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Dataset Overview | National Centers for Environmental Information (NCEI)

NOAA/WDS Paleoclimatology - Eastern Indian Ocean ODP762 Eocene Calcareous Nannofossil Data

browse graphicPaleoclimatology - Paleoceanography
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Paleoceanography. The data include parameters of paleoceanography with a geographic location of Indian Ocean. The time period coverage is from 55000000 to 35000000 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
  • Cite as: Shamrock, J.L.; Watkins, D.K. (2012-02-23): NOAA/WDS Paleoclimatology - Eastern Indian Ocean ODP762 Eocene Calcareous Nannofossil Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/en7t-7y58. Accessed [date].
  • Please refer to Credit tab for full citation information.
noaa-ocean-12583
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Distributor NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Dataset Point of Contact Data Center Contact
NOAA World Data Service for Paleoclimatology
828-271-4800
paleo@noaa.gov
Coverage Description Date Range: 55000000 cal yr BP to 35000000 cal yr BP;
Time Period -54998050 to -34998050
Spatial Bounding Box Coordinates
West: 112.2539
East: 112.2539
South: -19.8869
North: -19.8869
Spatial Coverage Map
General Documentation
Associated Resources
  • Eocene calcareous nannofossil biostratigraphy and community structure from Exmouth Plateau, Eastern Indian Ocean (ODP Site 762)
Publication Dates
  • publication: 2012-02-23
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
Data Update Frequency Data update frequency not available
Supplemental Information
STUDY NOTES: Raw Eocene calcareous nannofossil abundance data from ODP Leg 122, Site 762, Eastern Indian Ocean. Data are raw nannofossil counts from 184.49-422.00 msbf (Core 3-4-49cm to 29-1-50cm). Assemblage data was collected by first identifying 500 specimens to species level, except members of Pontosphaeraceae and Syracosphaeraceae, which were rare and sporadic through the section. Additionally, two long traverses were examined to identify rare specimens, which were given a value of 1 and added to the total. This data was used to convert all species and genera to percent abundance for further analysis. Detailed site information can be found in Shamrock and Watkins (2012), or from Leg 122 Initial Reports (Haq et al. 1990) and Scientific Results (Rad et al. 1992). The vast majority of original taxonomic references can be found in Perch-Nielsen (1985) and Bown (1998). Samples were supplied by the International Ocean Drilling Program (IODP).
ABSTRACT SUPPLIED BY ORIGINATOR: A relatively complete section of Eocene (~33.9-55.8 Ma) pelagic chalk from offshore northwestern Australia was used to analyze range and abundance data of ~250 Eocene species to test the efficacy of the existing CP (Okada and Bukry 1980) and NP (Martini 1971) biostratigraphic zonation schemes. Changes in nannofossil diversity, abundance, and community structure were monitored through several Eocene paleoenvironmental events, as identified by changes in d13C and d18O data, to examine variations in surface water conditions. Major changes in nannofossil assemblages, as indicated by dominance crossovers, correspond to paleoenvironmental shifts such as the PETM (Paleocene-Eocene thermal maximum) and the EECO (Early Eocene climatic optimum). This research also provides systematic paleontology and range data for one new genus (Hexadelus) and eight new species or variants (Calcidiscus ellipticus, Cruciplacolithus nebulosus, Cruciplacolithus opacus, Cyclicargolithus parvus, Hexadelus archus, Hayella situliformis var. ovata, Markalius latus, Pedinocyclus annulus) and addresses several taxonomic issues in other Eocene species.
Purpose Records of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations.
Dataset Citation
  • Cite as: Shamrock, J.L.; Watkins, D.K. (2012-02-23): NOAA/WDS Paleoclimatology - Eastern Indian Ocean ODP762 Eocene Calcareous Nannofossil Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/en7t-7y58. Accessed [date].
  • Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
Cited Authors
  • Shamrock, J.L.
  • Watkins, D.K.
Originators
  • Shamrock, J.L.
  • Watkins, D.K.
Publishers
  • NOAA National Centers for Environmental Information
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Paleoclimate > Ocean/Lake Records
  • Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records
Global Change Master Directory (GCMD) Science Keywords
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleoceanography
  • earth science > paleoclimate > paleocean > population abundance
Paleoenvironmental Standard Terms (PaST) Thesaurus
  • What: depth; Material: null
  • What: identified coccolithophore; Material: null
  • What: sample identification; Material: null
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Place keywords
  • Ocean > Indian Ocean > ODP 762 > LATITUDE -19.8869 > LONGITUDE 112.2539
Use Constraints
  • Cite as: Shamrock, J.L.; Watkins, D.K. (2012-02-23): NOAA/WDS Paleoclimatology - Eastern Indian Ocean ODP762 Eocene Calcareous Nannofossil Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/en7t-7y58. Accessed [date].
  • 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.
  • Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site.
Access Constraints
  • 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.
  • None
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.
Last Modified: 2024-04-02
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