich diamict, deposition beneath
      glacier ice, permeablility varies with compaction, thickness variable
      (1-50 meters).
      .604
      Winnowed till: ?Gravel left when waves of the lakes or Champlain Sea
      "winnowed" out the clay, silt and fine sand of the till to leave?
      coarse, poorly rounded gravel.


      Bedrock Geology Legend: Explanation of bedrock materials

      NYS Museum
      NYS Geological Survey
      Bedrock Attributes
      version 1.0 , 7-26-1999

      .14
      Q ? ? 1?? ?GLACIAL AND ALLUVIAL DEPOSITS?? ?
      .377
      ? ? ? 2?? ? COASTAL PLAIN DEPOSITS
      Km?? ?Monmouth Group, Matawan Group and Magothy Formation?? ?
      Kr?? ?Raritan Formation
      .382
      ? ? ? 3 MESOZOIC INTRUSIVES
      KJk?? ?Kimberlite and alnoite dike and diatreme
      KJd?? ?Lamprophyre, trachyte, ryolite, albite-basalt, and diabase dikes
      .433
      KJtp?? ?Trachyte porphyry
      .394
      ? ? ? 4?? ?NEWARK GROUP
      Trhc?? ?Hammer Creek Formation
      Trb?? ?Brunswick Formation
      Trs?? ?Stockton Formation
      Trl?? ?Ladentown Diabase
      Trp?? ?Palisade Diabase sill
      .999
      ? ? ? 5?? ?POTTSVILLE GROUP
      Pp?? ?Connoquenessing Formation
      .967
      ? ? ? 6 POCONO GROUP
      Mp?? ?Cuyahoga Formation
      .728
      ? ? ? 7 DEVONIAN INTRUSIVES
      Dpgr?? ?Muscovite-biotite granite
      Dpgd?? ?Muscovite-biotite granondiorite
      Dbg?? ?Muscovite-biotite granite gneiss
      .728
      ? ? ? 8?? ?CONEWANGO GROUP
      Dco?? ?Osway Formation
      .728
      ? ? ? 9 CONNEAUT GROUP
      Dct?? ?Ellicott Formation
      .728
      ? ? ?10?? ?CANADAWAY GROUP
      Dcys?? ?Northeast Shale
      Dcyl?? ?Westfield Shale
      Dcyd ?? ?Gowanda Shale
      Dcy?? ?Machias Formation
      .728
      ? ? ?11?? ?JAVA GROUP
      Dj?? ?Hanover Shale
      .728
      ? ? ?12?? ?WEST FALLS GROUP
      Dwf?? ?Angola Shale
      Dwn?? ?Nunda Formation
      Dwg?? ?West Hill Formation
      Dwr?? ?Lower Beers Hill
      Dwc?? ?Nunda Formation, West Hill Formation
      Dwrg?? ?Gardeau Formation
      Dwm?? ?Beers Hill Shale
      Dwnm?? ?"New Milford" Formation
      Dwh?? ?Honesdale Formation
      Dws?? ?Slide Mountain Formation
      Dww?? ?Upper Walton Formation
      .728
      ? ? ?13?? ?SONYEA GROUP
      Ds?? ?Cashaqua Shale
      Dsw?? ?Lower Walton Formation
      .728
      ? ? ?14 GENESEE GROUP AND TULLY LIMESTONE
      Dg?? ?West River Shale
      Dgo?? ?Oneonta Formation
      Dgu?? ?Unadilla Formation
      Dt?? ?Tully Limestone
      .739
      ? ? ?15?? ?HAMILTON GROUP
      Dhmo?? ?Moscow Formation
      Dhld?? ?Ludlowville Formation
      Dhsk?? ?Skaneateles Formation
      Dhpm?? ?Panther Mountain Formation
      Dhpl?? ?Plattekill Formation
      Dhmr?? ?Marcellus Formation
      Dhm?? ?Undifferentiated Lower Hamilton Group
      Dh?? ?Undifferentiated Hamilton Group
      .739
      ? ? 16?? ?ONONDAGA LIMESTONE AND TRISTATES GROUP
      Dob?? ?Onondaga Limestone
      Don?? ?Onondaga Limestone
      Dou?? ?Onondaga Limestone
      Do?? ?Oriskany Sandstone
      Dgl?? ?Glenerie Formation
      .744
      ? ? ?17?? ?HELDERBERG GROUP
      Dhg?? ?Port Ewen Formation
      .744
      ? ? ?18?? ?UNDIFFERENTIATED LOWER DEVONIAN AND SILURIAN ROCKS
      DS?? ?Port Ewen thru Manlius Limestone, Rondout Dolostone
      .755
      ? ? ?19 AKRON DOLOSTONE & COBLESKILL LIMESTONE & AND SALINA GROUP
      Sab?? ?Akron Dolostone
      Scv?? ?Camillus Shale
      Scy?? ?Syracuse Formation
      Scc?? ?Cobleskill Limestone
      Ssy?? ?Syracuse Formation
      Scs?? ?Cobleskill Limestone
      Sv?? ?Vernon Formation
      .755
      ? ? ?20?? ?UNDIFFERENTIATED SILURIAN ROCKS I
      Srp?? ?Rondout Formation
      .755
      ? ? ?21?? ?UNDIFFERENTIATED SILURIAN ROCKS II
      Sbs?? ?Bloomsburg Formation
      .755
      ? ? ?22?? ?LOCKPORT GROUP
      Sl?? ?Guelph Dolostone
      .755
      ? ? ?23?? ?CLINTON GROUP
      Scl?? ?Rochester Shale
      Sr?? ?Decew Dolostone
      Sik?? ?Irondequoit Limestone
      .817
      ? ? ?24?? ?MEDINA GROUP AND QUEENSTON FORMATION
      Sm?? ?Thorold Sandstone
      SmOq ? ?Grimsby Formation
      Oq ? ? ?Queenston Formation
      .113?? ?
      ? ? ?25 CORTLANDT AND SMALLER MAFIC COMPLEXES
      Oban?? ?Biotite augite norite
      Od?? ?Diorite with hornblende and/or biotite
      Ohn?? ?Hornblende norite
      Oh?? ?Hornblendite
      Oopx?? ?Olivine pyroxenite
      Opx?? ?Pyroxenite
      Ogb?? ?Gabbro or norite to hornblende diorite
      .64
      ? ? ?26?? ?LORRAINE & TRENTON & ?BLACK RIVER GROUPS AND METAMORPHIC EQUIVALENTS
      Oo?? ?Oswego Sandstone
      Oqu?? ?Quassaic Quartzite
      Opw?? ?Pulaski Formation
      Of?? ?Frankfort Formation
      Osc?? ?Schenectady Formation
      Oag?? ?Austin Glen Formation
      Ou?? ?Utica Shale
      Oc?? ?Canajoharie Shale
      On?? ?Normanskill Shale
      Owl?? ?Walloomsac Formation
      Om?? ?Manhattan Formation
      Oi?? ?Iberville Shale
      Osp?? ?Stony Point Shale
      Ocum?? ?Cumberland Head Argillite
      Ot?? ?Trenton Group
      Obr?? ?Black River Group ?
      Otbr?? ?Dolgeville Formation
      Oba?? ?Balmville Limestone
      Otm?? ?Taconic Melange
      OCs?? ?Taconic Melange
      .64
      ? ? ?27?? ?CHAZY GROUP
      Och?? ?Valcour Limestone
      .75 ?28?? ?LOWER ORDOVICIAN INTRUSIVE
      Os?? ?Serpentinite
      .75
      ? ? ?29?? ?BEEKMANTOWN & WAPPINGER & STOCKBRIDGE GROUPS & POTSDAM?
      ?? ?SANDSTONE & POUGHQUAG QUARTZITE & VERMONT VALLEY SEQUENCE?
      ?? ?AND METAMORPHIC EQUIVALENTS
      Obk?? ?Beekmantown Group
      Ow?? ?Upper Wappinger Group
      OCth?? ?Theresa Formation
      OCst?? ?Stockbridge Marble
      OCw?? ?Wappinger Group
      OCi?? ?Inwood Marble
      OCs?? ?Cambrian thru Middle Ordovician carbonate rock
      .100
      Cbk?? ?Beekmantown Group
      Cth?? ?Theresa (Galway) Formation
      Cw?? ?Lower Wappinger Group
      Cp?? ?Potsdam Sandstone
      Cs?? ?Stissing Formation
      Cwmd?? ?Winooski, Monkton and Dunham Dolostone
      Cc?? ?Cheshire Quartzite
      Ccd?? ?Cheshire Quartzite and Dalton Formation
      Cpg?? ?Poughquag Quartzite
      .139
      ? ? ?30?? ?TACONIC OVERTHRUST (ALLOCHTHONOUS) SEQUENCE
      Ob?? ?Bedford Gneiss
      Ohr?? ?Harrison Gneiss
      Oht?? ?Hartland Formation
      Oag?? ?Austin Glen Formation
      Omi?? ?Mount Merino Formation
      Opl?? ?Pillow lava at Stark's Knob near Schuylerville, Saratoga County
      Op?? ?Poultney Formation ("B" and "C" Members)
      Osf?? ?Stuyvesant Falls Formation
      OCu?? ?Undivided Ordovician and Cambrian pelite, quartzite and conglomerate
      OCe?? ?Elizaville Formation
      .131
      Cpw?? ?Poultney Formation ("A" Member)
      Cg?? ?Germantown Formation
      Cm?? ?Mettawee Formation
      Cn?? ?Nassau Formation
      Ca?? ?Austerlitz Phyllite
      Cgt ? ? Greenstones and tuffs and/or basalt
      Cr?? ?Rensselaer Graywacke
      Cev?? ?Everett Schist
      .7
      ? ? ?31?? ?METAMORPHIC ROCKS OF SEDIMENTARY AND VOLCANIC ORIGIN
      f?? ?Fordham Gneiss ?
      y?? ?Yonkers Gneiss
      pg?? ?Poundridge Gneiss
      .289
      ? ? ?32?? ?INTRUSIVE PEGMATITE DIKES
      p?? ?Granite pegmatite dikes, unmetamorphosed
      .155
      ? ? ?33?? ?METAMORPHIC ROCKS OF IGNEOUS ORIGIN
      gb?? ?Olivine metagabbro
      .69
      a ? ? ? metanorthosite and anorthositic gneiss
      ao?? ?Gabbroic metanorthosite and anorthositic gneiss?
      .171
      ? ? 34 ?? ?METAMORPHIC ROCKS OF SEDIMENTARY ORIGIN (PROBABLY INCLUDES?
      ?? ?SOME METAVOLCANICS)
      ?? ?ADIRONDACKS
      cs?? ?Calcsilicate rock, dolomitic and calcitic marble
      mb?? ?Calcitic and dolomitic marble, variably siliceous
      mu?? ?Undivided metasedimentary rock and related migmatite
      .790
      bqp?? ?Biotite-quartz-plagioclase paragneiss, amphibolite, and related migmatite
      bqpq?? ?Biotite-quartz-plagioclase paragneiss, commonly leucocratic
      garb?? ?Quartz-feldspar paragneiss with variable amounts of garnet and sillimanite
      qt?? ?Quartzite, quartz-biotite schist and graphitic schist
      .171
      ? ? ?35 SOUTHEASTERN NEW YORK
      cs?? ?Calcsilicate rock, dolomitic and calcitic marble
      mb?? ?Calcitic and dolomitic marble, variably siliceous
      .412
      bqpc?? ?Biotite-quartz-plagioclase paragneiss
      qtcs?? ?Garnet-biotite-quartz-feldspar gneiss
      qtlg?? ?Garnet-bearing paragneiss and interlayered quartzite
      rg?? ?Rusty and gray biotite-quartz-feldspar paragneiss
      sc?? ?Sillimanite-cordierite-almandine-biotite-quartz-feldspar gneiss
      .845
      ? ? ?36?? ?METAMORPHIC ROCKS OF UNCERTAIN ORIGIN
      ?? ?ADIRONDACKS
      qpg?? ?Pyroxene-hornblende-quartz-plagioclase gneiss
      ffg?? ?Ferrohedenbergite-fayalite granite and granite gneiss
      hqs?? ?Hornblende-quartz syenite gneiss
      hs?? ?Hornblende syenite gneiss
      phgs?? ?Charnockite, granitic and quartz syenite gneiss
      phqs?? ?Charnockite, mangerite, pyroxene-quartz syenite gneiss
      ps?? ?Mangerite, pyroxene-(hornblende) syenite gneiss
      .20
      am?? ?Amphibolite, pyroxenic amphibolite
      lg?? ?Leucogranitic gneiss
      bg?? ?Biotite granite gneiss
      phg?? ?Leucogranite and granite gneiss
      hbg?? ?Biotite and or hornblende granite gneiss
      hbgo?? ?Megacrystic Biotite and or hornblende granite gneiss?
      .845
      ? ? ?37 METAMORPHIC ROCKS OF UNCERTAIN ORIGIN SOUTHEASTERN NEW YORK?
      qpg?? ?Pyroxene-hornblende-quartz-plagioclase gneiss
      .20
      am?? ?Amphibolite, pyroxenic amphibolite
      lg?? ?Leucogranitic gneiss
      bg?? ?Biotite granite gneiss
      bhg?? ?Biotite-hornblende granite and granite gneiss
      hg ? ? ?Hornblende granite and granite gneiss
      .808
      ? ? ?38 UNDIVIDED AND MIXED GNEISSES
      ? ? ? ? ADIRONDACKS
      amg?? ?Interlayered amphibolite and granitic, charnockitic, syenitic gneiss
      mug?? ?Interlayered metasedimentary rock and granitic gneiss
      ach?? ?Hybrid rock: ?mangeritic to charnockitic gneiss
      ack?? ?Interlayered gabbroic or noritic metanorthosite
      amu?? ?Hybrid rock: ?metanorthosite and sedimentary rock
      .808
      ? ? ?39 UNDIVIDED AND MIXED GNEISSES ?SOUTHEASTERN NEW YORK
      amg?? ?Interlayered amphibolite and granitic, charnockitic, syenitic gneiss
      mug?? ?Interlayered metasedimentary rock and granitic gneiss
      .724
      h20 ? 40 wate


      Physiographic Maps

      Brittle Structures of New York (nyfaults)

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      While every effort has been made to insure the integrity of this digital data, the New York State Education Department ("NYSED") makes no representation or warranty, expressed or implied, with respect to its accuracy, completeness, or usefulness for any particular purpose or scale. NYSED assumes no liability for damages resulting from the use of any information, apparatus, method or process disclosed in this dataset, map or text, and urges independent site-specific verification of the information contained herein. Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by NYSED.

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