noaa-ocean-2500 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 2024-03-11 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Scotian Margin during the last deglaciation 1995-07-01 publication doi:10.25921/ey2h-4j50 noaa-ocean-2500 NCEI DSI 1200_02 NCEI DSI 1200_01 Keigwin, L.D. originator Keigwin, L.D. author Jones, G.A. originator Jones, G.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 24487 to 693 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 > paleocean > age control earth science > paleoclimate > paleocean > lithology earth science > paleoclimate > paleocean > oxygen isotopes 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: delta 18O; Material: Neogloboquadrina pachyderma What: ice rafted debris; Material: null What: calcium carbonate; Material: sediment What: delta 18O; Material: Globigerinoides ruber What: age; Material: null What: depth; Material: null 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 > HU72-021-3 > LATITUDE 42.97 > LONGITUDE -59.92 Ocean > Atlantic Ocean > North Atlantic Ocean > HU73-031-7 > LATITUDE 42.98 > LONGITUDE -55.25 Ocean > Atlantic Ocean > North Atlantic Ocean > V17-179 > LATITUDE 46.52 > LONGITUDE -58.07 Ocean > Atlantic Ocean > North Atlantic Ocean > HU73-011-1 > LATITUDE 43.22 > LONGITUDE -60.42 Ocean > Atlantic Ocean > North Atlantic Ocean > V17-178 > LATITUDE 43.48 > LONGITUDE -54.87 Ocean > Atlantic Ocean > North Atlantic Ocean > HU72-021-7 > LATITUDE 42.35 > LONGITUDE -59.53 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: Keigwin, L.D.; Jones, G.A. (1995-07-01): NOAA/WDS Paleoclimatology - Scotian Margin during the last deglaciation. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.25921/ey2h-4j50. 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. The marine record of deglaciation from the continental margin off Nova Scotia 1995 publication Keigwin, L.D., and G.A. Jones author Paleoceanography publisher https://doi.org/10.1029/95PA02643 HTTPS Web Browser Associated Reference published 1995 Keigwin, L.D., and G.A. Jones, 1995: The marine record of deglaciation from the continental margin off Nova Scotia. Paleoceanography, 10, 973-985, 10.1029/95PA02643 information crossReference sciencePaper eng; USA geoscientificInformation Date Range: 20410 14C yr BP to 740 14C yr BP; Date Range: 24487 cal yr BP to 693 cal yr BP; -60.42 -54.87 42.35 46.52 -22537 1257 ABSTRACT SUPPLIED BY ORIGINATOR: Continental margin sediments off Nova Scotia accumulate at high rates (up to 360 cm kyr−1) and contain a history of millennial-scale environmental changes which are dominated by the proximity of the Laurentide ice sheet during the latest Quaternary. Using stable isotope ratios of oxygen, accelerator mass spectrometer radiocarbon dating, micropaleontology, and sedimentology, we document these changes in six piston cores ranging in water depth from ∼450 to ∼4300 m. We find that maximum δ18O in N. pachyderma occurred about 15 ka and preceded the maximum abundance of this species in these cores by ∼1000 years. Between 13 and 14 ka we find a second peak in abundance of N. pachyderma, minimum δ18O, and two pulses of ice rafting. The sediment lithology supports terrestrial studies which indicate that there was a general withdrawal of ice beyond the upper Paleozoic and Mesozoic red beds by 14 ka in southeastern Canada, so the ice rafting events between 13 and 14 ka probably reflect ice stream activity in the St. Lawrence valley. The Younger Dry as event is recognized as a peak in abundance of N. pachyderma and ice rafting (dated as ∼11.3 ka), but meltwater discharge to the Gulf of St. Lawrence was either too small or occurred over too long a time to leave a distinct δ18O minimum off Nova Scotia. At 7.1 ka, in the middle of Holocene warming, we find a third peak in abundance of N. pachyderma and another δ18O minimum but no ice rafting. We interpret these data as evidence of a late-occurring meltwater event which, if correct, could have originated in the Great Lakes, in the Labrador-Ungava region, or in both. The final millennial-scale phenomenon off Nova Scotia is the onset of “Neoglaciation,” marked by increased ice rafting and increased % N. pachyderma beginning about 5 kyr ago. 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/ey2h-4j50 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/2500 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/paleocean/sediment_files/complete/v17-179-tab.txt HTTPS Download /paleocean/sediment_files/complete/v17-179-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/v17-178-tab.txt HTTPS Download /paleocean/sediment_files/complete/v17-178-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/hu730317-tab.txt HTTPS Download /paleocean/sediment_files/complete/hu730317-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/hu730111-tab.txt HTTPS Download /paleocean/sediment_files/complete/hu730111-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/hu720217-tab.txt HTTPS Download /paleocean/sediment_files/complete/hu720217-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/paleocean/sediment_files/complete/hu720213-tab.txt HTTPS Download /paleocean/sediment_files/complete/hu720213-tab.txt Alternate Format Data download https://www.ncei.noaa.gov/pub/data/paleo/contributions_by_author/keigwin1995 HTTPS Download /contributions_by_author/keigwin1995 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