• Digital Geologic-GIS Map of National Park American Samoa, American Samoa (NPS, GRD, GRI, NPSA, NPSA digital map) adapted from University of Hawaii, Cartographic Laboratory Atlas maps by Theroux, Wingert and others, geology maps after Stearns (1981)

    Metadata Updated: June 30, 2021

    The Digital Geologic-GIS Map of National Park American Samoa, American Samoa is composed of GIS data layers and GIS tables, and is available in the following GRI-supported GIS data formats: 1.) a 10.1 file geodatabase (npsa_geology.gdb), a 2.) Open Geospatial Consortium (OGC) geopackage, and 3.) 2.2 KMZ/KML file for use in Google Earth, however, this format version of the map is limited in data layers presented and in access to GRI ancillary table information. The file geodatabase format is supported with a 1.) ArcGIS Pro map file (.mapx) file (npsa_geology.mapx) and individual Pro layer (.lyrx) files (for each GIS data layer), as well as with a 2.) 10.1 ArcMap (.mxd) map document (npsa_geology.mxd) and individual 10.1 layer (.lyr) files (for each GIS data layer). The OGC geopackage is supported with a QGIS project (.qgz) file. Upon request, the GIS data is also available in ESRI 10.1 shapefile format. Contact Stephanie O'Meara (see contact information below) to acquire the GIS data in these GIS data formats. In addition to the GIS data and supporting GIS files, three additional files comprise a GRI digital geologic-GIS dataset or map: 1.) A GIS readme file (npsa_geology_gis_readme.pdf), 2.) the GRI ancillary map information document (.pdf) file (npsa_geology.pdf) which contains geologic unit descriptions, as well as other ancillary map information and graphics from the source map(s) used by the GRI in the production of the GRI digital geologic-GIS data for the park, and 3.) a user-friendly FAQ PDF version of the metadata (npsa_geology_metadata_faq.pdf). Please read the npsa_geology_gis_readme.pdf for information pertaining to the proper extraction of the GIS data and other map files. Google Earth software is available for free at: https://www.google.com/earth/versions/. QGIS software is available for free at: https://www.qgis.org/en/site/. Users are encouraged to only use the Google Earth data for basic visualization, and to use the GIS data for any type of data analysis or investigation. The data were completed as a component of the Geologic Resources Inventory (GRI) program, a National Park Service (NPS) Inventory and Monitoring (I&M) Division funded program that is administered by the NPS Geologic Resources Division (GRD). For a complete listing of GRI products visit the GRI publications webpage: For a complete listing of GRI products visit the GRI publications webpage: https://www.nps.gov/subjects/geology/geologic-resources-inventory-products.htm. For more information about the Geologic Resources Inventory Program visit the GRI webpage: https://www.nps.gov/subjects/geology/gri,htm. At the bottom of that webpage is a "Contact Us" link if you need additional information. You may also directly contact the program coordinator, Jason Kenworthy (jason_kenworthy@nps.gov). Source geologic maps and data used to complete this GRI digital dataset were provided by the following: University of Hawaii, Cartographic Laboratory. Detailed information concerning the sources used and their contribution the GRI product are listed in the Source Citation section(s) of this metadata record (npsa_geology_metadata.txt or npsa_geology_metadata_faq.pdf). Users of this data are cautioned about the locational accuracy of features within this dataset. Based on the source map scales of 1:56,000 (Ofu/Olosega and Tau maps) or 1:63,000 (Tutuila map) and United States National Map Accuracy Standards features are within 28.45 meters or 93.33 feet (1:56,000 scale maps) or 32.0 meters or 105 feet (1:63,000 scale maps) of their actual location as presented by this dataset. Users of this data should thus not assume the location of features is exactly where they are portrayed in Google Earth, ArcGIS, QGIS or other software used to display this dataset. All GIS and ancillary tables were produced as per the NPS GRI Geology-GIS Geodatabase Data Model v. 2.3. (available at: https://www.nps.gov/articles/gri-geodatabase-model.htm).

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided.

    Downloads & Resources

    References

    https://irma.nps.gov/DataStore/Reference/Profile/1045518

    Dates

    Metadata Created Date March 17, 2021
    Metadata Updated Date June 30, 2021

    Metadata Source

    Harvested from NPS-Harvest - NRSS Data Store

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date March 17, 2021
    Metadata Updated Date June 30, 2021
    Publisher National Park Service
    Unique Identifier Unknown
    Maintainer
    Identifier NPS_DataStore_1045518
    Data First Published 2021-02-05
    Data Last Modified 2021-02-05
    Category Geospatial Dataset
    Public Access Level public
    Bureau Code 010:24
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID D:\IRMA\DataStore\Application\OpenData\v1.1\NPS-DataStore.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Data Quality True
    Homepage URL https://irma.nps.gov/DataStore/Reference/Profile/1045518
    Program Code 010:118, 010:119
    Related Documents https://irma.nps.gov/DataStore/Reference/Profile/1045518
    Source Datajson Identifier True
    Source Hash 36032594759ecd6e0bed3ea020d99ac7081e45c6
    Source Schema Version 1.1
    Spatial -170.85,-14.38,-169.41,-14.14
    Temporal 2021-02-05/2021-02-05

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