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South-Central Section - 47th Annual Meeting (4-5 April 2013)

Paper No. 24-5
Presentation Time: 9:35 AM

HOLOCENE CLIMATE VARIABILITY REVEALED BY HIGH-RESOLUTION SPELEOTHEM RECORDS FROM EAST-CENTRAL NORTH AMERICA


BUCKLES, Jessica1, ROWE, Harry2, GAO, Yongli3, SPRINGER, Gregory4, CHENG, Hai5 and EDWARDS, R. Lawrence5, (1)Earth and Environmental Sciences, University of Texas at Arlington, 500 Yates St. Box 19049, Arlington, TX 76019, (2)Bureau of Economic Geology, The University of Texas at Austin, The Jackson School of Geoscience, University Station, Box X, Austin, TX 78713-8924, (3)Geological Sciences, University of Texas at San Antonio, San Antonio, TX 78249, (4)Department of Geological Sciences, Ohio Univ, 316 Clippinger, Athens, OH 45701, (5)Department of Earth Sciences, University of Minnesota, 310 Pillsbury Dr. SE, Minneapolis, MN 55455, buckles@uta.edu

Two speleothems from Harr Cave (HC), located in northeastern West Virginia, grew during the Holocene. Stable isotope carbon and oxygen and high-resolution trace element (Sr) results were obtained and are buttressed by 8 Th-230 age dates.

The Holocene paleoclimate record is dominated by Bond ice-rafting events in the North Atlantic, whose cyclicity may be observed within the HC record. The relationship between the climate ‘thermostat’ of the North Atlantic and the climate signals preserved within these speleothems provides a glimpse into the geochemical response to global climate perturbations as well as to regional variation throughout the Holocene. The HC record will be compared to other Holocene proxy records in an effort to further delineate regional versus global responses to climate events. An understanding of Holocene climate variability is an essential platform on which to interpret modern anthropogenic contributions to climate change.

Handouts
  • Buckles SC GSA 2013 talk final.pdf (3.1 MB)

    • Session No. 24

    T14. Proxy Records of Abrupt Holocene Climate and Environmental Change
    Friday, 5 April 2013: 8:00 AM-12:00 PM
    Classroom 203 (AT&T Center)
    Geological Society of America Abstracts with Programs. Vol. 45, No. 3, p.71
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