In:
Proceedings of the National Academy of Sciences, Proceedings of the National Academy of Sciences, Vol. 83, No. 17 ( 1986-09), p. 6241-6244
Abstract:
The 228 Ra/ 226 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 226 Ra concentrations, is 8 g of basalt altered per kg of seawater per year.
Type of Medium:
Online Resource
ISSN:
0027-8424
,
1091-6490
DOI:
10.1073/pnas.83.17.6241
Language:
English
Publisher:
Proceedings of the National Academy of Sciences
Publication Date:
1986
detail.hit.zdb_id:
209104-5
detail.hit.zdb_id:
1461794-8
SSG:
11
SSG:
12
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