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Geology and resource assessment of Costa Rica at 1:500,000 scale; a digital representation of maps of the U.S. Geological Survey's 1987 Folio I-1865

Metadata also available as - [Outline] - [Parseable text] - [XML]

Frequently anticipated questions:

What does this data set describe?

Title:
Geology and resource assessment of Costa Rica at 1:500,000 scale; a digital representation of maps of the U.S. Geological Survey's 1987 Folio I-1865
Abstract:
Geologic map at 1:500,000 scale, digitized from USGS I-1865. Includes mines, prospects, and occurrences, permissive tracts for several mineral deposit types, and gravity anomaly contours.
  1. How might this data set be cited?
    Schruben, Paul G., 1997, Geology and resource assessment of Costa Rica at 1:500,000 scale; a digital representation of maps of the U.S. Geological Survey's 1987 Folio I-1865: Digital Data Series DDS-19-R, U.S. Geological Survey, Reston, Virginia.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -85.95
    East_Bounding_Coordinate: -82.55
    North_Bounding_Coordinate: 11.215
    South_Bounding_Coordinate: 8.03
  3. What does it look like?
    https://mrdata.usgs.gov/dds-19/dds-19-large.png (PNG)
    Screen capture image of map interface showing geologic units, faults, and mine sites., (771 x 771 pixels)
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1987
    Currentness_Reference:
    Publication date of the source map.
  5. What is the general form of this data set?
  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 (639)
      • Entity point (348)
      • String (1283)
    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 0.00001. Longitudes are given to the nearest 0.00001. Latitude and longitude values are specified in decimal degrees. The horizontal datum used is World Geodetic System 1984.
      The ellipsoid used is WGS 84.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257.
  7. How does the data set describe geographic features?
    datadxny
    Data dictionary, explaining tables and fields. (Source: USGS)
    id
    Record ID.

    Row identifier within datadxny table. Integer values. Integer of width 4. (Source: this data release)
    Range of values
    Minimum:1
    Maximum:168
    Resolution:1
    tblorder
    Table order.

    Order in which this table should appear in some presentations. Integer values. Integer of width 4. (Source: this data release)
    Range of values
    Minimum:1
    Maximum:14
    Resolution:1
    tblname
    Table name.

    Name of the table. Textual values of no more than 20 characters. (Source: this data release)
    number
    Ordinal position.

    Order in which this field occurs in the RDBMS. Integer values. Integer of width 4. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 14 records have no value for number.
    Range of values
    Minimum:1
    Maximum:56
    Resolution:1
    label
    Field label.

    Label of the field in the RDBMS. Textual values of no more than 32 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 14 records have no value for label.
    category
    Category.

    General category of information provided by the contents of the field. Textual values of no more than 50 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 13 records have no value for category.
    short_desc
    Short description.

    Descriptive name of the field used in some presentations, not constrained by rules affecting the label. Textual values of no more than 40 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 14 records have no value for short_desc.
    description
    Description.

    Longer description of the purpose and contents of the field. Textual values of no more than 4096 characters. (Source: this data release)
    link
    Link.

    URL providing more information about the field. Textual values of no more than 96 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 158 records have no value for link.
    origin
    Origin of field.

    Abbreviation of an organization, data set, or other entity responsible for defining the field. Textual values of no more than 12 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 158 records have no value for origin.
    sqltype
    SQL type.

    Data type of the field as used in the RDBMS. Textual values of no more than 8 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 14 records have no value for sqltype.
    dbftype
    DBF field type.

    Data type of the field when expressed in DBF. Textual values of no more than 1 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 40 records have no value for dbftype.
    width
    Field width.

    Field width when expressed in DBF. Integer values. Integer of width 4. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 110 records have no value for width.
    Range of values
    Minimum:1
    Maximum:4096
    Resolution:1
    prec
    Precision.

    Precision of the field (places to right of decimal) when expressed in DBF, only for numeric fields. Integer values. Integer of width 4. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 150 records have no value for prec.
    Range of values
    Minimum:0
    Maximum:0
    Resolution:1
    units
    Units of measure.

    Units of measure of the field values. Textual values of no more than 64 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 112 records have no value for units.
    nodata
    No data value.

    Special value indicating no data available. Textual values of no more than 16 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 158 records have no value for nodata.
    bouguerl
    Bouguer gravity anomaly contours as lines. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:634
    Resolution:1
    grav_id
    Cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:634
    Resolution:1
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    bouguerp
    Bouguer gravity anomaly contours as polygon features. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:172
    Resolution:1
    grav_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:171
    Resolution:1
    ptype
    Gravity anomaly.

    Bouguer anomaly value, in milligals, of the contour forming the polygon. Integer values. Integer of width 3. (Source: this data release)
    Range of values
    Minimum:-80
    Maximum:120
    Units:mgal
    Resolution:1
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    geol_arc
    Geologic contacts, faults, and caldera boundaries, . (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:3081
    Resolution:1
    geol_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:3081
    Resolution:1
    ftype
    Line type code.

    Number given to differentiate fault types. Integer values. Integer of width 1. (Source: this data release)
    Range of values
    Minimum:0
    Maximum:3
    Resolution:1
    ftext
    Fault type.

    Category of fault: normal, thrust, or caldera (edge?). Textual values of no more than 20 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 2078 records have no value for ftext.
    gtype
    Line type code.

    Number given to differentiate line types other than faults. Integer values. Integer of width 1. (Source: this data release)
    Range of values
    Minimum:0
    Maximum:3
    Resolution:1
    gtext
    Line type.

    Type of line: contact, water, or edge ("end") of the area mapped. Textual values of no more than 20 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 749 records have no value for gtext.
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    geol_poly
    Geologic units. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:516
    Resolution:1
    geol_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:516
    Resolution:1
    ptypei
    Legend item sequence.

    Integer indicating the sequence of a given polygon type in the legend. Integer values. Integer of width 2. (Source: this data release)
    Range of values
    Minimum:1
    Maximum:13
    Resolution:1
    ptype
    Geologic unit symbol.

    Short text symbol typically used to label geologic map units. Textual values of no more than 8 characters. (Source: this data release)
    description
    Geologic unit description.

    Short description of the geologic unit. Textual values of no more than 64 characters. (Source: this data release)
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    isostaticl
    Isostatic gravity anomaly contours as lines. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:387
    Resolution:1
    f_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:994
    Resolution:1
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    isostaticp
    Isostatic gravity anomaly contours as polygons. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:174
    Resolution:1
    gravis_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:174
    Resolution:1
    ptype
    Isostatic anomaly.

    Isostatic gravity anomaly, in milligals, of the contour formed by the polygon. Integer values. Integer of width 3. (Source: this data release)
    Range of values
    Minimum:-60
    Maximum:100
    Units:mgal
    Resolution:1
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    maalt
    Areas of hydrothermal alteration within the Tilarán region. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:13
    Resolution:1
    maalt_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:0
    Maximum:0
    Resolution:1
    ptypei
    (empty field).

    No record contains a value for this field. Textual values of no more than 4 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 13 records have no value for ptypei.
    ptype
    (empty field).

    No record contains a value for this field. Textual values of no more than 64 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 13 records have no value for ptype.
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    mafault
    Geologic faults, dikes, and ground movement arrows within the Tilarán region. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:200
    Resolution:1
    maft_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:200
    Resolution:1
    ftype
    Fault type code.

    Number indicating type of fault symbol. Integer values. Integer of width 1. (Source: this data release)
    Range of values
    Minimum:1
    Maximum:4
    Resolution:1
    description
    Fault type.

    Type of line: fault or mass movement arrow, or dike. Textual values of no more than 64 characters. (Source: this data release)
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    mageolp
    Geologic units within the Tilarán region at 1:100,000 scale. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:123
    Resolution:1
    mage_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:123
    Resolution:1
    ptypei
    Legend sequence.

    Number indicating the sequence of geologic units in the legend. Integer values. Integer of width 2. (Source: this data release)
    Range of values
    Minimum:1
    Maximum:13
    Resolution:1
    ptype
    Geologic unit symbol.

    Short text symbol typically used to label geologic map units. Textual values of no more than 6 characters. (Source: this data release)
    description
    Geologic unit description.

    Short description of the geologic unit. Textual values of no more than 80 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 1 records have no value for description.
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    mapoint
    Mines, prospects, and veins in the Tilarán region. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:28
    Resolution:1
    mapt_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:28
    Resolution:1
    ptype
    Location name.

    Name of the point location, a mine prospect, or vein. Textual values of no more than 64 characters. (Source: this data release)
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    mines
    Mines, prospects, and occurrences in Costa Rica. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:320
    Resolution:1
    mines_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:0
    Maximum:321
    Resolution:1
    code
    Unknown ID.

    Integer identifier of unknown significance. Integer values. Integer of width 4. (Source: this data release)
    Range of values
    Minimum:1
    Maximum:320
    Resolution:1
    overplot
    Unknown modifier.

    A few records have 'Y' in this field, but I do not know what it means. Textual values of no more than 4 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 311 records have no value for overplot.
    recno
    MRDS ID.

    Identifier linking this record with the Mineral Resource Data System. This is the old-style identifier consisting of one or two letters followed by numbers. Textual values of no more than 8 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 1 records have no value for recno.
    site
    Site name.

    Name of the site. Textual values of no more than 64 characters. (Source: this data release)
    commod
    Commodities.

    Commodity abbreviations, typically element symbols written in upper case letters. Textual values of no more than 64 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 1 records have no value for commod.
    dep_type
    Deposit type.

    Short description of the type of mineral deposit at the site. Textual values of no more than 64 characters. (Source: this data release)
    model
    Deposit model.

    Name of the mineral deposit model. Textual values of no more than 64 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 46 records have no value for model.
    model_no
    Deposit model code.

    Code identifying the mineral deposit model, generally a value from Cox and Singer (1986). Textual values of no more than 8 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 46 records have no value for model_no.
    minerals
    Minerals.

    Names or types of minerals reported at the site, a list delimited by commas, semicolons, or both. Textual values of no more than 80 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 128 records have no value for minerals.
    host_rock
    Host rock.

    Lithologic terms describing the rocks hosting the mineral deposit, a list delimited by commas. Textual values of no more than 80 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 120 records have no value for host_rock.
    alteration
    Alteration.

    Terms describing the mineral alteration at or near the site. Textual values of no more than 80 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 260 records have no value for alteration.
    comments
    Comments.

    Descriptive comments about the deposit or site. Textual values of no more than 80 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 135 records have no value for comments.
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)
    tracts
    Permissive tracts defined for several mineral deposit types in Costa Rica. (Source: USGS)
    gid
    Row ID.

    Unique identifier for the row in the database table. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:42
    Resolution:1
    domdis_id
    cover-id.

    Record identifier used as the cover-id value in the original ArcInfo coverage, lacks scientific significance. Integer values. Integer of width . (Source: this data release)
    Range of values
    Minimum:1
    Maximum:42
    Resolution:1
    ptype
    Deposit type code.

    Letter code identifying deposit type of the permissive tract. Textual values of no more than 4 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 17 records have no value for ptype.
    description
    Mineral deposit type.

    Type of mineral deposit that may be found within the tract. Textual values of no more than 64 characters. (Source: this data release)
    ValueDefinition
    (no value)Information not available for this record. 2 records have no value for description.
    geom
    Geometry, LCC.

    Geometry of the feature expressed in meters using the original map projection, Lambert Conformal Conic. USER-DEFINED of width . (Source: this data release)
    wgs84_geom
    Geometry, WGS84.

    Geometry of the feature expressed in decimal degrees WGS84 west longitudes negative. USER-DEFINED of width . (Source: this data release)

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Schruben, Paul G.
  2. Who also contributed to the data set?
    Note that the digitizing of the source material was carried out in the mid 1990s by Paul G. Schruben, then of the USGS.
  3. To whom should users address questions about the data?
    Peter N Schweitzer
    USGS Geology, Energy, and Minerals Science Center
    Geologist
    12201 Sunrise Valley Drive
    Reston, VA
    USA

    703-648-6533 (voice)
    703-648-6252 (FAX)
    pschweitzer@usgs.gov

Why was the data set created?

The original map was intended to provide a generalized mineral resource assessment of the country of Costa Rica. The supporting data would be of appropriate detail to carry out regional analysis of mineral resources and related geological concerns, but would likely be too coarse to answer detailed questions that require locational accuracy within a few kilometers.

Note that the original work was provided in paper form and digitized in the mid-1990s, consequently these data do not include a lot of details about either the geologic units or the mineral occurrences. Many of the mineral occurrences are also listed in the Mineral Resource Data System (MRDS).

This information is no more current than it was when published in 1987, meaning no revisions have occurred and no new information added to these data since that time.

How was the data set created?

  1. From what previous works were the data drawn?
    DDS-19-R (source 1 of 2)
    Schruben, Paul G., 1997, Geology and resource assessment of Costa Rica at 1:500,000 scale; a digital representation of maps of the U.S. Geological Survey's 1987 folio I-1865: Digital Data Series DDS-19-R, U.S. Geological Survey, Reston, Virginia.

    Online Links:

    Type_of_Source_Media: digital
    Source_Scale_Denominator: 500000
    Source_Contribution:
    The scientific content of this work forms the entirety of the information presented here.
    i1865 (source 2 of 2)
    U.S. Geological Survey, Dirección General de Geología, Minas e Hidrocarburos, and Costa, Universidad de Rica, 1987, Mineral Resource Assessment of the Republic of Costa Rica: U.S. Geological Survey Miscellaneous Investigations Series Map i-1865, U.S. Geological Survey, Reston, Virginia.

    Online Links:

    Other_Citation_Details:
    Prepared in cooperation with Los Alamos National Laboratory with funding provided by U.S. Agency for International Development
    Type_of_Source_Media: paper (scanned)
    Source_Scale_Denominator: 500000
    Source_Contribution: Original source material digitized for DDS-19
  2. How were the data generated, processed, and modified?
    Date: Oct-2016 (process 1 of 1)
    Conversion of data from DDS-19 (ArcInfo 6 coverages) to workspaces compatible with ArcGIS 10 and exported data as shapefiles, ingested the shapefiles into PostgreSQL+PostGIS for presentation through map intefaces and data services on MRData.usgs.gov. Person who carried out this activity:
    Peter N Schweitzer
    Midwest Region
    Geologist
    U.S. Geological Survey
    National Center Mail Stop 954
    12201 Sunrise Valley Dr
    Reston, VA
    USA

    703-648-6533 (voice)
    703-648-6252 (FAX)
    pschweitzer@usgs.gov
  3. What similar or related data should the user be aware of?
    Schweitzer, Peter N., 2016, (Complete metadata record).

    Online Links:

    Other_Citation_Details: XML format

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?
    DDS-19 included geochemical analysis of samples from the Tilaran region. However these data contained a number of confusing and duplicative features, and the proper repository for such observations would be the National Geochemical Database. Accordingly the geochemistry table in DDS-19 has been omitted from this collection.
  5. How consistent are the relationships among the observations, including topology?
    Geospatial data here consist of geologic units, faults, and mineral occurrences at 1:500,000 scale and a similar collection of data at the more detailed 1:100,000 scale for the Tilaran region only. These data of different scale are stored in separate database tables.

    Potential users should note that the current conversion of these data did not include correction or update of the basic information.

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)
    Peter N Schweitzer
    USGS Geology, Energy, and Minerals Science Center
    Geologist
    12201 Sunrise Valley Drive
    Reston, VA
    USA

    703-648-6533 (voice)
    703-648-6252 (FAX)
    pschweitzer@usgs.gov
  2. What's the catalog number I need to order this data set? USGS Digital Data Series DDS-19
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 30-Dec-2020
Metadata author:
Peter N Schweitzer
USGS Geology, Energy, and Minerals Science Center
Geologist
12201 Sunrise Valley Drive
Reston, VA
USA

703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://mrdata.usgs.gov/metadata/dds-19.faq.html>
Generated by mp version 2.9.50 on Wed Dec 30 15:39:49 2020