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A Hypercube of Deep Sea Drilling Project (DSDP) Marine Geological and Geophysical
Data
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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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A Data Hypercube of the DSDP Legacy Data |
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A Hypercube of Deep Sea Drilling Project (DSDP) Marine Geological and Geophysical
Data |
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doi:10.7289/V5057CV7
NCEI Metadata ID: gov.noaa.ngdc.mgg.geology:G03930
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Archive of Core and Site/Hole Data and Photographs from the Deep Sea Drilling Project
(DSDP) |
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doi:10.7289/V54M92G2
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European Petroleum Survey Group (EPSG) Geodetic Parameter Registry |
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GCMD Data Center Keywords |
Global Change Master Directory (GCMD) Data Center Keywords |
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GCMD Instrument Keywords |
Global Change Master Directory (GCMD) Instrument Keywords |
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GCMD Location Keywords |
Global Change Master Directory (GCMD) Location Keywords |
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GCMD Platform Keywords |
Global Change Master Directory (GCMD) Platform Keywords |
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GCMD Project Keywords |
Global Change Master Directory (GCMD) Project Keywords |
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GCMD Science Keywords |
Global Change Master Directory (GCMD) Science Keywords |
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International DOI Foundation (IDF) |
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Library of Congress Subject Headings |
Library of Congress Subject Headings |
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NCEI Marine Geology Data Archive |
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NOAA National Centers for Environmental Information |
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NOAA/NCEI Marine Geology WAF |
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SeaDataNet Common Vocabularies |
SeaDataNet Common Vocabularies |
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USGS Science Topics |
USGS Science Topics |
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http://id.loc.gov/authorities/subjects |
Library of Congress Subject Headings (LCSH) |
The Library of Congress Subject Headings (LCSH) are part of a Linked Data Service,
actively maintained since 1898 to catalog materials held at the Library of Congress. |
information |
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http://www.epsg-registry.org/ |
European Petroleum Survey Group Geodetic Parameter Dataset |
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations. |
search |
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http://www.seadatanet.org/Standards-Software/Common-Vocabularies |
SeaDataNet Common Vocabularies |
The SeaDataNet Vocabulary Server is populated with lists describing a wide range of
entities relevant to marine metadata and data such as parameters, sea area names,
platform classes, instrument types, and so on. |
information |
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https://data.noaa.gov/metaview/page?xml=NOAA/NESDIS/NGDC/Collection/iso/xml/Marine_Geology.xml&view=getDataView&header=none |
Parent Archive |
Information about the Marine Geology Data Archive at NCEI. |
information |
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https://data.noaa.gov/waf/NOAA/NESDIS/NGDC/MGG/Geology/iso/ |
Marine geology metadata records. |
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search |
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https://doi.org/10.7289/V5057CV7 |
Metadata Landing Page |
How to cite this data set (doi:10.7289/V5057CV7), all access options, and complete
documentation. |
information |
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https://doi.org/10.7289/V54M92G2 |
doi:10.7289/V54M92G2 |
This data set contains related data and information. |
information |
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https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords |
Global Change Master Directory (GCMD) Keywords |
The information provided on this page seeks to define how the GCMD Keywords are structured,
used and accessed. It also provides information on how users can participate in the
further development of the keywords. |
information |
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https://www.ncei.noaa.gov/contact |
NCEI Contact Information |
Information for contacts at NCEI. |
information |
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https://www.ngdc.noaa.gov/mgg/geology/data/g03930/doi_10_7289_v5057cv7.pdf |
Documentation |
PDF file containing information about the database including more technical information,
full documentation, and references. |
information |
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https://www.ngdc.noaa.gov/mgg/geology/data/g03930/doi_10_7289_v5057cv7.tar.gz |
Data files |
Download complete hypercube, all formats, and documentation in a compressed tar file
(tar.gz). |
download |
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https://www2.usgs.gov/science/about/ |
USGS Thesaurus |
The USGS Thesaurus contains thematic terms for categorizing information resources
intended to support finding and understanding scientific information. |
information |
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Latitude |
Distance measured north or south from the equator. Distance north is positive, distance
south is negative. |
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Longitude |
Longitude is measured from the Prime Meridian (which is the north/south line that
runs through Greenwich, England), values measured east are positive and values measured
west are negative. |
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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. |
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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. |
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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]. |
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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). |