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Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid c...
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| Zeitschriftentitel: | Proceedings of the National Academy of Sciences |
|---|---|
| Personen und Körperschaften: | , |
| In: | Proceedings of the National Academy of Sciences, 83, 1986, 17, S. 6241-6244 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Proceedings of the National Academy of Sciences
|
| Schlagwörter: |
| author_facet |
Turekian, Karl K. Cochran, J. Kirk Turekian, Karl K. Cochran, J. Kirk |
|---|---|
| author |
Turekian, Karl K. Cochran, J. Kirk |
| spellingShingle |
Turekian, Karl K. Cochran, J. Kirk Proceedings of the National Academy of Sciences Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells Multidisciplinary |
| author_sort |
turekian, karl k. |
| spelling |
Turekian, Karl K. Cochran, J. Kirk 0027-8424 1091-6490 Proceedings of the National Academy of Sciences Multidisciplinary http://dx.doi.org/10.1073/pnas.83.17.6241 <jats:p> The <jats:sup>228</jats:sup> Ra/ <jats:sup>226</jats:sup> Ra ratios in a previously dated vesicomyid clam shell were used to determine that seawater was in contact with mid-oceanic-ridge basalt glass for 22-45 years prior to arrival to the surface at 350°C at the Galapagos Rise Spreading Center. The minimum rate of reaction for the 45-year sojourn time, based on a water/rock ratio of 2.8 derived from <jats:sup>226</jats:sup> Ra concentrations, is 8 g of basalt altered per kg of seawater per year. </jats:p> Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from <sup>228</sup> Ra/ <sup>226</sup> Ra in vesicomyid clam shells Proceedings of the National Academy of Sciences |
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| title |
Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_unstemmed |
Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_full |
Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_fullStr |
Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_full_unstemmed |
Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_short |
Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_sort |
flow rates and reaction rates in the galapagos rise spreading center hydrothermal system as inferred from
<sup>228</sup>
ra/
<sup>226</sup>
ra in vesicomyid clam shells |
| topic |
Multidisciplinary |
| url |
http://dx.doi.org/10.1073/pnas.83.17.6241 |
| publishDate |
1986 |
| physical |
6241-6244 |
| description |
<jats:p>
The
<jats:sup>228</jats:sup>
Ra/
<jats:sup>226</jats:sup>
Ra ratios in a previously dated vesicomyid clam shell were used to determine that seawater was in contact with mid-oceanic-ridge basalt glass for 22-45 years prior to arrival to the surface at 350°C at the Galapagos Rise Spreading Center. The minimum rate of reaction for the 45-year sojourn time, based on a water/rock ratio of 2.8 derived from
<jats:sup>226</jats:sup>
Ra concentrations, is 8 g of basalt altered per kg of seawater per year.
</jats:p> |
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| description | <jats:p> The <jats:sup>228</jats:sup> Ra/ <jats:sup>226</jats:sup> Ra ratios in a previously dated vesicomyid clam shell were used to determine that seawater was in contact with mid-oceanic-ridge basalt glass for 22-45 years prior to arrival to the surface at 350°C at the Galapagos Rise Spreading Center. The minimum rate of reaction for the 45-year sojourn time, based on a water/rock ratio of 2.8 derived from <jats:sup>226</jats:sup> Ra concentrations, is 8 g of basalt altered per kg of seawater per year. </jats:p> |
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| spelling | Turekian, Karl K. Cochran, J. Kirk 0027-8424 1091-6490 Proceedings of the National Academy of Sciences Multidisciplinary http://dx.doi.org/10.1073/pnas.83.17.6241 <jats:p> The <jats:sup>228</jats:sup> Ra/ <jats:sup>226</jats:sup> Ra ratios in a previously dated vesicomyid clam shell were used to determine that seawater was in contact with mid-oceanic-ridge basalt glass for 22-45 years prior to arrival to the surface at 350°C at the Galapagos Rise Spreading Center. The minimum rate of reaction for the 45-year sojourn time, based on a water/rock ratio of 2.8 derived from <jats:sup>226</jats:sup> Ra concentrations, is 8 g of basalt altered per kg of seawater per year. </jats:p> Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from <sup>228</sup> Ra/ <sup>226</sup> Ra in vesicomyid clam shells Proceedings of the National Academy of Sciences |
| spellingShingle | Turekian, Karl K., Cochran, J. Kirk, Proceedings of the National Academy of Sciences, Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells, Multidisciplinary |
| title | Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_full | Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_fullStr | Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_full_unstemmed | Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_short | Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| title_sort | flow rates and reaction rates in the galapagos rise spreading center hydrothermal system as inferred from <sup>228</sup> ra/ <sup>226</sup> ra in vesicomyid clam shells |
| title_unstemmed | Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells |
| topic | Multidisciplinary |
| url | http://dx.doi.org/10.1073/pnas.83.17.6241 |