Human Paleoecology and Isotope Geochemistry Lab > Data
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
A 0-3 ka d18O record from the Santa Barbara Basin, California.
Citation: Kennett and Kennett 2000
A 0-11 ka d18O record from the Santa Barbara Basin, California.
Citation: Kennet et al. 2007
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: