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Dataset Overview | National Centers for Environmental Information (NCEI)

Radiocarbon dating of archived sediment cores in the Southeast Pacific from 1960 to 2000 (NCEI Accession 0291571)

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This dataset contains chemical data collected in the South Pacific Ocean from 1960-01-01 to 2000-01-31. These data include carbon-14 age dating and depth core. The instruments used to collect these data include Accelerator Mass Spectrometer. These data were collected by Mark A. Altabet of University of Massachusetts Dartmouth as part of the "Collaborative Research: Did the SE Pacific Gyre become a Hot Spot for N2 Fixation during Dusty Glacial Conditions? (N2 Fixation Glacial Dust Pacific Gyre)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2023-01-17.

The following is the text of the dataset description provided by BCO-DMO:

Acquisition Description:
This dataset was developed for sediment cores from the SE Pacific that were archived in a variety of repositories. The most promising cores were selected for radiocarbon dating of the planktonic foraminiferal fraction. Sediment handling and processing were similar to Cleaveland and Herbert (2007). Sediment samples of 2 cc size were requested from the core libraries where the target cores have been archived. Upon delivery, they were kept refrigerated. Bulk calcium carbonate for radiocarbon dating was isolated from the greater than 150-millimeter (mm) fraction of wet-sieved bulk sediment and dried prior to analysis.

Samples were sent to the WHOI NOSAMS facility and were prepared according to the methods for carbonate 14 C analysis listed at https://www2.whoi.edu/site/nosams/client-services/submitting_guidelines/sample_processes (see related publications).

Carbonate samples are treated with phosphoric acid to generate CO2 which, in turn, is converted to a graphite target. The target is analyzed for 14 C on an accelerator mass spectrometer (AMS).

Carbonate samples are treated with phosphoric acid while under vacuum. The acidification of the sample material generates carbon dioxide (CO 2 ) which is then converted to graphite. The graphite is pressed into a target to be analyzed for 14 C on an accelerator mass spectrometer (AMS).
  • Cite as: Altabet, Mark A. (2024). Radiocarbon dating of archived sediment cores in the Southeast Pacific from 1960 to 2000 (NCEI Accession 0291571). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0291571. Accessed [date].
gov.noaa.nodc:0291571
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  • TSV
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 1960-01-01 to 2000-01-31
Spatial Bounding Box Coordinates
West: -120.193
East: -73.608
South: -44.55
North: -17
Spatial Coverage Map
General Documentation
Associated Resources
  • Biological, chemical, physical, biogeochemical, ecological, environmental and other data collected from around the world during historical and contemporary periods of biological and chemical oceanographic exploration and research managed and submitted by the Biological and Chemical Oceanography Data Management Office (BCO-DMO)
    • NCEI Collection
      Navigate directly to the URL for data access and direct download.
  • Altabet, M. A. (2023) Radiocarbon dating of archived sediment cores in the Southeast Pacific from 1960 to 2000. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-01-12. https://doi.org/10.26008/1912/bco-dmo.886679.1
    • Parent ID (indicates this dataset is related to other data):
    • gov.noaa.nodc:BCO-DMO
Publication Dates
  • publication: 2024-04-21
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Purpose This dataset is available to the public for a wide variety of uses including scientific research and analysis.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Altabet, Mark A. (2024). Radiocarbon dating of archived sediment cores in the Southeast Pacific from 1960 to 2000 (NCEI Accession 0291571). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0291571. Accessed [date].
Cited Authors
Principal Investigators
Contributors
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Points of Contact
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Acknowledgments
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
BCO-DMO Standard Parameters Global Change Master Directory (GCMD) Science Keywords Originator Parameter Names
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Instrument keywords NODC INSTRUMENT TYPES THESAURUS BCO-DMO Standard Instruments Global Change Master Directory (GCMD) Instrument Keywords Originator Instrument Names
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
Project keywords BCO-DMO Standard Projects Provider Funding Award Information
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Altabet, Mark A. (2024). Radiocarbon dating of archived sediment cores in the Southeast Pacific from 1960 to 2000 (NCEI Accession 0291571). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0291571. Accessed [date].
Data License
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees
  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2024-04-21T17:42:45Z - NCEI Accession 0291571 v1.1 was published.
Output Datasets
Acquisition Information (collection)
Instrument
  • spectrophotometer
Last Modified: 2024-05-31T15:15:28Z
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