The average concentrations of potassium, rubidium, strontium, thorium, and uranium in oceanic tholeiitic basalt are (in parts per million) K, 1400; Rb, 1.2; Sr, 120; Th, 0.2; and U, 0.1. The ratio Sr87 to Sr86 is about 0.702, that of K to U is 1.4 x 104, and of Th to U is 1.8. These amounts of K, Th, U, and radiogenic Sr87 are less than in other common igneous rocks. The ratios of Th to U and Sr87 to Sr86 suggest that the source region of the oceanic tholeiites was differentiated from the original mantle material some time in the geologic past.
Potassium, rubidium, strontium, thorium, uranium, and the ratio of strontium-87 to strontium-86 in oceanic tholeiitic basalt
Science
By: M. Tatsumoto, C. E. Hedge, and A.E.J. Engel
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Abstract
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Potassium, rubidium, strontium, thorium, uranium, and the ratio of strontium-87 to strontium-86 in oceanic tholeiitic basalt |
| Series title | Science |
| DOI | 10.1126/science.150.3698.886 |
| Volume | 150 |
| Issue | 3698 |
| Year Published | 1965 |
| Language | English |
| Publisher | AAAP |
| Description | 3 p. |
| First page | 886 |
| Last page | 888 |
| Google Analytic Metrics | Metrics page |