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Metadata Identifier: gov.noaa.ngdc.mgg.geology:G03930

Aggregation Info | Bands | Citations | Constraints | Coverage Descriptions | Dimensions | Extents | Formats | Geographic Bounding Box
Georectified Information | Georeferenceable Information | Identifiers | Instruments | Mediums | OnlineResources | Operations
Platforms | Process Steps | Range Elements | Reference Systems | Responsible Parties | Series | Sources | Spatial Grids | Temporal Extents

MD_DataIdentification

Count Component Title Abstract
1 A Hypercube of Deep Sea Drilling Project (DSDP) Marine Geological and Geophysical Data Dr. Christopher Jenkins of the University of Colorado Institute for Arctic and Alpine Research (INSTAAR), produced this data hypercube derived from the prime data (exclusive of G.R.A.P.E. and logging data) of the Deep Sea Drilling Project (DSDP). The Deep-Sea Drilling Project legacy data on the lithologies and physical properties of core recoveries is reprocessed into a uniformly formatted, integrated dataset which can be worked on in a wide range of software applications for query, analysis, mapping and visualization. The goal is to create a dataset which is able to be used efficiently across many science disciplines, especially in the fields of global change, ocean management and earth sciences research. The hypercube data model allows scientists and others to easily comprehend and work with the data layout and content. The integration has employed methods of standardization, linguistic parsing, error trapping, uncertainty analysis, and presentation that have developed and been validated over a decade of use in dbSEABED, for marine ecology, resources, engineering, research and survey. Nevertheless integration of the DSDP dataset has been challenging, not all the DSDP data could be treated successfully.
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SV_Identification

none found
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CI_Citation

Count Component Title Date Citation Identifier
1 A Hypercube of Deep Sea Drilling Project (DSDP) Marine Geological and Geophysical Data
  • 2000-01-01
  • 2000-01-01
doi:10.7289/V5057CV7
1 INFOTERRA Keyword Thesaurus
    1 Jenkins, C., Haxby, W., and W. Ryan. A Data Hypercube of the DSDP Legacy Data. Institute for Arctic and Alpine Research, University of Colorado at Boulder [http://instaar.colorado.edu/~jenkinsc/dbseabed/hypercube/dsdp2ngdc.htm]
      Unresolved Xlinks
      NASA/GCMD Project Keywords at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[1]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]
      NASA/GCMD Science Keywords at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[2]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]
      NASA/GCMD Platform Keywords at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[3]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]
      NASA/GCMD Instrument Keywords at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[4]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]
      NASA/GCMD Data Center Keywords at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[6]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]
      NASA/GCMD Location Keywords at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[7]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]
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      CI_Series

      none found
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      CI_ResponsibleParty

      Count Component Individual Organization Position Email Role Linkage
      1 Christopher Jenkins author
      1 Dr. Christopher Jenkins Institute for Arctic and Alpine Research, University of Colorado originator
      1 Dr. William Haxby Lamont-Doherty Earth Observatory, Columbia University originator
      1 Dr. William Ryan Lamont-Doherty Earth Observatory, Columbia University originator
      1 National Geophysical Data Center, NOAA publisher
      Unresolved Xlinks
      pointOfContact - DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce at: /gmi:MI_Metadata/gmd:contact[1]
      pointOfContact - DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:pointOfContact[1]
      Marine Geology Data Manager - distributor - DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce at: /gmi:MI_Metadata/gmd:distributionInfo[1]/gmd:MD_Distribution[1]/gmd:distributor[1]/gmd:MD_Distributor[1]/gmd:distributorContact[1]
      Carla J. Moore - custodian - DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce at: /gmi:MI_Metadata/gmd:metadataMaintenance[1]/gmd:MD_MaintenanceInformation[1]/gmd:contact[1]
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      CI_OnlineResource

      Count Component Linkage Name Description Function
      1 http://www.ngdc.noaa.gov/mgg/geology/dsdp/hypercube/DSDP_2NGDC_Apr07.zip http://www.ngdc.noaa.gov/mgg/geology/dsdp/hypercube/DSDP_2NGDC_Apr07.zip Download complete hypercube, all formats, as a zip file. download
      1 http://www.ngdc.noaa.gov/mgg/geology/dsdp/hypercube/dsdphypercube.html http://www.ngdc.noaa.gov/mgg/geology/dsdp/hypercube/dsdphypercube.html Web page of information about the database including more technical information, full documentation, references, and links to download data. information
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      MD_Identifier or RS_Identifier

      Count Component Code
      1 doi:10.7289/V5057CV7
      1 various
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      EX_Extent

      Bounding Box Temporal Extent
      Count Component Description West East North South Start End
      1 Global sea floor - sparse locations -178.5 179.7380 76.15000 -77.4420 2000-12-31 2000-12-31
      msl depth in meters at Xpath: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:extent[1]/gmd:EX_Extent[1]/gmd:verticalElement[1]/gmd:EX_VerticalExtent[1]/gmd:verticalCRS[1]
      Unresolved Xlinks
      #boundingExtent at: /gmi:MI_Metadata/gmd:dataQualityInfo[1]/gmd:DQ_DataQuality[1]/gmd:scope[1]/gmd:DQ_Scope[1]/gmd:extent[1]
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      EX_GeographicBoundingBox

      Count Component West East North South
      1 -178.5 179.7380 76.15000 -77.4420
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      EX_TemporalExtent

      Count Component Start End
      1 2000-12-31 2000-12-31
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      MD_Format

      Count Component Name Version specification
      1 ASCII UTF-8 American Standard Code for Information Interchange (ASCII) text format.
      1 KML 2 Keyhole Markup Language (KML)
      1 MS Access unknown Microsoft Access Database Files
      1 Shapefile unknown ArcMAP/ArcSCENE shapefiles, both geographic XYZ and geologic time XYT coordinates
      1 zip unknown compressed file
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      MD_Medium

      none found
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      MD_Constraints

      Count Component Use Limitation
      1 NGDC Copyright Statement Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
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      MD_ReferenceSystem

      Unresolved Xlinks
      European Petroleum Survey Group (EPSG) Geodetic Parameter Registry at: /gmi:MI_Metadata/gmd:referenceSystemInfo[1]
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      MD_GridSpatialRepresentation

      none found
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      MD_Georeferenceable or MI_Georeferenceable

      none found
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      MD_Georectified or MI_Georectified

      none found
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      MD_Dimension

      none found
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      MD_CoverageDescription or MI_CoverageDescription

      Count Component Attribute Description Content Type
      1 Text files in GIS format, ArcMAP/ArcSCENE shapefiles in both goegraphic xyz and geology time xyt coordinates, and KML top-level index files.
      Unresolved Xlinks
      point at: /gmi:MI_Metadata/gmd:contentInfo[1]
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      MD_Band or MI_Band

      Count Component Identifier Descriptor
      1 time coordinate Author description - Geological time in the original DSDP data was given in terms of period, stage, and zone biostratigraphic and chronostratigraphic terms. Only rarely were absolute isotopic or paleomagnetic ages attached to materials. Unfortunately, but inevitably, the geologic time scales in use evolved during DSDP, and on-board age determinations were interim. Lazarus et al. (1995) developed age-depth models for 88 of the drilled holes according to one time scale and those models are refined, extended and served now through Chronos (2007). The revisions of time scales and time terms were not propagated systematically through the DSDP data, though some post-cruise datings were merged in during creation of the CDROM compilation. We have taken the CDROM age determinations such as Early Oligocene and applied the International Stratigraphic Commission (ICS) timescale (Gradstein et al. 2004) to those names. This is a simplistic approach, admittedly, but we look to qualified geochronologists to replace these ages with better calibrated values in the future. The assessed scale of error in the method is of the order of less than 1My (exceptionally up to 4My) to judge from successive revisions of stage absolute ages (Gradstein et al. 2004). The method of parsing the age terms was as follows. Age values are encountered in the CDROM, AGEPROF or PALEO, lines, given usually as a stage name, perhaps with a division like (early). In the dbSEABED dictionary the chronological unit names are assigned absolute values (e.g. entry, rupeln,Rupelian Stage,date,28.4,33.9,0.1, 0.1) of youngest, oldest, youngest uncertainty, oldest uncertainty. The unit is millions of years (my). The parser uses the youngest/oldest limits to create a code like (28.4y:o33.9) (with the uncertainties e.g., 28.4[0.1]y:o33.9[0.1]). An analysed age such as K-Ar dating will appear in EXT (e.g., 0.0023[0.0001]y:o), a biostratigraphic age in PRS. Where an age range is given, such as "upper_oligocene to lower_miocene" the two age ranges are combined, giving in this case the result (15.97t:b28.4). So that data can be plotted to GIS, the code is transferred to a single central value in the preparation of the DSD_...n and Shapefile filesets. So that all samples have a time coordinate, just as they have a geographic coordinate, an age-depth index was built and was used to spread the age values throughout entire the DSD_...n and Shapefile filesets. Undated samples took the age of the sample next above.
      1 vertical coordinate Author description - The vertical datums used during data collection and archiving have been an impediment to creating a global analysable structure from ocean lithologic data. In this project we retain the original values, but the prime vertical coordinate is altitude relative to present sealevel. By using altitudes we keep the proper handedness of the data. Of course, sealevel is an inexact datum, but the variations are unlikely to be an issue except for closed-spaced or re-occupied DSDP holes.
      1 data type/audit code Author description - A feature of dbSEABED outputs is the DataType or Audit Code. In first-level outputs it holds record of the data themes that contribute to an output record, for instance LTH.COL.GTC for lithology, colour, geotechnical. It will be different for extracted and parsed outputs. On merging these, as is done for the ONE and WWD output levels, DataType records whether a parameter is extracted (i.e., analysed, numeric) or parsed (i.e., descriptive, word-based), or specially calculated (estimated). A sequence like PPPxPPxxxxPEEEPExxxPE shows the EXT, PRS, CLC origins of the next 20 parameters, from [Gravel] to [GeolAge].
      1 sample key Author description - We attach a sequential number - Sample Key - to each observed unit, segregation, sample, phase or fraction: in short to each different analysed material. Some samples are subject to many different analyses, and then one key applies to all those analyses. High value is obtained from this because it allows inter-parameter comparisons. When an observation is made at different scales, such as a visual description versus a smear slide, that counts as different material and key. A code for the DSDP Leg, Site, Hole, Core and Section is given for each material (e.g., DSDP:23:310:A:15:6) and can be used in relational databases. Other details on the sectioning and labelling of the core materials is provided by NOAA (2000).
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      MI_RangeElementDescription

      none found
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      MD_AggregateInformation

      Count Component Title Code Association Type Code
      1 Jenkins, C., Haxby, W., and W. Ryan. A Data Hypercube of the DSDP Legacy Data. Institute for Arctic and Alpine Research, University of Colorado at Boulder [http://instaar.colorado.edu/~jenkinsc/dbseabed/hypercube/dsdp2ngdc.htm] crossReference
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      LE_Source or LI_Source

      Count Component Title Date Description
      1 Unknown Dr. Christopher Jenkins
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      LE_ProcessStep or LI_ProcessStep

      Count Component DateTime Description
      1 2000-01-01T00:00:00 Received data from originator
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      MI_Operation

      none found
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      MI_Platform

      Unresolved Xlinks
      SHIPS > SHIPS at: /gmi:MI_Metadata/gmi:acquisitionInformation[1]/gmi:MI_AcquisitionInformation[1]/gmi:platform[1]
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      MI_Instrument

      Count Component Code Type Description
      1 various
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