noaa-lake-5467 Crawford Lake and Twiss Marl Pond 13,000 Year Stable Isotope Data Yu, Z. Crawford Lake and Twiss Marl Pond 13,000 Year Stable Isotope Data 1999-02-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/5467 Investigator Z. Yu earth science paleoclimate paleolimnology delta 18O,gastropod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,Valvata sincera earth science paleoclimate paleolimnology depth,null,null,centimeter,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 18O,carbonate,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,charophyte encrustation earth science paleoclimate paleolimnology delta 13C,carbonate,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology delta 13C,carbonate,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,charophyte encrustation earth science paleoclimate paleolimnology age,null,null,radiocarbon year before present,null,paleolimnology,null,null,N,null earth science paleoclimate paleolimnology delta 13C,gastropod,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,Valvata sincera earth science paleoclimate paleolimnology delta 18O,carbonate,null,per mil VPDB,null,paleolimnology,null,isotope ratio mass spectrometry,N,null earth science paleoclimate paleolimnology oxygen isotopes earth science paleoclimate paleolimnology age control earth science paleoclimate paleolimnology lake level geoscientificInformation 12660 cal yr BP -48 cal yr BP Complete 43.46667 43.46667 -79.95 -79.95 Continent North America Canada Crawford Lake>LATITUDE 43.46667>LONGITUDE -79.95 None 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. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Yu, Z.. 1998. Abrupt climate oscillations during the last deglaciation in central North America. Science Vol. 282, Issue no. 5397, pp. 2235-2238, 18 December 1998

Evidence from stable isotopes and a variety of proxies from two Ontario lakes demonstrate that many of the late glacial-to-early Holocene events that are well known from the North Atlantic seaboard, such as the Gerzensee-Killarney Oscillation (also known as the Intra-Allerød Cold Period), Younger Dryas, and Preboreal Oscillation, also occurred in central North America. These results thus imply that climatic forcing acted in the same manner in both regions and that atmospheric circulation played an important role in the propagation of these events. STUDY NOTES: Stable isotope measurements on various authigenic carbonates from three cores (DC, SC, and BC) at Crawford Lake and one core from Twiss Marl Pond, southern Ontario, Canada. Both sites are on top of the Niagara Escarpment, surrounded by dolomite bedrock cliffs and thin glacial deposits.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/ontario/crawfordlake/twisspond_isotopes.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/ontario/twisspond/readme_yu1998.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/paleolimnology/ontario/crawfordlake/crawfordlake_isotopes.txt USA/NOAA DIF Version 9.8.4 2018-12-11 2018-12-11