Point locations and characteristics of evaporite-related potash deposits

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Frequently anticipated questions:


What does this data set describe?

Title:
Point locations and characteristics of evaporite-related potash deposits
Abstract:
This spatial database of evaporite-related potash deposits and occurrences provides location and descriptive information for 981 deposits and occurrences that are considered useful and (or) significant in assessing potash resources around the world. The database contains location, geologic, and some limited economic data, as well as one or more references for each site.The spatial database was created for use in a geographic information system (GIS) to support a global potash resource assessment by the U.S. Geological Survey. The purpose of this world-wide inventory is to document the geologic occurrence of (1) rocks enriched in water-soluble potassium minerals and (2) naturally-occurring brines enriched in potassium. Potash, as used in this report, refers to potassium-bearing minerals, ores, and processed products. Databases that summarize the distribution of known occurrences and their geologic setting are an integral part of a geologically-based evaluation of undiscovered mineral resources. The distribution of known occurrences allows us to understand the factors which control their distributions and to forecast areas with potential. These deposits and occurrences also serve as analogs for the types of resources that may be present; the size and composition of undiscovered deposits is likely to be similar to those that have been found.
  1. How might this data set be cited?
    U.S. Geological Survey, 2014, Point locations and characteristics of evaporite-related potash deposits: Scientific Investigations Report 2010-5090-S.

    Online Links:

    This is part of the following larger work.

    Orris, G.J., Cocker, M.D., Dunlap, Pamela, Wynn, Jeff, Spanski, G.T., Briggs, D.A., Gass, Leila, Bliss, James D., Bolm, Karen S., Yang, Chao, Lipin, Bruce R., Ludington, Stephen D., Miller, Robert J., and Slowakiewicz, Miroslaw, 2014, Potash -- A global overview of evaporite-related potash resources, including spatial databases of deposits, occurrences, and permissive tracts: U.S. Geological Survey Scientific Investigations Report 2010-5090-S, U.S. Geological Survey, Reston, Virginia.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -120.683300
    East_Bounding_Coordinate: 145.605600
    North_Bounding_Coordinate: 61.818500
    South_Bounding_Coordinate: -38.271373
  3. What does it look like?
    https://mrdata.usgs.gov/potash/sir-2010-5090-s.png (PNG)
    Reduced-size map showing the distribution of point locations worldwide, 49k bytes, (540 x 270 pixels)
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2014
    Currentness_Reference:
    publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: vector digital 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):
      • Entity point (981)
    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 8.983152841195215e-009. Longitudes are given to the nearest 8.983152841195215e-009. Latitude and longitude values are specified in decimal degrees. The horizontal datum used is D WGS 1984.
      The ellipsoid used is WGS 1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    PotashDeps
    Shapefile -- A vector data storage format for storing the location, shape, and attributes of geographic features. A shapefile is stored in a set of related files (.shp, .shx, .dbf, .prj, .xml). (Source: this report)
    FID
    Internal feature number. (Source: Esri) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    ID_NO
    IDENTIFICATION NUMBER -- Unique numeric identifier.
    Range of values
    Minimum:1
    Maximum:1029
    SITE_NAME
    SITE NAME -- Name of site.
    ALT_NAMES
    ALTERNATE NAMES -- Other name(s) for site.
    TYPE_REC
    TYPE of RECORD -- Site type(s), queried where uncertain; multiple descriptive terms may be present (values are comma-delimited).
    ValueDefinition
    areaAreas of mineralization, including geologic deposits, without data on size and grade.
    basinSedimentary or evaporite basin.
    brineBrine.
    depositRestricted to entities with known reserves and (or) resources, including production if the site has produced potash.
    drill holeDrill hole or bore hole.
    grouped mines/occurrencesSeveral smaller mines or occurrences occur within 4 km of each other, smaller mines were merged into larger mines, reserves/resources are reported at the aggregated level, or the literature refers to the aggregated entity.
    lease/concession/permit areaLease, concession, or permit area.
    mineMine.
    mineral occurrenceMineral occurrence.
    structureSalt structure that has reported potash.
    COUNTRY
    COUNTRY -- Country. (Source: United Nations, 2013, Composition of macro geographical (continental) regions, geographical sub-regions, and selected economic and other groupings: U.N. Statistics Division, accessed March 6, 2013, at http://unstats.un.org/unsd/methods/m49/m49regin.htm)
    LATITUDE
    LATITUDE -- Positive number represents latitude north of the equator; negative number represents latitude south of the equator.
    Range of values
    Units:decimal degrees
    LONGITUDE
    LONGITUDE -- Positive number represents longitude east of the Greenwich meridian; negative number represents longitude west of the Greenwich meridian.
    Range of values
    Units:decimal degrees
    BASIN
    BASIN -- Evaporite basin which contains potash mineralization.
    BASIN_TYPE
    BASIN TYPE -- Type of sedimentary basin, queried where uncertain.
    ValueDefinition
    continental closed basinNarrow trough bounded by normal faults marking zone where lithosphere has ruptured under extensional tectonics. Extension terminated prior to plate breakup.
    continental rift basinNarrow trough bounded by normal faults marking zone where lithosphere has ruptured under extensional tectonics. Extension terminated prior to plate breakup.
    convergent basinA basin formed at a convergent margin. May involve continental and oceanic plate collisions.
    foreland basinA linear sedimentary basin in the exterior area of an contractional orogenic belt where deformation occurs without significant metamorphism. Generally formed on continental crust between orogenic belt and craton.
    intracratonic basinA basin formed within the interior region of a continent, as a regional downwarp away from plate boundaries.
    marine rift basinLong narrow trough bounded by normal and listric faults marking zone where lithosphere has ruptured under extensional tectonics. Extension results in plate breakup and oceanic crustal development and seafloor spreading.
    not determinedBasin type could not be identified from the available information.
    otherBasin type is known (but is not continental closed basin, continental rift basin, convergent basin, foreland basin, intracratonic basin, maring rift basin, not determined, polyphasic basin, pull-apart basin, or sabkha).
    polyphasic basinMineralization represents multiple basin types.
    pull-apart basinA topographic depression centered over an extensional bend or extensional step-over of a strike-slip fault.
    sabkhaA supratidal environment of sedimentation, formed under arid to semiarid conditions on restricted coastal lplains just above normal high-tide level (a saline marine marsh) or can be any coastal or interior flat area where in the near surface, saline minerals crystallize through deflation and evaporation processes.
    TRACT_NAME
    TRACT NAME -- Informal name of permissive tract for potash in which site occurs.
    ValueDefinition
    [no entry]No entry indicates site does not occur within a permissive tract.
    DEP_TYPE
    DEPOSIT TYPE -- Potash deposit type(s) most likely to be present, queried where uncertain.
    ValueDefinition
    halokinetic potash-bearing saltSignificantly disturbed by halokinesis; strata-bound potash deposits that have been subjected to halokinesis.
    mixed stratabound potash-bearing salt and halokinetic potash-bearing saltMixed stratabound potash-bearing salt and halokinetic potash-bearing salt, queried where uncertain.
    not determinedInsufficient information available to classify.
    potash-bearing brineNear surface brine-dominated systems enriched in potassium, and, commonly, other commodities.
    stratabound potash-bearing saltEvaporite mineralization in stratabound form; stratabound potash deposits are accumulations of relatively flat-lying and undeformed potassium chloride and potassium sulfate evaporite minerals intimately associated with halite and related basin wide evaporites.
    evaporiteEvaporite (insufficient information available to further classify).
    COMMODS
    COMMODITIES -- Significant commodities present, queried if presence is uncertain; multiple commodities are listed in approximate order of significance (and are delimited by double spaces).
    ValueDefinition
    Bboron
    BRbromine
    BRIbrine
    CAcalcium
    CLchloride
    GYPgypsum
    H2Shydrogen sulfide gas
    HALhalite
    Iiodine
    Kpotash
    LIlithium
    MGmagnesium
    NAsodium
    NACOsodium carbonate (trona)
    NASOsodium sulfate
    NO3nitrate
    Pphosphate
    Ssulfur
    SO4sulfate
    K_MINERALS
    POTASH MINERALS -- Potash minerals and materials known to be present, queried where uncertain; listed in approximate order of abundance or importance. Terms are listed and defined in table 2-2 in the report.
    ValueDefinition
    [no entry]No entry indicates minerals and materials not determined and (or) not known.
    OTHER_MINS
    OTHER MINERALS -- Other mineral(s) of significance or interest, queried where uncertain; listed in approximate order of abundance or importance.
    ValueDefinition
    [no entry]No entry indicates minerals not determined and (or) not known.
    AGE_ERA
    AGE as GEOLOGIC ERA -- Geologic era(s) of potash mineralization; multiple terms are delimited by hyphens. (Source: International Commission on Stratigraphy, 2013, International chronostratigraphic chart: accessed March 6, 2013, at http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf)
    ValueDefinition
    Cenozoic 
    Mesozoic 
    Paleozoic 
    Neoproterozoic 
    unknownGeologic era(s) not known.
    AGE_PERIOD
    AGE as GEOLOGIC PERIOD -- Geologic period(s) of potash mineralization, queried where uncertain; multiple terms are delimited by hyphens. (Source: International Commission on Stratigraphy, 2013, International chronostratigraphic chart: accessed March 6, 2013, at http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf)
    ValueDefinition
    [no entry]No entry indicates geologic period(s) not determined and (or) not known.
    AGE_EPOCH
    AGE as GEOLOGIC EPOCH -- Geologic epoch(s) of potash mineralization, queried where uncertain; multiple terms are delimited by hyphens. (Source: International Commission on Stratigraphy, 2013, International chronostratigraphic chart: accessed March 6, 2013, at http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf)
    ValueDefinition
    [no entry]No entry indicates geologic epoch(s) not determined and (or) not known.
    AGE_STAGE
    AGE as GEOLOGIC STAGE -- Geologic stage(s) of potash mineralization, queried where uncertain; multiple terms are delimited by hyphens. (Source: International Commission on Stratigraphy, 2013, International chronostratigraphic chart: accessed March 6, 2013, at http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf)
    ValueDefinition
    [no entry]No entry indicates geologic stage(s) not determined and (or) not known.
    MAX_AGE
    MAXIMUM GEOLOGIC AGE -- Oldest age of potash mineralization, queried where uncertain; presented as a hyphen-delimited concatenation of geologic era, followed by geologic period, epoch, and stage, where known. (Source: International Commission on Stratigraphy, 2013, International chronostratigraphic chart: accessed March 6, 2013, at http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf)
    MIN_AGE
    MINIMUM GEOLOGIC AGE -- Youngest age of potash mineralization, queried where uncertain; presented as a hyphen-delimited concatenation of geologic era, followed by geologic period, epoch, and stage, where known. (Source: International Commission on Stratigraphy, 2013, International chronostratigraphic chart: accessed March 6, 2013, at http://www.stratigraphy.org/ICSchart/ChronostratChart2013-01.pdf)
    UNIT
    UNIT -- Host rock unit in which potash mineralization occurs, queried where uncertain.
    ValueDefinition
    [no entry]No entry indicates host rock unit(s) not determined and (or) not known.
    LITH
    LITHOLOGY -- Lithology and (or) composition of the host rock and (or) unconsolidated sediment; multiple terms are delimited by commas.
    ValueDefinition
    [no entry]No entry indicates lithology(s) not determined and (or) not known.
    SALT_STR
    SALT STRUCTURE -- Name of salt structure associated with potash site.
    ValueDefinition
    [no entry]No entry indicates salt structure(s) not determined and (or) not known.
    K_THK_M
    POTASH THICKNESS in METERS -- Reported thickness or range in thickness of the potash or potash-bearing sequence(s); values for multiple sequences are delimited by semicolons.
    ValueDefinition
    [no entry]No entry indicates thickness not reported and (or) not known.
    Range of values
    Units:meter
    K_DEPTH_M
    POTASH DEPTH in METERS -- Reported depth to top of potash mineralization; values may represent a range in depth; values for multiple sequences are delimited by semicolons.
    ValueDefinition
    [no entry]No entry indicates depth not reported and (or) not known.
    Range of values
    Units:meters
    AV_K2O_PCT
    AVERAGE GRADE in PERCENT K2O -- Reported average grade or range in grade, in percent K2O, not associated with stated production or reserve information.
    ValueDefinition
    [no entry]No entry indicates grade not reported and (or) not known.
    FIGURES
    FIGURES -- Image(s) portraying one or more geologic aspects of the site, in PDF file; includes name of subfolder.
    ValueDefinition
    [no entry]No entry indicates graphic images for figure(s) not included.
    P_STATUS
    PRODUCTION STATUS -- Production and (or) development status, queried where uncertain; year in parentheses indicates date information was current.
    ValueDefinition
    Active ProductionSite is producing potash.
    NoneSite did not produce potash.
    Not DeterminedProduction of potash at site has not been determined.
    Past ProductionSite produced potash.
    Small Past ProductionSite produced relatively minor amounts of potash.
    Small ProductionSite is producing relatively minor amounts of potash.
    Under DevelopmentSite is currently under development for production for potash.
    P_FIRST_YR
    PRODUCTION FIRST YEAR -- Reported year(s) of first potash production, may include a second value for year mining resumed after a long hiatus, queried where uncertain.
    ValueDefinition
    [no entry]No entry indicates year(s) not determined and (or) not known.
    Range of values
    Units:year
    P_LAST_YR
    PRODUCTION LAST YEAR -- Reported year(s) of last potash production, may include a second value for year mining ceased after a second startup, queried where uncertain.
    ValueDefinition
    [no entry]No entry indicates year(s) not determined and (or) not known.
    Range of values
    Units:year
    COMPANY
    COMPANY -- Name of company(s); year in parentheses indicates the date the information was known to be correct; multiple entries are delimited by semicolons.
    ValueDefinition
    [no entry]No entry indicates company(s) not determined and (or) not known.
    P_ORE_MT
    PRODUCTION of ORE in MILLION METRIC TONS -- Reported production of ore; multiple entries are delimited by semicolons; entries listed by number correspond to the respectively numbered source listed in P_REFS.
    ValueDefinition
    [no entry]No entry indicates production not reported and (or) not known.
    Range of values
    Units:million metric tons
    P_K2O_MT
    PRODUCTION of K2O in MILLION METRIC TONS -- Reported production of contained potash; multiple entries are delimited by semicolons; entries listed by number correspond to the respectively numbered source listed in P_REFS.
    ValueDefinition
    [no entry]No entry indicates production not reported and (or) not known.
    Range of values
    Units:million metric tons
    P_K2O_PCT
    PRODUCTION GRADE in PERCENT K2O -- Grade of reported production of potash, as percent K2O; multiple entries are delimited by semicolons; entries listed by number correspond to the respectively numbered source listed in P_REFS.
    ValueDefinition
    [no entry]No entry indicates production not reported and (or) not known.
    P_REFS
    PRODUCTION REFERENCES -- Abbreviated citation(s) for source reference(s) of production data provided in P_ORE_MT, P_K2O_MT, and P_K2O_PCT; multiple references are delimited by semicolons; references listed by number correspond to the respectively numbered source listed in P_ORE_MT, P_K2O_MT, P_K2O_PCT, and P_YEARS. (Source: Full references are listed in the File Geodatabase Table "Deposits_AllRefs" and in the report.)
    ValueDefinition
    [no entry]No entry indicates production not reported and (or) not known.
    P_YEARS
    PRODUCTION YEARS -- Year(s) or range of years of production data provided in P_ORE_MT, P_K2O_MT, and P_K2O_PCT, queried where uncertain; multiple entries are delimited by semicolons; entries listed by number correspond to the respectively numbered entry listed in P_ORE_MT, P_K2O_MT, P_K2O_PCT, and P_YEARS.
    ValueDefinition
    [no entry]No entry indicates year of production not reported and (or) not known.
    Range of values
    Units:year
    MEAS_INVEN
    MEASURED INVENTORY -- Categorical field for known reserves or resources of ore and (or) potash.
    ValueDefinition
    YesReserves or resources are reported.
    [no entry]No entry indicates reserves or resources not reported and (or) not known.
    RR_ORE_MT
    RESERVES and (or) RESOURCES of ORE in MILLION METRIC TONS -- Reported reserves and (or) resources of ore, in million metric tons; multiple entries are delimited by semicolons; entries listed by number correspond to the respectively numbered source in RR_REFS. Abbreviations are defined in the report (appendix D).
    ValueDefinition
    [no entry]No entry indicates tonnage not reported and (or) not known.
    Range of values
    Units:million metric tons
    RR_K2O_MT
    RESERVES and (or) RESOURCES of K2O in MILLION METRIC TONS -- Reported reserves and (or) resources of contained K2O; multiple entries are delimited by semicolons; entries listed by number correspond to the respectively numbered source in RR_REFS. Abbreviations are defined in the report (appendix D).
    ValueDefinition
    [no entry]No entry indicates tonnage not reported and (or) not known.
    Range of values
    Units:million metric tons
    RR_K2O_PCT
    RESERVES and (or) RESOURCES of K2O in PERCENT -- Grade of reported reserves and (or) resources, in percent K2O; multiple entries are delimited by semicolons; entries listed by number correspond to the respectively numbered source in RR_REFS. Abbreviations are defined in the report (appendix D).
    ValueDefinition
    [no entry]No entry indicates grade not reported and (or) not known.
    RR_REFS
    RESERVES and (or) RESOURCES REFERENCES -- Abbreviated citation(s) for source reference(s) of reserve and (or) resource data provided in RR_ORE_MT, RR_K2O_MT, and RR_K2O_PCT; multiple references are delimited by semicolons; references listed by number correspond to the respectively numbered entries in RR_ORE_MT, RR_K2O_MT, RR_K2O_PCT, and RR_YEARS. (Source: Full references are listed in the File Geodatabase Table "Deposits_AllRefs" and in the report.)
    ValueDefinition
    [no entry]No entry indicates reserves or resources not reported and (or) not known.
    GEOL_NOTES
    Additional geologic information, if any, for site.
    RR_YEARS
    RESERVES and (or) RESOURCES YEARS -- Year(s) of reserve and (or) resource data provided in RR_ORE_MT, RR_K2O_MT, and RR_K2O_PCT; multiple years are delimited by semicolons; years listed by number correspond to the respectively numbered entries in RR_ORE_MT, RR_K2O_MT, RR_K2O_PCT, and RR_REFS.
    ValueDefinition
    [no entry]No entry indicates year(s) not determined and (or) not known.
    MISC_NOTES
    MISCELLANEOUS NOTES -- Additional general information, if any, for site. See appendix D in report for definitions of abbreviations.
    Sh_refs1
    SHORT REFERENCES 1 -- Abbreviated citation(s) for source reference(s) used in compiling the data; multiple citations are delimited by semicolons. [Note: Truncated entries are continued in Sh_refs2 field.] (Source: Full references are listed in the report and in the Excel workbook (PotashDeposits.xlsx).)
    Sh_refs2
    SHORT REFERENCES 2 -- Abbreviated citation(s) for source reference(s) used in compiling the data; multiple citations are delimited by semicolons; continuation of entry in Sh_refs1 field. (Source: Full references are listed in the report and in the Excel workbook (PotashDeposits.xlsx).)

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • U.S. Geological Survey
  2. Who also contributed to the data set?
    Greta J. Orris, Mark D. Cocker, and Jeffrey C. Wynn compiled the raw data into a spreadsheet format; Greta J. Orris designed the data model, standardized the data content, and proofed location information; Pamela Dunlap converted the data from a spreadsheet format to a spatial database, further standardized the data, wrote metadata, and prepared the digital data for publication.
  3. To whom should users address questions about the data?
    U.S. Geological Survey
    Attn: Greta J. Orris
    Research Geologist
    520 N. Park Ave., Ste. 355
    Tucson, Arizona
    USA

    520-670-5583 (voice)
    greta@usgs.gov

Why was the data set created?

Spatial and descriptive data for 981 evaporite-related potash deposits and occurrences around the world are stored in the shapefile "PotashDeps" for use in a geographic information system (GIS).

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 12-Aug-2014 (process 1 of 2)
    Spatial and descriptive data were imported from a Microsoft Excel spreadsheet format into an Esri File Geodatabase feature class of points (vector GIS). Locations were proofed with respect to the item COUNTRY using a shapefile of political boundaries (U.S. Department of State, 2009). Attributes were further standardized and corrected in the feature class attribute table. Attributes were also proofed to make sure that data were not truncated in the conversion process. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Pamela Dunlap
    Geologist
    520 N. Park Ave., Ste. 355
    Tucson, Arizona
    USA

    520-670-5573 (voice)
    pdunlap@usgs.gov
    Date: 12-Aug-2014 (process 2 of 2)
    Creation of original metadata for this publication; subsequent modification by metadata contact occurred later. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Pamela Dunlap
    Geologist
    520 N. Park Ave., Ste. 355
    Tucson, Arizona
    USA

    520-670-5573 (voice)
    pdunlap@usgs.gov
  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:
There are no use limitations for this item. The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply such warranty. Locations for deposits and occurrences were derived from a variety of source maps, the smallest scale of which was about 1:1,000,000; thus, these data should not be used or portrayed at scales larger than 1:1,000,000 (for example, 1:500,000).
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey
    Denver Federal Center, P.O. Box 25286
    Denver, Colorado
    USA

    888-275-8747 (voice)
    infoservices@usgs.gov
  2. What's the catalog number I need to order this data set?
  3. What legal disclaimers am I supposed to read?
    The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply such warranty. Locations for deposits and occurrences were derived from a variety of source maps, the smallest scale of which was about 1:1,000,000; thus, these data should not be used or portrayed at scales larger than 1:1,000,000 (for example, 1:500,000).
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 07-Dec-2016
Metadata author:
Peter N Schweitzer
USGS ER GD
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/sir-2010-5090-s.faq.html>
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