Gopalan, K. ; Wetherill, G. W. (1968) Rubidium-strontium age of hypersthene (L) chondrites Journal of Geophysical Research: Solid Earth, 73 (22). pp. 7133-7136. ISSN 0148-0227
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Official URL: http://www.agu.org/pubs/crossref/1968/JB073i022p07...
Related URL: http://dx.doi.org/10.1029/JB073i022p07133
Abstract
Five normal gray hypersthene chondrite falls were analyzed for Rb, Sr, and Sr isotopic composition. One (Bath Furnace) has such low Rb/Sr and Sr87/Sr86 ratios that it, in conjunction with others, permits determination of an isochron for L-chondrites alone, without resort to the data of any other types of meteorite and attendant assumptions of cogenesis. An age of 4.48 ± 0.14 × 109 years (λ = 1.39 × 10-11 year-1) and initial Sr87/Sr86 ratio of 0.7008 + .001 were measured. Blank corrections were less than 0.2 and 0.1% for Rb and Sr, respectively, in processing about 300 mg of sample.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Geophysical Union. |
| ID Code: | 13536 |
| Deposited On: | 12 Nov 2010 15:23 |
| Last Modified: | 01 Jun 2011 11:54 |
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