Rapidly-formed ferromanganese deposit from the eastern Pacific Hess Deep
Nature
By: W. C. Burnett and D. Z. Piper
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Abstract
A thick ferromanganese deposit encrusting fresh basaltic glass has been dredged from the Hess Deep in the eastern Pacific. Contiguous layers within the Fe-Mn crust have been analysed for uranium-series isotopes and metal contents. The rate of accumulation of the deposit, based on the decline of uranium-unsupported 230Th, is calculated to be approximately 50 mm per 106 yr. Based on hydration-rind dating of the underlying glass and an 'exposure age' calculation, this rate is concluded to be too slow, and an accretion rate on the order of 1 mm per 103 yr is more consistent with our data. ?? 1977 Nature Publishing Group.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Rapidly-formed ferromanganese deposit from the eastern Pacific Hess Deep |
| Series title | Nature |
| DOI | 10.1038/265596a0 |
| Volume | 265 |
| Issue | 5595 |
| Year Published | 1977 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Nature |
| First page | 596 |
| Last page | 600 |
| Google Analytic Metrics | Metrics page |