Unpublished Digital Geologic-GIS Map of the Chattanooga Quadrangle, Tennessee (NPS, GRD, GRI, CHCH, CHOO digital map) adapted from a Tennessee Geological Survey Geologic Quadrangle Map by Finlayson et. alo. (1966)

Metadata also available as

Frequently-anticipated questions:

What does this data set describe?
    Title:
    Unpublished Digital Geologic-GIS Map of the Chattanooga Quadrangle, Tennessee (NPS, GRD, GRI, CHCH, CHOO digital map) adapted from a Tennessee Geological Survey Geologic Quadrangle Map by Finlayson et. alo. (1966)
    Abstract:
    The Unpublished Digital Geologic-GIS Map of the Chattanooga Quadrangle, Tennessee is composed of GIS data layers and GIS tables in a 10.1 file geodatabase (choo_geology.gdb), a 10.1 ArcMap (.MXD) map document (choo_geology.mxd), individual 10.1 layer (.LYR) files for each GIS data layer, an ancillary map information (.PDF) document (chch_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 (chch_gis_readme.pdf). Please read the chch_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). Presently, a GRI Google Earth KMZ/KML product doesn't exist for this map. 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: Tennessee Division of Geology. Detailed information concerning the sources used and their contribution the GRI product are listed in the Source Citation section(s) of this metadata record (choo_metadata_faq.html; available at <http://nrdata.nps.gov/geology/gri_data/gis/chch/choo_metadata_faq.html>). Users of this data are cautioned about the locational accuracy of features within this dataset. Based on the source map scale of 1:24,000 and United States National Map Accuracy Standards features are within (horizontally) 12.2 meters or 40 feet 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 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. 2.3. (available at: <http://science.nature.nps.gov/im/inventory/geology/GeologyGISDataModel.cfm>). The GIS data projection is NAD83, UTM Zone 16N. The data is within the area of interest of Chickamauga & Chattanooga National Military Park.
    Supplemental_Information:
    The data layers (feature classes) that comprise the Unpublished Digital Geologic-GIS Map of the Chattanooga Quadrangle, Tennessee include: CHOOGLG (Geologic Units), CHOOGLGA (Geologic Contacts), CHOOATD (Geologic Attitude Observation Localities), CHOOSYM (Map Symbology), CHOOFLD (Folds), CHOOFLT (Faults) and CHOOSEC (Geologic Cross Section Lines). There are three additional ancillary map components, the Geologic Unit Information Table (chchunit), the Source Map Information Table (chchmap) and the Map PDF Document (chch_geology.pdf). Refer to the NPS GRI Geology-GIS Geodatabase Data Model v. 2.3 (available at: <http://science.nature.nps.gov/im/inventory/geology/GeologyGISDataModel.cfm>) for detailed data layer (feature class) and table specifications including attribute field parameters, definitions and domains, and implemented topology rules and relationship classes.

  1. How should this data set be cited?

    National Park Service (NPS) Geologic Resources Inventory (GRI) program, 20170606, Unpublished Digital Geologic-GIS Map of the Chattanooga Quadrangle, Tennessee (NPS, GRD, GRI, CHCH, CHOO digital map) adapted from a Tennessee Geological Survey Geologic Quadrangle Map by Finlayson et. alo. (1966).

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -85.3750001089
    East_Bounding_Coordinate: -85.250000004
    North_Bounding_Coordinate: 35.125001791
    South_Bounding_Coordinate: 35.000000002

  3. What does it look like?

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

    Calendar_Date: 06-Jun-2017
    Currentness_Reference: ground condition

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

    Geospatial_Data_Presentation_Form: map

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the 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: 16
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -87.0
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000007
      Ordinates (y-coordinates) are specified to the nearest 0.000007
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    Refer to the NPS GRI Geology-GIS Geodatabase Data Model v. 2.3 (available at: <http://science.nature.nps.gov/im/inventory/geology/GeologyGISDataModel.cfm>) for detailed feature class and table attribute field parameters, definitions and domains, and implemented relationship classes, as well as for implemented feature class topology rules.
    Entity_and_Attribute_Detail_Citation:
    NPS GRI Geology-GIS Geodatabase Data Model v. 2.3. (available at: <http://science.nature.nps.gov/im/inventory/geology/GeologyGISDataModel.cfm>)

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?

    James Winter and Georgia Hybels (Colorado State University)

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

    Stephanie O'Meara
    Colorado State University
    Research Associate, Geologist/GIS Specialist/Data Manager
    1201 Oak Ridge Drive, Suite 200
    Fort Collins, Colorado 80525
    USA

    (970) 491-6655 (voice)
    stephanie.omeara@colostate.edu

    Hours_of_Service: 9:00 a.m. to 5:00 p.m. (MST), Monday - Friday

Why was the data set created?
The data are intended to assist NPS personnel in the protection and management of Chickamauga & Chattanooga National Military Park.

How was the data set created?
  1. From what previous works were the data drawn?

    TNGS Geologic Quadrangle Map 105 SE (source 1 of 1)
    Finlayson, C.P., Barnes, R.H., Colvin, J.M., Jr., 1966, Geologic Map and Mineral Resources Summary of the Chattanooga Quadrangle (Including the Tennessee portion of the Fort Oglethorpe Quadrangle), Georgia-Tennessee: Geologic Quadrangle Map 105 SE, Tennessee Geological Survey (TNGS), Nashville, Tennessee.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24000
    Source_Contribution:
    Geologic features present on the source map were digitized using a .TIF image of the paper/mylar map that was scanned at 300dpi and georeferenced in NAD83 UTM. The source map scan was also used to attribute features, as well as to check (QC) line quality, both positionally and spatially, and feature attribution. Ancillary source map text, including unit descriptions, and graphics, if present, were captured, formatted and added to the ancillary map PDF document. See the Process Step section for additional information.

  2. How were the data generated, processed, and modified?

    Date: 06-Jun-2017 (process 1 of 1)
    1.) GIS features were digitized from a TIF image of the source map scanned at 300dpi and georeferenced in NAD83 UTM coordinates. See the Source Information Contribution section(s) for specific source map details. Geology features were digitized into a data model compliant geodatabase. For details on the GRI data model see the NPS GRI Geology-GIS Geodatabase Data Model v. 2.3 (available at: <http://science.nature.nps.gov/im/inventory/geology/GeologyGISDataModel.cfm>). 2.) Line quality was checked against the source scan to ensure that GIS features were represented accurately, both positionally and spatially. 3.) Feature attribution was derived using the source map. 4.) Data Model topology rules were validated for all features and any topology errors corrected. 5.) Quality control (QC) consisting of a visual check of the data against its source, as well as running a GRI developed ArcObjects tool to check for GRI data model validation and feature-related consistency, was conducted. 6.) The UNIT and MAP tables were populated and checked against the source(s). Relationship classes were also added and used to ensure attribution consistency between feature class and table attribution. 7.) Feature symbology was produced for all feature classes. An attempt was made to best match symbology to its source map, however, in some cases feature symbology maybe slightly modified, primarily based on the limitations of the ArcGIS geology style. In some cases, however, symbology may have been modified to reconcile differences from multiple sources. 8.) An ArcMap Document was produced, in part by a GRI finalize mxd tool, and layer (.lyr) files saved for all data layers. 9.) The ancillary map information PDF document, see the Supplemental Information section for additional information, was produced from textual information and figures present on the source map(s) and/or in digital data files. If applicable, source map images were produced at 150dpi or greater resolution and optical character recognition (OCR) software was used to produce text from source map text. The text, source map images and other ancillary source map information were added to a Help & Manual (.hmxz) template file. The .hmxz file was then compiled to produce the ancillary map information document. Any compilation errors were then checked and corrected and the document was reviewed for content, usability and grammatical errors.

    Person who carried out this activity:

    Stephanie O'Meara
    Colorado State University
    Research Associate, Geologist/GIS Specialist/Data Manager
    1201 Oak Ridge Drive, Suite 200
    Fort Collins, Colorado 80525-5589
    USA

    (970) 491-6655 (voice)
    stephanie.omeara@colostate.edu

    Hours_of_Service: 9:00 a.m. to 5:00 p.m. (MST), Monday - Friday
    Data sources used in this process:
    • TNGS Geologic Quadrangle Map 105 SE

  3. What similar or related data should the user be aware of?

    National Park Service Geologic Resources Inventory (GRI) program, 20170606, Metadata for the Unpublished Digital Geologic-GIS Map of the Chattanooga Quadrangle, Tennessee (NPS, GRD, GRI, CHCH, CHOO digital map).

    Online Links:

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

    Feature and table attribution was derived and checked with the source map(s). Attribution was checked (QCd) for errors. Users of this data are advised to FULLY and CAREFULLY READ the "DISTRIBUTION LIABILITY" section of this metadata before using the data.

  2. How accurate are the geographic locations?

    Data was digitized from a georeferenced source map TIF image(s) (300dpi). Users of this data are cautioned about the locational accuracy of features within this dataset. Based on the source map scale and United States National Map Accuracy Standards features are within (horizontally) 12.2 meters or 40 feet 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 portrayed are in ArcGIS or other software used to display this dataset. The PRECISION of any Shapefile (SHP) files is DOUBLE. The maximum root mean square (RMS) horizontal accuracy of the georeferenced image as measured in ArcMap is 5.2 meters. Coordinate tics on the georeferenced (registered and rectified) source map image(s) were checked against control points that had the exact specified coordinates of the tic. The direct distance between the image tic and its control point were measured. All measured distances were less than 50% of the required distance to meet National Map Accuracy Standards (1/50th of an inch for maps at 1:20,000 scale and smaller). Features were checked (QCd) after digitizing for positional accuracy errors using the georeferenced source map image.

  3. How accurate are the heights or depths?

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

    All data is considered complete to the extent of the source map(s).

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

    GIS data in 10.1 file geodatabase, and shapefile (.SHP) and DBASEIV (.DBF) table file formats.

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:
Not for use at scale greater than 1:24,000 (source map scale). Users of this data are cautioned about the locational accuracy of features within this dataset. Based on the source map scale and United States National Map Accuracy Standards features are within (horizontally) 12.2 meters or 40 feet 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 or other software used to display this dataset.

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

    Stephanie O'Meara
    Colorado State University
    Research Associate, Geologist/GIS Specialist/Data Manager
    1201 Oak Ridge Drive, Suite 200
    Fort Collins, Colorado 80525
    USA

    (970) 491-6655 (voice)
    stephanie.omeara@colostate.edu

    Hours_of_Service: 8:00 a.m. to 4:00 p.m. (MST), Monday - Friday
    Contact_Instructions:
    GRI data are available at: <http://irma.nps.gov/App/Reference/Search>
  2. What's the catalog number I need to order this data set?

    GIS map data available in 10.1 file geodatabase format (in choogdb.zip)

  3. What legal disclaimers am I supposed to read?

    The National Park Service shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics are not legal documents and are not intended to be used as such.

    The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistent within the limitations of geospatial data in general and these data in particular. The related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data.

    The National Park Service gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. It is strongly recommended that these data are directly acquired from an NPS server and not indirectly through other sources which may have changed the data in some way. Although these data have been processed successfully on a computer system at the National Park Service, no warranty, expressed or implied is made regarding the utility of the data on another system or for general scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies to both to individual use of the data and aggregate use with other data.

  4. How can I download or order the data?

Who wrote the metadata?
Dates:
Last modified: 06-Jun-2017

Metadata author:
Stephanie O'Meara
Colorado State University
Research Associate, Geologist/GIS Specialist/Data Manager
1201 Oak Ridge Drive, Suite 200
Fort Collins, Colorado 80525-5589
USA

(970) 491-6655 (voice)
stephanie.omeara@colostate.edu

Hours_of_Service: 9:00 a.m. to 5:00 p.m. (MST), Monday - Friday
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

Generated by mp version 2.7.19 on Wed Jun 07 15:32:09 2017