Mass-spectrometric 230Th-234U-238U dating of the Devils Hole calcite vein
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Abstract
The Devils Hole calcite vein contains a long-term climatic record, but requires accurate chronologic control for its interpretation. Mass-spectrometric U-series ages for samples from core DH-11 yielded 230Th ages with precisions ranging from less than 1,000 years (2σ) for samples younger than ∼140 ka (thousands of years ago) to less than 50,000 years for the oldest samples (∼566 ka). The 234U/238U ages could be determined to a precision of ∼20,000 years for all ages. Calcite accumulated continuously from 566 ka until ∼60 ka at an average rate of 0.7 millimeter per 103 years. The precise agreement between replicate analyses and the concordance of the 230Th/238U and 234U/238U ages for the oldest samples indicate that the DH-11 samples were closed systems and validate the dating technique in general.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Mass-spectrometric 230Th-234U-238U dating of the Devils Hole calcite vein |
| Series title | Science |
| DOI | 10.1126/science.258.5080.284 |
| Volume | 258 |
| Issue | 5080 |
| Year Published | 1992 |
| Language | English |
| Publisher | American Association for the Advancement of Science |
| Description | 4 p. |
| First page | 284 |
| Last page | 287 |
| Country | United States |
| State | Nevada |
| Other Geospatial | Devils Hole |