Human Paleoecology and Isotope Geochemistry Lab > Data


Paleoclimate Datasets

ODP 893 d18O Data with Updated Age Model, 0-3 ka

Posted August 4, 2015

A 0-3 ka d18O record from the Santa Barbara Basin, California. Age-depth model updated from Kennett and Kennett 2000 (update by B. Culleton).

Citation: Kennett et al. 2013

Kennett, D.J., P.M. Lambert, J.R. Johnson, and B.J. Culleton
2013 Sociopolitical Effects of Bow and Arrow Technology in Prehistoric Coastal California. Evolutionary Anthropology 22(3):124-132.

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ODP 893 d18O Data, 0-3 ka

Posted August 4, 2015

A 0-3 ka d18O record from the Santa Barbara Basin, California.

Citation: Kennett and Kennett 2000

Kennett, D.J., and J.P. Kennett
2000 Competitive and Cooperative Responses to Climatic Instability in Coastal Southern California. American Antiquity 65(2):379-395.

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ODP 893 d18O Data, 0-11 ka

Posted August 4, 2015

A 0-11 ka d18O record from the Santa Barbara Basin, California.

Citation: Kennet et al. 2007

Kennett, D.J., J.P. Kennett, J.M. Erlandson, K.G. Cannariato
2007 Human responses to Middle Holocene climate change on California's Channel Islands. Quaternary Science Reviews 26:351-367.

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Yok Balum Cave, Belize 2000 Year Stalagmite Stable Isotope Data

Posted August 4, 2015

The YOK-I stalagmite was collected in June 2006 approximately 50 m from the eastern cave entrance. Carbonate was actively precipitating on the tip of this 606.9-mm-long stalagmite when it was harvested. Forty 230Th dates constrain the age of incremental growth in the upper 444.3 mm of YOK-I (Table S2). XRD analysis indicates that the carbonate in the upper 415 mm is pure aragonite and not affected by secondary alteration. The stable isotope climate record presented here therefore comes from the upper 415 mm, while the lower stalagmite section is less suitable for stable isotope studies and was not included in this investigation. Over 4,200 d18O and d13C measurements were performed on the upper 415 mm of the YOK-I stalagmite dated between 40 BC and AD 2006. These samples were continuously milled at 0.1 mm increments and, depending on growth rate changes in YOK-I, the temporal resolution of the isotopic data fluctuates from 0.01 and 3.68 yrs/0.1 mm with an average resolution of 0.49 yrs/0.1 mm. The available data indicate that fluctuations in rainfall intensity are reflected in the d18O record.

Citation: Kennett et al. 2012:

Kennett, D.J., S.F.M. Breitenbach, V.V. Aquino, Y. Asmerom, J. Awe, J.U.L. Baldini, P. Bartlein, B.J. Culleton, C. Ebert, C. Jazwa, M.J. Macri, N. Marwan, V. Polyak, K.M. Prufer, H.E. Ridley, H. Sodemann, B. Winterhalder, and G.H. Haug.
2012 Development and Disintegration of Maya Political Systems in Response to Climate Change. Science 338:788-791.

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