| Abstract: | Uranium-trend dating is an open-system method for age estimation of Quaternary sediments, using disequilibrium in the 238U234U230Th decay series. The technique has been applied to alluvium, colluvium, loess, till, and marine sediments. In this study we tested the U-trend dating method on calcareous marine terrace deposits from the Palos Verdes Hills and San Nicolas Island, California. Independent age estimates indicate that terraces in these areas range from ???80 ka to greater than 1.0 Ma. Two low terraces on San Nicolas Island yielded U-trend plots that have a clustered array of points and the ages of these deposits are indeterminate or highly suspect. Middle Pleistocene terraces and one early Pleistocene terrace on San Nicolas Island and all terraces on the Palos Verdes Hills gave reasonably linear U-trend plots and estimated ages that are stratigraphically consistent and in agreement with independent age estimates. We conclude that many marine terrace deposits are suitable for U-trend dating, but U-trend plots must be carefully evaluated and U-trend ages should be consistent with independent geologic control. ?? 1989. |
| Genre: | Article |
| ProdID: | 70015333 |
| Citation Author: | Muhs, D. R.; Rosholt, J. N.; Bush, C. A. |
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| Citation End Page: | 34 |
| Citation Issue: | C |
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| Citation Language: | English |
| Citation Larger Work Title: | Quaternary International |
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| Citation Number Of Pages: | 16 |
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| Citation Publisher: | Elsevier |
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| Citation Search Results Text: | The Uranium-trend dating method: Principles and application for southern California marine terrace deposits; 1989; Article; Journal; Quaternary International; Muhs, D. R.; Rosholt, J. N.; Bush, C. A. |
| Citation Start Page: | 19 |
| Citation Volume: | 1 |
| Citation Year: | 1989 |
| Type: | citation/reference |
| Text: | The Uranium-trend dating method: Principles and application for southern California marine terrace deposits; 1989; Article; Journal; Quaternary International; Muhs, D. R.; Rosholt, J. N.; Bush, C. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1016/1040-6182(89)90006-2 |
| Date Other: | Sun, 1 Jan 1989 00:00 -0600 |
| Publisher: | Elsevier |
