Unpublished Digital Bedrock Geologic Map of the northern portion of Blue Ridge Parkway, Virginia (NPS, GRD, GRI, BLRI, BLRN digital map) adapted from an unpublished U.S. Geological Survey Map by Carter, Crider, Southworth and Aleinikoff (2016)

The Unpublished Digital Bedrock Geologic Map of the northern portion of Blue Ridge Parkway, Virginia is composed of GIS data layers and GIS tables in a 10.1 file geodatabase (blrn_geology.gdb), a 10.1 ArcMap (.MXD) map document (blrn_geology.mxd), individual 10.1 layer (.LYR) files for each GIS data layer, an ancillary map information (.PDF) document (blrn_geology.pdf) which contains source map unit descriptions, as well as other source map text, figures and tables, metadata in FGDC text (.TXT) and FAQ (.HTML) formats, and a GIS readme file (blrn_gis_readme.pdf).  Please read the blrn_gis_readme.pdf for information pertaining to the proper extraction of the file geodatabase and other map files.  To request GIS data in ESRI 10.1 shapefile format contact Stephanie OMeara (stephanie.omeara@colostate.edu; see contact information below).  The data is also available as a 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.  Google Earth software is available for free at: http://www.google.com/earth/index.html.  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).  Source geologic maps and data used to complete this GRI digital dataset were provided by the following: U.S. Geological Survey.  Detailed information concerning the sources used and their contribution the GRI product are listed in the Source Citation section(s) of this metadata record (blrn_metadata_faq.html; available at http://nrdata.nps.gov/geology/gri_data/gis/blri/blrn_metadata_faq.html).  Users of this data are cautioned about the locational accuracy of features within this dataset.  As denoted by location confidence values of individual features, features are within either 15 meters (certain), 30 or 60 meters (approximate) or 200 meters (inferred) of the actual position. See feature attribution for the value associated with each feature. Users of this data should thus not assume the location of features is exactly where they are portrayed in Google Earth, ArcGIS 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. 2.2. (available at: http://science.nature.nps.gov/im/inventory/geology/GeologyGISDataModel.cfm).  The GIS data projection is NAD83, UTM Zone 17N, however, for the KML/KMZ format the data is projected upon export to WGS84 Geographic, the native coordinate system used by Google Earth.  The data is within the area of interest of Blue Ridge Parkway.

Tags: blri, blrnatd-geologic-attitude-observation-localities, blrnflt-faults, blrnglg-bedrock-units, blrnglga-bedrock-contacts, blrngol-geologic-observation-localities, blrngsl-geologic-sample-localities, blrnmin-mine-point-features, blue-ridge-parkway, digital-data, digital-geologic-gis-map, digital-geologic-map, environment, file-geodatabase, geodatabase, geologic-gis-map, geologic-map, geologic-resource-evaluation, geologic-resources-division, geologic-resources-inventory, geologic-unit-descriptions, geologic-unit-information-table, geologic-units, geology, geology-help-map-document, geoscientific-information, gis-data, google-earth, grd, gre, gri, kml, kmz, map-package, map-table, national-park-service, north-america, north-carolina, nps, source-geologic-maps, source-map-information-table, source-maps, unit-table, united-states, us, usa, virginia
Organization: Department of the Interior