noaa-ocean-20165 eng; USA utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2024-01-22 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Blake Ridge Chemistry, Foraminifera, Stable Isotope and Radiogenic Isotope Data for the last 35,000 Years 2016-05-19 publication doi:10.25921/6z1e-gg46 noaa-ocean-20165 NCEI DSI 1200_02 NCEI DSI 1200_01 Wycech, J. originator Wycech, J. author Kelly, D.C. originator Kelly, D.C. author Marcott, S.A. originator Marcott, S.A. author NOAA National Centers for Environmental Information publisher tableDigital 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 North Atlantic Ocean. The time period coverage is from Unavailable begin date to Unavailable end date in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. 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. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA World Data Service for Paleoclimatology Data Center Contact 828-271-4800 303-497-6513 325 Broadway, E/NE31 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncei.noaa.gov/pub/data/paleo/webimages/pc-default-ocean.png Paleoclimatology - Paleoceanography PNG Earth Science > Paleoclimate > Ocean/Lake Records Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleocean > population abundance earth science > paleoclimate > paleocean > oxygen isotopes earth science > paleoclimate > paleocean > radiogenic isotope earth science > paleoclimate > paleocean > trace metals in carbonates theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian What: weight; Material: Trilobatus sacculifer What: depth at sample end; Material: null What: delta 13C; Material: Globigerinoides ruber|Orbulina universa|Trilobatus sacculifer|carbonate What: magnesium/calcium; Material: Globigerinoides ruber|Orbulina universa|Trilobatus sacculifer What: magnesium/calcium; Material: Globigerinoides ruber|Orbulina universa|Trilobatus sacculifer What: calcium carbonate; Material: sediment What: Trilobatus sacculifer; Material: null What: notes; Material: null What: notes; Material: null What: manganese/calcium; Material: Globigerinoides ruber|Orbulina universa|Trilobatus sacculifer What: Orbulina universa; Material: null What: notes; Material: null What: Globigerinoides ruber; Material: null What: planktic:benthic foraminifer; Material: sediment What: notes; Material: null What: total planktic foraminifers; Material: sediment What: notes; Material: null What: depth at sample start; Material: null What: delta 18O; Material: Trilobatus sacculifer What: notes; Material: null What: manganese/calcium; Material: Globigerinoides ruber|Orbulina universa|Trilobatus sacculifer What: delta 18O; Material: Trilobatus sacculifer What: total benthic foraminifers; Material: sediment theme Paleoenvironmental Standard Terms (PaST) Thesaurus NOAA National Centers for Environmental Information https://www.ncei.noaa.gov/products/paleoclimatology/paleoenvironmental-standard-terms-thesaurus PaST Thesaurus information publisher Ocean > Atlantic Ocean > North Atlantic Ocean > CH15-00-PC9 > LATITUDE 31.9282 > LONGITUDE -75.7296 place DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian otherRestrictions Cite as: Wycech, J.; Kelly, D.C.; Marcott, S.A. (2016-05-19): NOAA/WDS Paleoclimatology - Blake Ridge Chemistry, Foraminifera, Stable Isotope and Radiogenic Isotope Data for the last 35,000 Years. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/6z1e-gg46. Accessed [date]. otherRestrictions 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. otherRestrictions 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 otherRestrictions None otherRestrictions 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. Effects of Seafloor Diagenesis on Planktic Foraminiferal Radiocarbon Ages 2016 publication Wycech, J., Kelly, D.C., and Marcott, S. author Geology publisher https://doi.org/10.1130/G37864.1 HTTPS Web Browser Associated Reference published 2016 Wycech, J., Kelly, D.C., and Marcott, S., 2016: Effects of Seafloor Diagenesis on Planktic Foraminiferal Radiocarbon Ages. Geology, 44, 551-554, 10.1130/G37864.1 information crossReference sciencePaper eng; USA geoscientificInformation Paleo date information not available. -75.7296 -75.7296 31.9282 31.9282 Study Coordinates 31.9282 -75.7296 1950 STUDY NOTES: Radiocarbon chronology, geochemistry, and abundance counts of foraminiferal shells for the upper 270 cm of a piston core from the Blake Ridge Provided Keywords: paleoceanography, radiocarbon, foraminifera, Quaternary, diagenesis ABSTRACT SUPPLIED BY ORIGINATOR: Radiocarbon (14C) ages obtained from planktic foraminiferal calcite are a mainstay for reconstructing ocean-climate change and carbon cycle dynamics of the past 30 thousand years, yet the effects of diagenesis on this vital chronometer are poorly constrained. Here, we address this shortcoming by comparing 14C ages and trace element ratios (Mg/Ca, Mn/Ca) of planktic foraminifera with white, opaque shells deemed well preserved by traditional standards to those with exquisitely preserved translucent shells. Results support a diagenetic mechanism as opaque shells yield 14C ages invariably older and trace element ratios consistently higher than those of translucent shells. Radiocarbon age offsets are particularly pronounced in mono-specific samples taken from stratigraphic horizons proximal to the d18O maximum marking the Last Glacial Maximum (LGM) and the subsequent deglacial. Radiocarbon-based calendar ages of translucent shells from the two intervals are congruent with the established age ranges for these climate events, whereas those of co-occurring opaque shells overestimate the LGM and deglacial by 8,000-15,000 yrs and 14,000-22,000 yrs, respectively. These results demonstrate that the use of translucent foraminifera enhances reproducibility and accuracy of 14C ages by minimizing the deleterious effects of diagenesis. This study serves as a cautionary tale since white, opaque foraminifera are common in pelagic sediments, and 14C ages derived from their ostensibly well-preserved shells can lead to discrepancies in the timing of Quaternary climate events and ocean circulation reconstructions. NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor 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. Contact NCEI for other distribution options and instructions. Native Format(s) https://doi.org/10.25921/6z1e-gg46 HTTPS Landing Page Metadata Landing Page NCEI landing page with general information and links to access the data. information https://www.ncei.noaa.gov/access/paleo-search/study/20165 HTTPS Web Browser NOAA Study Page Study page with data access information. search https://www.ncei.noaa.gov/products/paleoclimatology/paleoceanography HTTPS Information NCEI Paleoceanography Page General information for this data type. information https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/wycech2016/wycech2016-ch15-00-pc9-pl-ben.txt HTTPS Download /contributions_by_author/wycech2016/wycech2016-ch15-00-pc9-pl-ben.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/wycech2016/wycech2016-ch15-00-pc9-forams.txt HTTPS Download /contributions_by_author/wycech2016/wycech2016-ch15-00-pc9-forams.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/wycech2016/wycech2016-ch15-00-pc9-d18o.txt HTTPS Download /contributions_by_author/wycech2016/wycech2016-ch15-00-pc9-d18o.txt Original Data and Full Metadata download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/wycech2016/wycech2016-ch15-00-pc9-chem.txt HTTPS Download /contributions_by_author/wycech2016/wycech2016-ch15-00-pc9-chem.txt Original Data and Full Metadata download asNeeded This ISO metadata record was translated from DIF metadata using dif-9x-to-iso-19115-2.xsl Version: 2022-06-21