An evaluation of uranium-series dating of fossil echinoids from southern California Pleistocene marine terraces
Marine Geology
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Abstract
Fossil sea urchins (Strongylocentrotus) from Pleistocene marine terraces on the southern California Channel Islands have been dated by the uranium-series method in order to test the suitability of echinoids for dating marine terraces. Results indicate that urchin plates and spines do not behave as closed systems with respect to both uranium and thorium. Calculated ages based on these data do not agree with uranium-series ages (120,000 and 127,000 yrs) obtained previously from corals from the same localities. Thus, fossil sea urchins (Strongylocentrotus) are not considered suitable for uranium-series dating of Pleistocene marine terrace deposits.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | An evaluation of uranium-series dating of fossil echinoids from southern California Pleistocene marine terraces |
| Series title | Marine Geology |
| DOI | 10.1016/0025-3227(85)90141-0 |
| Volume | 69 |
| Issue | 1-2 |
| Year Published | 1985 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Geosciences and Environmental Change Science Center |
| Description | 7 p. |
| First page | 187 |
| Last page | 193 |
| Country | United States |
| State | California |
| Other Geospatial | Channel Islands |
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