Flow rates and reaction rates in the Galapagos Rise spreading center hydrothermal system as inferred from 228 Ra/ 226 Ra in vesicomyid clam shells
- 1 September 1986
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 83 (17), 6241-6244
- https://doi.org/10.1073/pnas.83.17.6241
Abstract
The 228Ra/226Ra ratios in a previously dated vesicomyid clam shell 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.degree. C at the Galapagos Rise Spreading Center. The minimum rate of reaction for the 45-year sojourn time, based on a water/rock ratios of 2.8 derived from 226Ra concentrations, is 8 g of basalt altered per kg of seawater per year.This publication has 3 references indexed in Scilit: