usSEABED component and features data for the entire U.S. Gulf of Mexico and Caribbean (GMX_CMP, Puerto Rico and U.S. Virgin Islands)

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Frequently anticipated questions:


What does this data set describe?

Title:
usSEABED component and features data for the entire U.S. Gulf of Mexico and Caribbean (GMX_CMP, Puerto Rico and U.S. Virgin Islands)
Abstract:
This component data layer (_CMP.txt) file gives information about selected components (minerals, rock type, microfossils, benthic biota) and seafloor features (bioturbation, structure, ripples) at a given site. Values in the attribute fields represent the membership to that attribute's fuzzy set. For components such as minerals, rocks, micro-biota and plants, and/or epifauna and infauna, corals and other geologic and biologic information, the value depends on sentence structure and other components in description. For features (denoted by an asterisk) such as ripples, ophiuroids, sponges, shrimp, worm tubes, lamination, lumps, grading, and/or bioturbation, the value of the fuzzy set depends on the development of the attribute. Only the relative fuzzy presence of components and features can be determined; the absence of information does not indicate a lack of the attribute, only lack of information about that attribute.
Supplemental_Information:
This layer can be used in a relational data base, using the DataSetKey to link to the GMX_SRC.txt file for brief metadata information and to formal metadata written on each source, and to the other data files of usSEABED using the SiteKey or SampleKey as relational links.
  1. How might this data set be cited?
    U.S. Geological Survey, and Colorado, University of, 2006, usSEABED component and features data for the entire U.S. Gulf of Mexico and Caribbean (GMX_CMP, Puerto Rico and U.S. Virgin Islands): Data Series 146, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Buczkowski, B.J., Reid, J.A., Jenkins, C.J., Reid, J.M., Williams, S.J., and Flocks, J.G., 2006, usSEABED: Gulf of Mexico and Caribbean (Puerto Rico and U.S. Virgin Islands) Offshore Surficial Sediment Data Release: Data Series 146, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -100.000000
    East_Bounding_Coordinate: -64.000000
    North_Bounding_Coordinate: 32.000000
    South_Bounding_Coordinate: 17.000000
  3. What does it look like?
    https://pubs.usgs.gov/ds/2006/146/data/gmx_cmp.jpg (JPEG)
    Image map showing extent of data layer coverage
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2006
    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):
      • Point (29835)
    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 North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.
  7. How does the data set describe geographic features?
    Point
    Sample location (Source: Source reports)
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    LATITUDE
    Latitude coordinate of sample location (Source: USGS) location information in decimal degrees
    LONGITUDE
    Longitude coordinate of sample location (Source: USGS) location information in decimal degrees
    WATERDEPTH
    Water depth; not always tidally correct. (Source: USGS) Information unavailable from original metadata.
    SAMPLETOP
    Measured subbottom depth information for each point sample (top) (Source: USGS) Information unavailable from original metadata.
    SAMPLEBASE
    Meters below seabed surface; Sample bottom as noted in source report. (Source: USGS) Information unavailable from original metadata.
    SITE
    Site name; Survey or laboratory code for the sampling site (Source: USGS) Information unavailable from original metadata.
    DATASETKEY
    Data set key (relational link) (Source: dbSEABED MNEt program) Unique sequential numeric key to SRC file
    SITEKEY
    Site key (relational link) (Source: dbSEABED MNEt program) Unique sequential numeric key to information about the same site in other usSEABED data files
    SAMPLEKEY
    Sample key (relational link) (Source: Source data) Unique sequential numeric key to information about the same sample or subsample in other usSEABED data files
    SAMPLER
    Sampler type as given in source report; recovery (rcvy) or penetration (pen') length appended if given in source report. For more complete information on sampler, see source metadata. (Source: USGS) Information unavailable from original metadata.
    DATATYPE
    Data type (Source: Source data) Source type of data; see table A in the data publication (Larger_Work_Citation).
    QTZ
    Quartz (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    FLD
    Feldspar (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    MICA
    Micas (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    GLAUC
    Glauconite (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    HVY_MIN
    Heavy minerals (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    GBBRO
    Gabbro (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    BASLT
    Basalt (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    CHRT
    Chert (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    DOLMT
    Dolomite (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    PHSPHT
    Phosphate/phosphorite (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    WOOD
    Wood (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    OOL
    Oolite (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    FRM
    Foraminifera (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    BNTH_FRM
    Benthic foraminifera (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    PLNK_FRM
    Planktonic foraminifera (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    PTR
    Pteropod (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    NAN
    Nannofossil (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    DIAT
    Diatom (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    RAD
    Radiolaria (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    CRL
    Coral (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    CRL_DBR
    Coral debris (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    SOL_CRL
    Solitary coral (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    SHL
    Shell (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    SHL_DBR
    Shell debris (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    BRYZ
    Bryozoa (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    BRACH
    Brachiopod (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    ECHND
    Echinoid (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    SND_DOLLR
    Sand Dollar (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    MLSC
    Mollusc (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    BIV
    Bivalve (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    GSTRPD
    Gastropod (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    RZR_CLM
    Razor clam (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    OYST
    Oyster (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    SCLLP
    Scallop (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    CRUSTAC
    Crustacea (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    BRNCL
    Barnacle (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    SRPUL
    Serpulid (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    BURW_F
    Burrow (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:unknown
    Units:unitless
    Resolution:0.1
    HALMDA
    Halimeda (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:100
    Units:unitless
    Resolution:0.1
    SEAGRS_F
    Seagrass (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms)
    Range of values
    Minimum:0
    Maximum:unknown
    Units:unitless
    Resolution:0.1
    SAMPLEPHAS
    Where in sample the data are from; records whether the results are for the whole, bulk sediment, or just to some special part. (Source: dbSEABED thesaurus; see table B in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    CALCT
    calcite (-cement -core -filling -veinlets) (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    K_FLD
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    KAOL
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    SMECT
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    PYRT
    pyrite, marcasite (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    HYDRT
    hydrate, gas hydrate (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    SILCA
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    GYPS
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    ZEOL
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    SULF
    sulfide, chalcopyrite (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    CORALGL
    algal coral, coralgal (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    OSTR
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    OCTCOR
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    MUSL
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    CRINOD
    crinoid, basket star (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    OPHIURD
    ophiuroid, brittle star, ophiomusium (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    C_ALG
    calcareous algae, purple algae, red algae (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    RHODL
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    LRG_FRM
    large foram, foraminferal gravel, amphistegina, heterostegina, macro foraminifera, marginopora (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    COAL
    coal, lignite, bituminous (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    VOLGLS
    volcanic glass, obsidian, hyaloclastite, pyroclastic, quenched, vitric, subvitreous (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    UMAFIC
    ultramafic, amphibolite, anorthosite, dunite, greenstone, harzburgite, lherzolite, norite, orthopyroxenite, periodotite, picrite, pyroxenite, serpentinite, troctolite, wehrlite (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    VOL
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    FE_NOD
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    METLIF
    metalliferous (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    PUMC
    pumice, ash (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    CALC_NOD
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    CLST
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    MICRNOD
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    MN_NOD
    manganese nodule, iron manganese nodule, manganese concretion, micronodule (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    GAS_F
    foamy, gas (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    ODR_F
    odor, anoxic, fetid, foul, fishy, organic, sewage, smell (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    H2S_F
    hydrogen sulfide, hydrogen sulfide -odor -smell, sulfur odor (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    WEED_F
    weed (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    VOID_F
    Information unavailable from original metadata. (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    RIPL_F
    ripple, bedform (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    SCOUR_F
    scour, crag and tail, erosional, lag deposit (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    FCES_F
    feces, coprolite (Source: dbSEABED thesaurus; see table D in the data publication (Larger_Work_Citation) for list of triggering major synonyms) Information unavailable from original metadata.
    Entity_and_Attribute_Overview:
    Values of -99 for any field are indications that there was no data available.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

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
    • University of Colorado
  2. Who also contributed to the data set?
    We thank the following interns for their assistance in data entry, coding, and data testing: Viness Ubert, Emma Mitchell, Emily Denham ,Shea Quinn and Ariadne Prior-Grosch.
  3. To whom should users address questions about the data?
    Jane A. Reid
    U.S. Geological Survey
    Geologist
    400 Natural Bridges Drive
    Santa Cruz, CA
    USA

    841-427-4727 (voice)
    jareid@usgs.gov
    Contact_Instructions: email preferred

Why was the data set created?

The component data file (_CMP.txt) can be used to investigate the relative presence of various constituents and the development and expression of selected seafloor characteristics.

How was the data set created?

  1. From what previous works were the data drawn?
    Varies with source (source 1 of 1)
    Various, unknown, See separate listing, GMX_SRC.txt, and links provided therein, within data publication (see Larger_Work_Citation) for the specific sources and associated metadata.: Various publishers/originators, Various publication places.

    Other_Citation_Details:
    X number of sources, both published and unpublished, are used as the sources of information for usSEABED. Metadata for each source is linked through the usSEABED source file (GMX_SRC.txt). Sources include the U.S. Geological Survey (USGS), the U.S. Army Corps of Engineers (USACE), Minerals Management Service (MMS), National Oceanic and Atmospheric Administration (NOAA), Virginia Institute of Marine Science (VIMS), the Maryland and New Jersey State Geological Surveys (MGS, NJGS), NOAA's National Geophysical Data Center (NGDC), the Smithsonian Institution, and others.
    Type_of_Source_Media: Hard copy and digital
    Source_Contribution:
    Point locations, descriptions, and various analytical data (textural, granulometric, geochemical, geophysical, acoustic) on sediments, rock exposure, and benthos. Varies with source.
  2. How were the data generated, processed, and modified?
    Date: unknown (process 1 of 5)
    Source data may be digitized as necessary (typed or scanned in), with a visual inspection of digitized data to the source report and corrections as necessary, and are tested for completeness in Microsoft Excel as appropriate. Other digital data may be decoded using source-specific programs, downloaded via the web, or sent directly to the USGS or University of Colorado via email. Data are formatted into the dbSEABED Data Entry template (db9_DataEntry.xls, version 08/07/2004) by hand, and tested using the dbSEABED relational database program (RDBi, version 01/05/2006) for correctness of formatting. Data are compiled into source data resource files (DRF) and processed through the dbSEABED data mining program (MNEt, version 04/18/2006) program, using the dbSEABED thesaurus (db9_dct.rtf, version 04/07/2006) and component set up file for U.S. waters (db9_ABUN.txt, version 04/11/2006). Data are iteratively reprocessed and corrected until noted errors are fixed, as recorded by the _RBDS.2fx and _MNE.DGN files. Data are exercised in a GIS for location tests and useability. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Brian J. Buczkowski
    Core Curator and Data Management Specialist
    Woods Hole Science Centers
    Woods Hole, MA
    USA

    (508) 508-548-8700 x2361 (voice)
    bbuczkowski@usgs.gov
    Contact_Instructions: email preferred
    Data sources produced in this process:
    • GMX_CMP.txt
    Date: 26-Jan-2017 (process 2 of 5)
    Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Minor fixes to the attribute format for some attributes were needed. Attempted to modify http to https where appropriate. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 26-Apr-2018 (process 3 of 5)
    Keywords added to metadata support discovery in the USGS Coastal and Marine Geology Data Catalog. Person who carried out this activity:
    U.S. Geological Survey
    Attn: Alan O. Allwardt
    Contractor -- Information Specialist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7551 (voice)
    831-427-4748 (FAX)
    aallwardt@usgs.gov
    Date: 15-Nov-2019 (process 4 of 5)
    Crossref DOI link was added as the first link in the metadata. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 08-Sep-2020 (process 5 of 5)
    Added keywords section with USGS persistent identifier as theme keyword. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@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?
    Accuracy of each attribute is dependent on the accuracy of the original source description and the values calculated by the mining software, dbSEABED. Values are based on filters using fuzzy set theory and represent a measure of truth about the attribute.
  2. How accurate are the geographic locations?
    Locational accuracy is dependent on both the accuracy of the navigational technique and the level of detail about the location as recorded in the individual data sources, and may vary widely (e.g., from 0.005 km (differential GPS) in the more recent surveys to greater than 2 km based on radar, Loran, or dead reckoning in the older surveys. Users of the data should note the metadata written about the original sources and use their own criteria for assessing the accuracy of the locations.
  3. How accurate are the heights or depths?
    Depth determinations, both water depth and subsample depth, are dependent on the accuracy of the depth determination technique and the level of detail noted in the original source. Users of the data should note the metadata written about the original sources and use their own criteria for assessing the accuracy of the locations.
  4. Where are the gaps in the data? What is missing?
    Additional useable data may exist in this area; the authors appreciate any information and leads.
  5. How consistent are the relationships among the observations, including topology?
    Data in the usSEABED data collection are based on the observations and analyses of others, filtered through a unifying and mining software. Each source report varies in type of information/data recorded and format. Only those observations that are recorded can be filtered and mined; only presence (not absences) of information can be noted.

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:
Public domain data from the U.S. Government are freely redistributable with the proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey
    Attn: Brian J. Buczkowski
    Core Curator and Data Management Specialist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2361 (voice)
    (508) 457-2310 (FAX)
    bbuczkowski@usgs.gov
    Contact_Instructions: email preferred
  2. What's the catalog number I need to order this data set? Downloadable Data
  3. What legal disclaimers am I supposed to read?
    Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 08-Sep-2020
Metadata author:
Jane A. Reid
U.S. Geological Survey
Geologist
400 Natural Bridges Drive
Santa Cruz, CA

841-427-4727 (voice)
jareid@usgs.gov
Contact_Instructions: email preferred
Metadata standard:
CSDGM Version 2 (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/data_series/DS-146/gmx_cmp.shp.faq.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:20:13 2021