Recursos de colección

Caltech Authors (155.447 recursos)

Repository of works by Caltech published authors.

Group = Caltech Tectonics Observatory. Sumatran Plate Boundary

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  1. Variation of initial 230Th/232Th and limits of high precision U–Th dating of shallow-water corals

    Shen, Chuan-Chou; Li, Kuei-Shu; Sieh, Kerry; Natawidjaja, Danny; Cheng, Hai; Wang, Xianfeng; Edwards, R. Lawrence; Lam, Doan Dinh; Hsieh, Yu-Te; Fan, Tung-Yung; Meltzner, Aron J.; Taylor, Fred W.; Quinn, Terrence M.; Chiang, Hong-Wei; Kilbourne, K. Halimeda
    One hundred eighty U–Th data, including 23 isochrons on 24 pristine modern and Holocene corals and 33 seawater samples, were analyzed using sector-field mass spectrometry to understand the variability of initial 230Th/232Th (230Th/232Th0). This dataset allows us to further assess the accuracy and precision of coral 230Th dating method. By applying quality control, including careful sampling and subsampling protocols and the use of contamination-free storage and workbench spaces, the resulting low procedural blanks give an equivalent uncertainty in age of only ±0.2–0.3 yr for 1–2 g of coral sample. Using site-specific 230Th/232Th0 values or isochron techniques, our study demonstrates that...
    - 28-ago-2017

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