NOAA/WDS Paleoclimatology - Kingston, New Mexico Greenland Stadial 20 Speleothem Stable Isotope Data
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 Cave. The data include parameters of speleothems with a geographic location of New Mexico, United States Of America. The time period coverage is from 86095 to 69324 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
Dataset Citation
- Cite as: Polyak, V.J.; Asmerom, Y.; Lachniet, M.S. (2018-01-18): NOAA/WDS Paleoclimatology - Kingston, New Mexico Greenland Stadial 20 Speleothem Stable Isotope Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V5FX77QD. Accessed [date].
- Please refer to Credit tab for full citation information.
Dataset Identifiers
- doi:10.7289/V5FX77QD
- noaa-cave-23330
- NCEI DSI 1200_02
- NCEI DSI 1200_01
ISO 19115-2 Metadata
noaa-cave-23330
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
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: 86095 cal yr BP to 69324 cal yr BP; |
Time Period | -84145 to -67374 |
Spatial Bounding Box Coordinates |
West: -107.7167
East: -107.7167
South: 32.9167
North: 32.9167
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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: Speleothem stable isotope (d13C and d18O) data from speleothem KR1 collected near Kingston, New Mexico, USA, for the interval 86-69 KYrBP. ABSTRACT SUPPLIED BY ORIGINATOR: The characteristics of Greenland ice core stadial 20 (GS-20), the first stadial of Marine Isotope Stage 4 at the onset of the most recent glacial period, have been linked to atmospheric aerosol forcing associated with the massive 74 ka Toba (Indonesia) supereruption. More precise 40Ar/39Ar dates are available for the timing of the Toba supereruption, but while greatly improved, ice core records are not tied to absolute chronologies over this specific time interval to test for synchronicity. Here we show a rapid transition to drought conditions in the southwestern United States from a rise in a moisture-sensitive d13C time series of stalagmite KR1 from southwestern New Mexico (USA) at precisely 74.19 +/- 0.22 ka. The rapid rise in d13C in stalagmite KR1 is synchronous with the Toba supereruption 40Ar/39Ar dates within 2S absolute age error, and shows a distinct peak that started and ended abruptly, and lasted ~1560 yr. The d18O time series follows Northern Hemisphere summer insolation, and the absence of a prominent d18O anomaly at 74 ka suggests that the atmospheric response in the southwestern United States was dominated by moisture and atmospheric CO2, not temperature or moisture source variations. The coincidence of the initiation of southwest aridity at the time of the Toba supereruption is consistent with an interpretation that the eruption caused far-reaching climate change; however, climatic anomalies such as this Greenland stadial would thus likely require long process-time feedback systems related to glacial thresholds to sustain the less than decadal-long volcanic-induced atmospheric interferences. The debate regarding the role of the Toba supereruption as a possible trigger of GS-20 requires robust chronologies to resolve and advance our understanding of the potential climatic triggers and feedbacks related to this event. Our chronology offers an independent tie to the Greenland ice core record and supports the possibility of a Toba supereruption trigger of GS-20. |
Purpose | Records of past temperature, precipitation, and other aspects of climate derived from mineral deposits found in caves. 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. |
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Global Change Master Directory (GCMD) Science Keywords
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Last Modified: 2023-09-01
For questions about the information on this page, please email: ncei.info@noaa.gov
For questions about the information on this page, please email: ncei.info@noaa.gov