Preliminary integrated geologic map databases for the United States: Digital data for the geology of Wrangell- Saint Elias National Park and Preserve, southcentral Alaska

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Frequently-anticipated questions:

What does this data set describe?
    Title:
    Preliminary integrated geologic map databases for the United States: Digital data for the geology of Wrangell- Saint Elias National Park and Preserve, southcentral Alaska
    Abstract:
    This dataset is the first digital compilation of geologic mapping of the Wrangell-St. Elias National Park and Preserve. It was compiled from many published and unpublished sources which were interpreted and correlated to create a consistent geologic map.

    This dataset is also a portion of a statewide geology database, which is being compiled by the U.S. Geological Survey's National Surveys and Analysis project (NSA), whose goal is to compile geologic, geochemical, geophysical, and other data.

    Supplemental_Information:
    Digital representation of geologic mapping facilitates the presentation and analysis of earth-science data. Digital maps may be displayed at any scale or projection, however the geologic data in this entire data set is presented for use at a nominal scale of 1:350,000. Individual data sets may contain data for use at larger scales.

  1. How should this data set be cited?

    Wilson, Frederic H. , Labay, Keith A. , Shew, Nora B. , Preller, Cindi C. , and Mohadjer, Solmaz, 2005, Preliminary integrated geologic map databases for the United States: Digital data for the geology of Wrangell- Saint Elias National Park and Preserve, southcentral Alaska: United States Geological Survey OFR 2005-1342.

    Online Links:

    • xxxx

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -147.0
    East_Bounding_Coordinate: -138.0
    North_Bounding_Coordinate: 63.0
    South_Bounding_Coordinate: 59.0

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 2005
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set.

    2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 6
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -147.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 0.0
      False_Northing: 0.0

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.001753
      Ordinates (y-coordinates) are specified to the nearest 0.001753
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.4.
      The flattening of the ellipsoid used is 1/294.9787.

  7. How does the data set describe geographic features?

    polygons
    Characteristics of the polygon features in the geology coverages are coded in the polygon attribute table. The table <cov>.pat includes the following items: CLASS, NSACLASS, NSAMOD, QCLASS, SOURCE, LABEL, MIN_AGE, and MAX_AGE (Source: This data set)

    NSACLASS
    NSACLASS is a positive integer value (4 5 B) item in the polygon attribute table. Values range discontinuously from 98 to 7400. NSACLASS is a numeric code for the geologic unit. This data set represents a generalized map, thus it is possible that a geologic unit is made of multiple NSACLASS values. This specific map area includes more detailed Quaternary mapping, requiring some of the NSACLASS values to be subdivided. These geologic units are attributed in the .pat item QCLASS. Each NSACLASS or QCLASS matches with geologic unit labels in LABEL and has a minimum (MIN_AGE) and maximum age (MAX_AGE) range, given in million of years (my). Supplemental attribute tables included with this data set, contain addtional descriptive information of each geologic unit. A user may use items SOURCE and CLASS to retrieve information about the original units from which these generalize units were formed. Also, see the USGS publication, SIM 2877, for full descriptions of the geologic units within the Wrangell-Saint Elias National Park and Preserve area. For explanation of SOURCE, see metadata section 2.5 Lineage. NOTE: Because of the limitations of common GIS fonts, the letters "Mz", "Pz", "Tr", and "Pa" are substituted for the standard symbols for "Mesozoic", "Paleozoic", "Triassic", and "Pennsylvanian." (Source: this data set)

    ValueDefinition
    98Area not mapped
    100Surficial deposits, undifferentiated; also QCLASS 1000; age 0-1.6 my

    101Ice
    102Water
    105Qa - Alluvium (Holocene); also QCLASS 1050; age 0-1.6 my
    107subdivided unit; QCLASS 1070 (Qu), 1071 (Qu), or 1072 (Qcb); age 0-1.6 my
    108Ql - Landslide deposits (Holocene and Pleistocene); also QCLASS 1080; age 0-1.6 my
    109Qao - Older alluvium (Holocene and Pleistocene); also QCLASS 1090; age 0-1.6 my
    112Qfl - Fine-grained deposits (Holocene); also QCLASS 1120; age 0-1.6 my
    115Qb - Beach and delta deposits (Holocene); also QCLASS 1150; age 0-0.1 my
    116Qfl - Fine-grained deposits (Holocene); also QCLASS 1160; age 0-0.1 my
    118Qms - Mineral spring deposits (Holocene); also QCLASS 1180; age 0-0.01 my
    120Qe - Eolian deposits (Holocene); also QCLASS 1200; age 0-1.6 my
    124Qcr - Copper River deposits (Pleistocene); also QCLASS 1240; age 0-1.6 my
    126Rock debris on glacier ice; also QCLASS 1260; age 0-0.01 my
    127Qrg - Rock glacier deposits (Holocene); also QCLASS 1270; age 0-0.01 my
    130Qag - subdivided unit; QClASS 1300 (Qag) or 1301 (Qag); age 0-0.01 my
    135Qg - Drift of older glaciations (Pleistocene); also QCLASS 1350; age 0.01-1.6 my
    138Qg - Older Wisconsin glaciation deposits (Pleistocene); also QCLASS 1380; age 0.01-1.6 my
    190Qg - Glacial deposits (Pleistocene); also QCLASS 1900; age 0.06-1.6 my
    220Qg - Glacial deposits (Tertiary); also QCLASS 2200; age 1.60-5.3 my
    301subdivided unit; QCLASS 3011 (Qwws), 3012 (Qwwv), 3013 (Qwd), 3014 (Qws), or 3015 (Qwc); age 0-1.6 my
    310Qws - Mount Sanford volcano; dacite pyroclastic flow (Holocene, Pleistocene); also QCLASS 3100; age 0-1.6 my
    312Qvd - Volcaniclastic deposits, volcanic debris flows (Pleistocene); also QCLASS 3120; age 0-1.6 my
    314Qpf - Volcaniclastic deposits, pyroclastic flows (Pleistocene); also QCLASS 3140; age 0-0.01 my
    316Qws - Mt. Sanford volcano; lava flows (Pleistocene); also QCLASS 3160; age 0.01-1.6 my
    320Qbc - Volcaniclastic deposits; cinder cones, flows, and tuffs (Pleistocene); also QCLASS 3200; age 0-1.6 my
    355Qwj - Mt Jarvis volcanoes; shield and intracaldera lavas (Pleistocene); also QCLASS 3551; age 0.01-1.6 my
    401subdivided unit; QCLASS (4011) Qwdr, 4012 (Qwsr), or 4013 (Qwjd); age 0-1.6 my
    402Qwcr - Capital Mountain volcano; central andesite plug, rhyolite laccolith and dike (Pleistocene); also QCLASS 4020; age 0-1.6 my
    403Qwcr - Capital volcano; radial dike swarm and plugs (Pleistocene); also QCLASS 4030; age 0.01-1.6 my
    451QTwt - Tanada Peak volcano; shield and intracaldera lavas (Pleistocene and Pliocene); also QCLASS 4510; age 0.01-23.7 my
    452QTwi -Flows of the Ice Fields Plateau, older volcanic and sedimentary rocks; (Pleistocene, Pliocene, or Miocene); also QCLASS 4520; age 0.01-23.7 my

    455QTw - Older volcanic and sedimentary rocks; lava flows and sedimentary rocks (Pleistocene, Pliocene, or Miocene); also QCLASS 4550; age 0.01-23.7 my
    465QTwr - Older volcanic and sedimentary rocks; domes and intrusive rocks (Pleistocene, Pliocene, or Miocene); also QCLASS 4650; age 0.01-23.7 my
    500Tsu - Sedimentary rocks (Pliocene, Paleocene); age 1.6-66.4 my
    565QTy - Yakataga Formation (Holocene(?), Pleistocene, Pliocene, and Miocene); age 0.01-23.7 my
    675Tps - Poul Creek Formation (early Miocene(?), Oligocene, and late Eocene(?)); age 5.3-36.6 my
    680Tps - Poul Creek Formation (early Miocene(?), Oligocene, and late Eocene(?)); age 5.3-57.8 my
    810Tt - Tokun Formation (Eocene); age 36.6-57.8 my
    820Tk - Kulthieth Formation (Eocene and late Paleocene(?)); age 36.6-57.8 my
    860Tk - Kulthieth Formation (Eocene and late Paleocene(?)); age 40-63.6 my
    875Tos - Orca Group; turbidites (early Eocene and late Paleocene); age 36.6-57.8 my
    950Tos - Orca Group; turbidites (early Eocene and late Paleocene); age 36.6-66.4 my
    951Tos - Orca Group; turbidites (early Eocene and late Paleocene); age 36.6-66.4 my
    952Tos - Orca Group; turbidites (early Eocene and late Paleocene); age 36.6-66.4 my
    1000Tvu - volcanic rocks, undivided (Tertiary); age 1.6-66.4 my
    1011Thf - Hypabyssal felsic and intermediate intrusions (Tertiary); age 1.6-66.4 my
    1040Tw - Oldest volcanic rocks; lava flows and lahars (Miocene or Oligocene); age 1.6-5.3 my
    1041Tw - Oldest volcanic rocks; lava flows and lahars (Miocene or Oligocene); age 1.6-5.3 my
    1042Twr - Oldest volcanic rocks; rhyolite flow (Miocene or Oligocene); age 1.6-5.3 my
    1043Twd - Oldest volcanic rocks; domes (Miocene or Oligocene); age 1.6-5.3 my
    1051Tm - Volcanic and hypabyssal rocks (Miocene and Oligocene); age 3.4-30.0 my
    1053Td - Rhyolite porphyry and granite (Pliocene(?) and Miocene(?)); age 5.3-23.7 my
    1055Tp - Younger plutons (Tertiary); age 17-39 my
    1080Tpb - Volcanic rocks (Miocene to Eocene); age 5.3-40.0 my
    1125Tov - Orca Group; basalt (early Eocene and late Paleocene); age 23.7-66.4 my
    1135Tov - Orca Group; basalt (early Eocene and late Paleocene); age 52.0-66.4 my
    1234Th - Hypabyssal and plutonic rocks; shallow plutons, small stocks, dikes and sills (Pleistocene, Pliocene, Miocene, or Oligocene); age 1.6-36.6 my
    1250Tg - Hypabyssal and plutonic rocks; granodiorite (Pleistocene, Pliocene, Miocene, or Oligocene); age 1.6-14.4 my
    1273Tgp - Granitic plutons (Eocene); age 23.7-36.6 my
    1300Tgp - Granitic plutons (Eocene); age 36.6-66.4 my
    1308Tgp - Granitic plutons (Eocene); age 36.6-57.8 my
    1310Tet - Tonalite (Eocene); age 36.6-52.0 my
    1320Tsq - Snag pluton (Tertiary); age 57.8-66.4 my
    1350Thgd - Granodiorite of Mount Estelle (Tertiary); age 57.8-84 my
    1380Tgl - Gabbro (Tertiary); age 57.8-66.4 my
    1410Tc - Metamorphic complex of Cottonwood Creek of Richter (1976) (Tertiary); age 15.1-23.7 my
    1655Tgp - Granitic plutons (Eocene); age 23.7-97.5 my
    1790TKmx - Orca Group melange (Tertiary or Cretaceous); age 36.6-84 my
    1940Ku - Marine sedimentary rocks (Early and Late Cretaceous); age 91-144 my
    1941Kun - Nonmarine sedimentary rocks (Late Cretaceous); age 66.4-97.5 my
    2010Kl - Shallow marine sedimentary rocks (Early Cretaceous); age 66.4-113 my
    2110Kl - Shallow marine sedimentary rocks (Early Cretaceous); age 97.5-144 my
    2190KJm - Valedez Group; melange units (mid-Cretaceous, Jurassic(?), and Late Triassic); age 88.5-193 my
    2191KJm - Valdez Group; melange units (mid-Cretaceous, Jurassic(?), and LateTriassic); age 97.5-208 my
    2340Kc - Chisana Formation (Early Cretaceous); age 97.5-208 my
    2460Kgl - Granite (Cretaceous); age 66.4-88.5 my
    2475Kgm - Granite (Cretaceous); age 88.5- 97.5 my
    2493mKqd - Intermediate granitic rocks (Cretaceous); age 84-113 my
    2510MzPzu - Alpine-type ultramafic rocks and gabbro (Cretaceous(?), Jurassic(?), Triassic, Permian, and Pennsylvanian(?)); age 113-144 my
    2520Kg - Mid-Cretaceous plutons (Cretaceous); age 100-119 my
    2525Kg - Quartz-feldspar phorphyry (Cretaceous); age 97.5-119 my
    2540Kg - Diorite, quartz diorite and syenodiorite (Cretaceous); age 105-117 my
    2570Kg - Mid-Cretaceous plutons (Cretaceous); age 100-124 my
    2700Kv - Valdez Group; greenschist-facies flysch (Late Cretaceous); age 66.4-97.5 my
    2702Kv - Valdez Group; greenschist-facies flysch (Late Cretaceous); age 66.4-97.5 my
    2705Kvv - Valdez Group; metamorphosed basalt and tuff (Late Cretaceous); age 66.4-97.5 my
    2710Kvm - Valdez Group; amphibolite-facies flysch (Late Cretaceous); age 5.3-144 my
    2715Kvg - Valdez Group; gneiss and schist (Late Cretaceous); age 5.3-144 my
    2820KJs - Nutzotin Mountains sequence of Berg and others (1972) (Early Cretaceous and Late Jurassic); age 138-152 my
    2824Mzc - Conglomerate and sandstone (Early Cretaceous(?) and Late Jurassic(?) or older); age 66.4-144 my
    2841Kyf - Yakutat Group; flysch (Cretaceous and Jurassic(?)); age 66.4-208 my
    2900Kg - Mid-Cretaceous plutons (Cretaceous); age 66.4-156 my
    2950Kym - Yakutat Group; melange (Cretaceous and Jurassic(?)); age 66.4-208 my
    2951KJyxs - Yakutat Group, melange facies, sandstone (Cretaceous? and Jurassic?); age 66.4-208 my
    2952KJyxc - Yakutat Group, melange facies, conglomerate (Cretaceous? and Jurassic?); age 66.4-208 my
    2953Kym - Yakutat Group; melange (Cretaceous and Jurassic(?)); age 187-245 my
    2954Kym - Yakutat Group; melange (Cretaceous and Jurassic(?)); age 144-183 my
    2980KJyb - Metamorphic rocks of the Brabazon Range (Cretaceous?); age 66.4-152 my
    2981Kyn - Schist of Nunatak Fiord (Cretaceous); age 66.4-152 my
    3000Js - Sedimentary rocks (Late, Middle, or Early Jurassic); age 144-208 my
    3110Jk - Kotsina Conglomerate (Middle or Late Jurassic(?)); age 138-187 my
    3250JTrt - Talkeetna Formation (Early Jurassic and Late Triassic(?)); age 193-225 my
    3340Jnt - Mafic and ultramafic rocks (Middle or Early Jurassic); age 144-245 my
    3401Jc - Chitina Valley batholith (Late Jurassic); age 144-208 my
    3402Jc - Chitina Valley batholith (Late Jurassic); age 144-187 my
    3403Jc - Chitina Valley batholith (Late Jurassic); age 138-187 my
    3405Jnt - Mafic and ultramafic rocks (Middle or Early Jurassic); age 163-198 my
    3540Jnt - Mafic and ultramafic rocks (Middle or Early Jurassic); age 187-245 my
    3545MzPzu - Alpine-type ultramafic rocks and gabbro (Cretaceous(?), Jurassic(?), Triassic, Permian, and Pennsylvanian(?)); age 144-360 my
    3610Jlc - Schist of Liberty Creek of Winkler and others (1981) (Jurassic(?)); 193-230 my
    3820JTrm - McCarthy Formation (Early Jurassic and Late Triassic); age 193-230 my
    4029Trl - Triassic limestone (Late Triassic); age 208-230 my
    4030Trcn - Chitistone and Nizina Limestones (Late Triassic); age 208-230 my
    4320Trgb - Gabbro, diabase, and metagabbro (Late Triassic?); age 208-235 my
    4410PPadm - Diorite complex, metamorphic part (Permian(?) and Pennsylvanian); age 208-230 my
    4415PPadm - Diorite complex, metamorphic part (Jurassic and Triassic; age 208-230 my
    4420Trn - Nikolai Greenstone (Late and(or) Middle Triassic); age 208-240 my
    4890Mzum - Ultramafic and associated rocks (Jurassic and Late Triassic(?)); age 66.4-245 my
    5204PPasm - Dadina schist (Late Paleozoic(?) or older); age 245-320 my
    5245PPasm - Strelna Metamorphics of Plafker and others (1989) (Jurassic(?), Triassic(?), Permian, Early Pennsylvanian and Late Mississippian(?)); age 144-320 my
    5325PPas - Skolai Group, undivided (Early Permian and Pennsylvanian); age 258-320 my
    5460Pago - Gabbro and orthogneiss (Pennsylvanian); age 245-320 my
    5470MzPzu - Alpine-type ultramafic rocks and gabbro (Cretaceous(?), Jurassic(?), Triassic, Permian, and Pennsylvanian(?)); age 245-408 my
    5550PPast - Meta-hornblende andesite (Late Paleozoic(?)); age 245-570 my
    5625PPasm - Strelna Metamorphics (Jurassic(?), Triassic(?), Permian, Early Pennsylvanian and Late Mississippian(?)); age 258-320 my
    5630PPass - Mankomen Group; Slana Spur Formation (Early Permian and Pennsylvanian); age 245-320 my
    5635Pzvc - Metamorphic rocks of the Carden Hills; metavolcaniclastic rocks (Permian(?), Pennsylvanian, Mississippian, and Devonian(?)); age 245-408 my
    5636Pzv - Metamorphic rocks of the Carden Hills; metavolcanic rocks (Permian(?), Pennsylvanian, Mississippian, and Devonian(?)); age 245-408 my
    5641PPast - Greenstone (Late Paleozoic?); age 245-570 my
    5680PPast - Metamorphic complex of Gulkana River (Late Paleozoic(?); age 245-570 my
    5750Ph - Skolai Group, Hasen Creek Formation (Early Permian); age 258-286 my
    5755Pl - Skolai Group; limestone of Hasen Creek Formation (Early Permian); age 258-286 my
    5756Pel - Mankomen Group; Limestone of Eagle Creek Formation (Early Permian); age 258-286 my
    5870Pam - Monzonite-granite complex (Pennsylvanian); age 258-296 my
    5871Paa - Ahtell pluton (Pennsylvanian); age 258-296 my
    5880PPadp - Diorite complex, plutonic part (Permian(?) and Pennsylvanian); age 245-320 my
    5920PPasm - Strelna Metamorphics of Plafker and others (1989) (Jurassic(?), Triassic(?), Permian, Early Pennsylvanian and Late Mississippian(?)); age 286-570 my
    5940Pmg - Mankomen Group, undivided (Early Permian); age 258-286 my
    5950Pe - Mankomen Group; Eagle Creek Formation (Early Permian); age 258-286 my
    5955PPam - Marble (Permian and Early Pennsylvanian); age 258-305 my
    6120PPasc - Skolai Group; Station Creek Formation (Early Permian and Pennsylvanian); age 245-320 my
    6220PPat - Tetelna Volcanics (Early Permian and Pennsylvanian); age 245-320 my
    6931DSml - Carbonate rocks of the lower part of the Mystic stratigraphic sequence (Devonian and Silurian); age 360-505 my
    7080Ddg - Diorite-gabbro (Devonian); age 360-408 my
    7220Pzk - Kaskawulsh Group of Kindle, 1953 (Pennsylvanian, Mississippian, Devonian(?), and older); age 360-570 my
    7230Dp - Metasedimentary rocks (Devonian); age 360-408 my
    7240Pzk - Kaskawulsh Group of Kindle (1953) (Pennsylvanian, Mississippian, Devonian(?), and older); age 286-505 my
    7320Pzsc - Metabasalt and subordinate metasedimentary rocks (Late Devonian); age 360-408 my
    7400Pzk - Kaskawulsh Group of Kindle (1953) (Pennsylvanian, Mississippian, Devonian(?), and older); age 360-570 my

    QCLASS
    QCLASS is a positive integer value (4 5 B) item in the polygon attribute table. Values range discontinuously from 0 to 4650. It is a numeric code for subdivided Quaternary units. See the USGS publication SIM 2877, for full descriptions of the geologic units. (Source: this data set)

    ValueDefinition
    1000Qs - Surficial deposits, undifferentiated (Quaternary)
    1050Qa - Alluvium (Holocene)
    1070Qu - Slope deposits, undifferentiated (Holocene and Pleistocene)
    1071Qu - Slope deposits, undifferentiated (Holocene and Pleistocene)
    1072Qcb - Bluff colluvium (Holocene)
    1080Ql - Landslide deposits (Holocene and Pleistocene)
    1090Qao - Older alluvium (Holocene and Pleistocene)
    1120Qfl - Fine-grained deposits (Holocene)
    1150Qb - Beach and delta deposits (Holocene)
    1160Qfl - Fine-grained deposits (Holocene)
    1180Qms - Mineral springs deposits (Holocene)
    1200Qe - Eolian deposits (Holocene)
    1240Qcr - Copper River deposits (Pleistocene)
    1260Rock debris on glacier ice (Holocene)
    1270Qrg - Rock glacier deposits (Holocene)
    1300Qag - Drift of Alaskan glaciation (Holocene)
    1350Qg - Drift of older glaciations (Pleistocene)
    1301Qag - Drift, neoglacial (Holocene)
    1380Qg - Older Wisconsin glaciation deposits (Pleistocene)
    1900Qg - Glaciations older than Late Wisconsin (Quaternary, Pleistocene)
    2200Qg - Glaciations (Pliocene?)
    3011Qwws - Mount Wrangell volcano; shield lavas (Holocene and Pleistocene)
    3012Qwwv - Mount Wrangell volcano; valley-fill lavas (Holocene and Pleistocene)
    3013Qwd - Mt. Drum volcano; lava flows (Pleistocene)
    3014Qws - Wrangell lava, younger part (Holocene, Pleistocene)
    3015Qwc - Capital Mountain volcano; shield and intracaldera lavas (Pleistocene)
    3100Qws - Pyroclastic deposits (Holocene, Pleistocene)
    3120Qvd - Volcaniclasitic deposits; volcanic debris flows (Pleistocene)
    3140Qpf - Volcaniclastic deposits; pyroclastic flows (Pleistocene)
    3160Qws - Mt. Sanford volcano; lava flows (Pleistocene)
    3200Qbc - Volcaniclastic deposits; cinder cones, flows, and tuffs (Pleistocene)
    3551Qwj - Mt. Jarvis volcanoes; shield and intracaldera lavas (Pleistocene)
    4011Qwdr - Mt. Drum volcano; domes (Pleistocene)
    4012Qwsr - Mt. Sanford volcano; rhyolite dome and flow (Pleistocene)
    4013Qwjd - Mt. Jarvis volcanoes; domes (Pleistocene)
    4020Qwcr - Capital Mountain volcano; central andesite plug, rhyolite laccolith and dike (Pleistocene)
    4030Qwcr - Radial dike swarm and plug (Pleistocene)
    4510QTwt - Tanada Peak volcano; shield and intracaldera lavas (Pleistocene and Pliocene)
    4520QTwi - Older volcanic and sedimentary rocks; flows of the Icefield Plateau (Pleistocene, Pliocene, or Miocene)
    4550QTw - Older volcanic and sedimentray rocks; lava flows and sedimentary rocks (Pleistocene, Pliocene, or Miocene)
    4650QTwr - Older volcanic and sedimentary rocks; domes and intrusive rocks (Pleistocene, Pliocene, or Miocene)

    NSAMOD
    NSAMOD is a character (8 10 C) item in the polygon (Source: this data set)

    ALT - hydrothermal alteration HFS - contact metamorphism; hornfels

    SOURCE
    SOURCE is a character (6 8 C) item found in both the arc and polygon attribute tables. The values are abbreviated codes representing the original source reference for the polygon or arc feature. The format for source is XX###, where XX is a two letter code for the 1:250,000 scale quadrangle and ### is a three digit number (with leading zeros). All source codes with '001' are unspecified sources for water and ice features, often paper topographic maps, and DRG or DLG files. (Source: this data set)

    ValueDefinition
    BG002Plafker, George, in prep, Geology of Bering Glacier and Icy Bay quadrangles
    BG004Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.
    CV003Winkler, G.R., and Plafker, George, 1993, Geologic map of the Cordova and Middleton Island quadrangles, southern Alaska: U.S. Geological Survey Miscellaneous Investigations Map I-1984, scale 1:250,000.
    CV004Richter, D.H., Preller, C.C., Labay, K.A., and Shew, Nora, 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.
    CV005Pavlis, T.L., and Sisson, V.B., 2002, Geologic map of the Bremner River area, written communication
    CV006Pavlis, T.L., and Sisson, V.B., 2002, Geologic map of the Van Cleve Glacier area, written communication
    GU002Nokleberg, W.J., Richter, D.H., Ferrians, O.J., Lange, I.M., Campbell, D.L., Aleinikoff, J.N., Smith, T.E., and Koch, R.D., in press, Introduction, previous studies, acknowledgements, detailed description of map units, geologic and tectonic summary, and references cited for preliminary map of the Gulkana quadrangle, eastern Alaska Range and northern Copper River basin, Alaska: U.S. Geological Survey Open-File Report, in press (USGS CAD coverage 1997)
    GU003Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.
    GU004Schmoll, H.R., and Yehle, L.A., 2002, written communication, cited in Richter, D.H., Preller, C.C. Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.
    IB002Plafker, George, in prep, Geology of Bering Glacier and Icy Bay quadrangles
    IB003Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.
    MC002MacKevett, E.M., Jr., 1978, Geologic map of the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-1032, scale 1:250,000.
    MC003Richter, D.H., Ratte, J.C., Leeman, W.P., and Menzies, Martin, 2000, Geologic map of the McCarthy D-1 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-2695, 1 sheet, scale 1:63,3600.
    MC004Richter, D.H., 2001, Surficial geology generalized from Yehle, Lynn, and other sources, unpublished data: Yehle, L.A., 2001 Reconnaissance surficial geologic maps of McCarthy B-6, 7, 8, and C-8 quadrangles, Alaska: U.S. Geological Survey Administrative Report.
    MC006Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.
    MS002Plafker, George, in prep, Geology of Mount Saint Elias and Yakutat quadrangles: U.S. Geological Survey Open-File Report.

    NB002Richter, D.H., 1976, Geologic map of the Nabesna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-932, scale 1:250,000.
    NB007Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:250,000.
    NB008Richter, D.H., Moll-Stalcup, E.J., Duffield, W.A., and Shew, Nora, 1997, Geologic map of the Nabesna A-6 quadrangle, south-central Alaska: U.S. Geological Survey Open-File Report 97-475, scale 1:63,360.
    VA002Winkler, G.R., Silberman, M.L., Grantz, Arthur, Miller, R.J., and MacKevett, E.M., Jr., 1981, Geologic map and summary geochronology of the Valdez quadrangle, southern Alaska: U.S. Geological Survey Open-File Report 80-892-A, scale 1:250,000, 2 sheets (modified by Winker, 1997)
    VA004Plafker, George, Lull, J.S., Nokleberg, W.J., Pessel, G.A., Wallace, W.K., and Winkler, G.R., 1992, Geologic map of the Valdez A-4, B-3, C-3, C-4, D-4 quadrangles, northern Chugach Mountians and southern Copper River Basin, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-2164.
    VA005Winkler, G.R., 2002, unpublished data, cited in Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.
    VA006Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.
    VA007Richter, D.H., Lanphere, M.A., McGimsey, R.G., Moore, R.B., Nye, C.J., and Winkler, G.R., in prep, Geologic map of the Valdez D-1 and D-2 quadrangles, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Series, scale 1:63,360.
    VA008Schmoll, H.R., and Yehle, L.A., 2001, unpublished data, cited in Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.
    YA002Plafker, George, in prep, Geology of Mount Saint Elias and Yakutat quadrangles: U.S. Geological Survey Open-File Report, scale 1:250,000.
    YA003Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska: U.S. Geological Survey Scientific Investigations Series Map SIM-2877, scale 1:350,000.

    arcs
    Characteristics of the arc features in the geology coverages are coded in the arc attribute table. Table <cov>.aat includes the following items: ARC-CODE, ARC-PARA1, and SOURCE. For explanation of SOURCE, see metadata section 2.5 Lineage and/or attribute definitions for polygons. (Source: this data set)

    ARC-CODE
    ARC-CODE is a positive integer value (3 3 I) item in the arc attribute table. Values range discontinuously from 1 to 99. Values match one-for-one with geologic features (such as stratigraphic boundary, fault, etc.). Some ARC-CODE features have additional modifiers in item ARC-PARA1. (Source: this data set)

    ValueDefinition
    1Stratigraphic or intrusive contact, location certain
    2Stratigraphic or intrusive contact, location approximate
    4Normal fault, location certain; if ARC-PARA1 = 1 then upthrown side is on right from origin
    5Normal fault, location approximate; if ARC-PARA = 1 then upthrown side is on right from origin
    6Normal fault, location inferred or queried; if ARC-PARA1 = 1 then upthrown side is on right from origin
    7Shoreline or riverbank
    9Boundary of altered zone or hornfels
    10Thrust fault, location certain; teeth on right from origin
    11Thrust fault, location approximate; teeth on right from origin
    12Thrust fault, location inferred; teeth on right from origin
    14Caldera wall, known location; caldera is on left from the origin
    15Glacier ice boundary
    19Submerged end moraine
    28Caldera wall, concealed
    30Fault, sense of displacement uncertain, location certain
    31Fault, sense of displacement uncertain; location approximate
    32Fault, sense of displacement uncertain, location inferred
    50Dikes, chiefly andesite and dacite; ARC-PARA1 = 301 designates andesitic dike swarm at Capital Mountain volcano
    51Contact, concealed
    52Normal fault, concealed; if ARC-PARA1 = 1 upthrown side is on the right from origin
    53Thrust fault, concealed; teeth on right from origin
    57Right lateral fault, concealed
    58Left lateral fault, concealed
    87Right lateral fault, location certain
    88Right lateral fault, location approximate
    90Left lateral fault, location certain
    93Lineament
    99Bounding line of coverage

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    This data set was prepared by Keith Labay (SAIC), Nora Shew (USGS), and David Pray (Raytheon STX).

  3. To whom should users address questions about the data?

    U.S. Geological Survey
    c/o Frederic H. Wilson
    Geologist
    4200 University Drive
    Anchorage, Alaska 99508-4667
    U.S.A.

    907-786-7448 (voice)
    fwilson@usgs.gov

Why was the data set created?
This data set is a compilation of many sources to create a regional and correlated geologic history of the area of Wrangell-St. Elias National Park and Preserve.

How was the data set created?
  1. Where did the data come from?

    BG002 and IB002 (source 1 of 17)
    Plafker, George, Unpublished material, Geology of Bering Glacier and Icy Bay quadrangles.

    Type_of_Source_Media: stable-base material
    Source_Scale_Denominator: 250000
    Source_Contribution: geology

    CV003 (source 2 of 17)
    Winkler, G.R., and Plafker, George, 1993, Geologic map of the Cordova and Middleton Island quadrangles, southern Alaska: U.S. Geological Survey Miscellaneous Investigations Map Map I-1984.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 250000
    Source_Contribution: geology

    CV005 (source 3 of 17)
    Pavlis, T.L., and Sisson, V.B., Unpublished material, Geologic map of the Bremner River area.

    Type_of_Source_Media: digital file (PDF)
    Source_Scale_Denominator: 63360
    Source_Contribution: geology

    CV006 (source 4 of 17)
    Pavlis, T.L., and Sisson, V.B., Unpublished material, Geologic map of the Van Cleve Glacier area.

    Type_of_Source_Media: digital file (PDF)
    Source_Scale_Denominator: 63360
    Source_Contribution: geology

    GU002 (source 5 of 17)
    W.J., Nokleberg, Richter, D.H., Ferrians, O.J., Lange, I.M., Campbell, D.L., Aleinikoff, J.N., Smith, T.E., and Koch, R.D., Unpublished material, Introduction, previous studies, acknowledgements, detailed description of map units, geologic and tectonic summary, and references cited for preliminary map of the Gulkana quadrangle, eastern Alaska Range and northern Copper River basin, Alaska.

    Type_of_Source_Media: digital file (CAD)
    Source_Scale_Denominator: 250000
    Source_Contribution: geology

    GU004 and VA008 (source 6 of 17)
    Schmoll, H.R., and Yehle, L.A., Unpublished material, written communication.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 63360
    Source_Contribution: surficial geology

    MC002 (source 7 of 17)
    Jr., E.M. MacKevett , 1978, Geologic map of the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-1032.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 250000
    Source_Contribution: geology

    MC003 (source 8 of 17)
    Richter, D.H., Ratte, J.C., Leeman, W.P., and Menzies, Martin, 2000, Geologic map of the McCarthy D-1 quadrangle, Alaska: U.S. Geological Survey Geologic Investigations Series I-2695.

    Online Links:

    Type_of_Source_Media: digital data (Arc/Info coverage)
    Source_Scale_Denominator: 63360
    Source_Contribution: geology

    MC004 (source 9 of 17)
    Richter, D.H., 2001, surficial geology generalized from Yehle, Lynn, and other sources in U.S. Geological Survey Administrative Report.

    Type_of_Source_Media: paper
    Source_Contribution: geology

    BG004, CV004, GU003, IB003, MC006, NB007, VA006, and YA003 (source 10 of 17)
    Richter, D.H., Preller, C.C., Labay, K.A., and Shew, N.B., 2005, Geology of Wrangell-Saint Elias National Park and Preserve, southcentral Alaska.

    Type_of_Source_Media: digital data (Arc/Info coverage)
    Source_Scale_Denominator: 350000
    Source_Contribution: geology

    MS002 and YA002 (source 11 of 17)
    Plafker, George, Unpublished material, Geology of the Mount Saint Elias and Yakutat quadrangles, Alaska.

    Type_of_Source_Media: stable-base material
    Source_Scale_Denominator: 250000
    Source_Contribution: geology

    NB002 (source 12 of 17)
    Richter, D.H., 1976, Geologic map of the Nabesna quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-932.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 250000
    Source_Contribution: geology

    NB008 (source 13 of 17)
    Richter, D.H., Moll-Stalcup, E.J., Duffield, W.A., and Shew, Nora, 1997, Geologic map of the Nabesna A-6 quadrangle, Alaska: U.S. Geological Survey Open-File Report 97-475.

    Type_of_Source_Media: stable-base material
    Source_Scale_Denominator: 63360
    Source_Contribution: geology

    VA002 (source 14 of 17)
    Winkler, G.R., Silberman, M.L., Grantz, Arthur, Miller, R.J., and MacKevett, E.M., 1981, Geologic map and summary geochronology of the Valdez quadrangle, southern Alaska: U.S. Geological Survey Open-File Report 80-892-A.

    Type_of_Source_Media: stable-base material
    Source_Scale_Denominator: 250000
    Source_Contribution: geology

    VA004 (source 15 of 17)
    Plafker, George, Lull, J.S., W.J., Nokleberg, G.A., Pessel, Wallace, W.K., and Winkler, G.R., 1992, Geologic map of the Valdez A-4, B-3, C-3, C-4, D-4 quadrangles, northern Chugach Mountains and southern Copper River Basin, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-2164.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 250000
    Source_Contribution: geology

    VA005 (source 16 of 17)
    Winkler, G.R., Unpublished material, personal communication.

    Type_of_Source_Media: personal communication
    Source_Contribution: geology

    VA007 (source 17 of 17)
    Richter, D.H., Lanphere, M.A., McGimsey, R.G., Moore, R.B., Nye, C.J., Rosenkrans, D.S., and Winkler, G.R., Unpublished material, Geologic map of the Valdez D-1 and D-2 quadrangles, Alaska: U.S. Geological Survey Scientific Investigations Map ###.

    Type_of_Source_Media: digital data
    Source_Scale_Denominator: 63360
    Source_Contribution: geology

  2. What changes have been made?

    Date: 2004 (change 1 of 1)
    The linework for the geology compilation was hand digitized from material of various media and scale. The arcs and polygons were attributed. The spatial databases are provided UTM projection and geographic coordinates. The native ARC/Info coverages have been exported to an interchange file format, .e00, and also converted to ArcView shape files

    Person responsible for change:

    U.S. Geological Survey, Alaska Science Center
    c/o Frederic H. Wilson
    Geologist
    4200 University Drive
    Anchorage, Alaska 99508
    USA

    907-786-7448 (voice)
    fwilson@usgs.gov

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

    The original source materials for this data set are from various scales (1:63,360 to 1:250,000), medium (digital, mylar, paper), and scope (bedrock, surficial, tectonic). All vector features were originally hand digitized on a large digitizing tablet or on screen. Vector and polygon attributes were assigned based on the original source. The digital data has been visually checked, and the geologic map has been technically reviewed and edited.

  2. How accurate are the geographic locations?

    Users of this digital data set should respect the intentions of the original mappers, compilers, and the limitations of a thematic map. This compilation was compiled from sources with scales ranging from 1:63,360 to 1:250,000, however this compilation is being published at 1:350,000 scale.

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    This dataset was used to create the geologic map portion of the Wrangell-St. Elias National Park and Preserve geologic map. Text files, graphics, and other files used to produce the publication are not included here.

  5. How consistent are the relationships among the observations, including topology?

    Each geology coverage is a network coverage containing attributed arcs and polygons. Each polygon has a coded attribute designating the mapped geologic unit. Faults, stratigraphic contacts, and other linear features are represented as arcs. When a fault is also a stratigraphic contact, only a single arc is present. Dangling arcs may be present (faults, dikes, etc.)

How can someone get a copy of the data set?
Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
None. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data.

  1. Who distributes the data set? (Distributor 1 of 1)

    U.S. Geological Survey
    MS 902
    Box 25286
    Denver Federal Center
    Lakewood, CO 80225
    USA

    1-888-ASK-USGS (voice)

  2. What's the catalog number I need to order this data set?

    Open-File Report 2005-1342

  3. What legal disclaimers am I supposed to read?

    This world-wide-web publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.

    Although all data and software published on this web-site have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.

  4. How can I download or order the data?

Who wrote the metadata?
Dates:
Last modified: 08-Sep-2005

Metadata author:
U.S. Geological Survey
c/o Nora B. Shew
4200 University Drive
Anchorage, AK 99508
USA

907-786-7445 (voice)
nshew@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Generated by mp version 2.4.30 on Mon Sep 12 09:25:53 2005