Geologic contacts in the Elm Creek West Quadrangle, Nebraska (elmcrkwestcontacts_g83.shp)

Metadata also available as

Frequently-anticipated questions:


What does this data set describe?

    Title:
    Geologic contacts in the Elm Creek West Quadrangle, Nebraska (elmcrkwestcontacts_g83.shp)
    Abstract:
    This dataset includes polygons that describe the geologic age and (or) geomorphic position of deposits in the Newark 7.5' quadrangle in central Nebraska.

  1. How should this data set be cited?

    U.S. Geological Survey, Central Energy Resources Team, and Steven M. Condon, USGS, Denver, CO, 2005, Geologic contacts in the Elm Creek West Quadrangle, Nebraska (elmcrkwestcontacts_g83.shp):.

    Online Links:

    • REQUIRED (Use URL after publication)

    This is part of the following larger work.

    Condon, Steven M. , 2005, Geologic studies of the Platte River, south-central Nebraska and adjacent areas-geologic maps, subsurface study, and geologic history: U.S. Geological Survey Professional Paper PP-, U.S. Geological Survey, Denver, Colorado.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -99.500940
    East_Bounding_Coordinate: -99.374363
    North_Bounding_Coordinate: 40.750469
    South_Bounding_Coordinate: 40.624552

  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: Downloadable GIS 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. It contains the following vector data types (SDTS terminology):

      • G-polygon (1276)

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

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000000. Longitudes are given to the nearest 0.000000. Latitude and longitude values are specified in Decimal degrees.

      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?

    elmcrkwestcontacts

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    NAME
    Symbol used on geologic map for map unit (Source: U.S. Geological Survey)

    ValueDefinition
    Alluvial fan depositAlluvial fan deposit
    AlluviumAlluvium
    Dune depositsDune deposits
    Floodplain depositsFloodplain deposits
    LoessLoess
    Terrace 1a depositsTerrace 1a deposits
    Terrace 1b depositsTerrace 1b deposits
    Terrace 2 depositsTerrace 2 deposits
    Terrace 3 depositsTerrace 3 deposits
    Terrace 4 depositsTerrace 4 deposits

    MAP_UNIT
    Full name of geologic unit or geomorphic element (Source: U.S. Geological Survey)

    ValueDefinition
    QafAlluvial fan deposit
    QalAlluvium
    QdDune deposits
    QftFloodplain deposits
    QlLoess
    Qt1aTerrace 1a deposits
    Qt1bTerrace 1b deposits
    Qt2Terrace 2 deposits
    Qt3Terrace 3 deposits
    Qt4Terrace 4 deposits


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?

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

    U.S. Geological Survey, Central Energy Resources Team
    c/o Steven M. Condon
    Geologist
    U.S. Geological Survey, Box 25046, MS 939, Denver Federal Center
    Denver, Colorado 80225
    USA

    303.236.1535 (voice)
    scondon@usgs.gov


Why was the data set created?

To delineate geologic contacts and thematically depict the spatial distribution of geologic units and geomorphic elements in the Newark quadrangle.


How was the data set created?

  1. From what previous works were the data drawn?

    (source 1 of 1)
    Type_of_Source_Media: online
    Source_Scale_Denominator: 24,000

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

    Date: 1999 (process 1 of 3)
    Geologic contacts were determined through field studies in the quadrangle. A series of North-South traverses, spaced approximately one mile apart, were used to locate terrace boundaries north and south of the Platte River.

    Person who carried out this activity:

    Steven M. Condon
    U.S. Geological Survey
    Geologist

    303.236.1535 (voice)
    scondon@usgs.gov

    Date: 2000 (process 2 of 3)
    Base materials consisting of a raster topographic map and a digital orthophotoquad were imported into ArcView 3.2. Contacts of geologic and geomorphic units were drawn on the base materials using field notes as a guide.

    (process 3 of 3)
    Metadata imported.

    Data sources used in this process:

    • D:\platte\Platte\ElmCrkWst\elmcrkwestcontactsg.shp.xml

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


How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

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

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


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

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

    USGS Information Services
    Box 25286 Denver Federal Center
    Denver, Colorado 80225
    USA

    1-888-ASK-USGS (voice)
    303.202.4693 (FAX)
    ask@usgs.gov

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

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    This 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, completeness, or usefulness of any information, apparatus, 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 are used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the U.S. Geological Survey 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 U.S. Geological Survey in the use of these data, software, or related materials.

  4. How can I download or order the data?


Who wrote the metadata?

Dates:
Last modified: 21-Jan-2005
Last Reviewed: 2005

Metadata author:
U.S. Geological Survey, Central Energy Resources Team, Data Management Project
c/o Steven M. Condon
U.S. Geological Survey, Box 25046, MS 939, Denver Federal Center
Denver, Colorado 80225
USA

303.236.1535 (voice)
datamgt@usgs.gov

Contact_Instructions:
For inquiries regarding this document, please include the metadata contact person's name, dataset name, and publication series and number.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)


Generated by mp version 2.7.33 on Mon Feb 07 13:32:49 2005