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Migration of radiogenic strontium during metamorphism

Wasserburg, G. J. and Albee, A. L. and Lanphere, M. A. (1964) Migration of radiogenic strontium during metamorphism. Journal of Geophysical Research, 69 (20). pp. 4395-4401. ISSN 0148-0227. doi:10.1029/JZ069i020p04395.

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Study of the concentration and isotopic composition of strontium and rubidium in hornblende diorite dikes and sills of Precambrian age from the Panamint Mountains of California showed that these rock systems were enriched in radiogenic Sr during a late Mesozoic metamorphism. Enrichments in radiogenic Sr were observed for total-rock samples which yielded apparent ages of up to 34,000 m.y., although there is no obvious petrographic evidence for such metasomatic changes. These results indicate that some caution is necessary in interpreting the Sr isotopic composition of rocks in terms of their original source or in assuming that ‘total rocks’ form closed systems. In general, the initial isotopic Sr composition should be determined, not assumed.

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Wasserburg, G. J.0000-0002-7957-8029
Additional Information:Copyright 1964 by the American Geophysical Union. (Manuscript received April 20, 1964; revised July 2, 1964.) We would like to thank Mr. B. Troxel of the California Bureau of Mines for his very kind efforts in obtaining some samples of diabase. This work was supported by grants from the National Science Foundation and the Atomic Energy Commission. Contribution 1256, Division of Geological Sciences, California Institute of Technology, Pasadena.
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Atomic Energy CommissionUNSPECIFIED
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Caltech Division of Geological Sciences1256
Issue or Number:20
Record Number:CaltechAUTHORS:20141110-110243393
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Official Citation:Wasserburg, G. J., A. L. Albee, and M. A. Lanphere (1964), Migration of radiogenic strontium during metamorphism, J. Geophys. Res., 69(20), 4395–4401, doi:10.1029/JZ069i020p04395.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51502
Deposited By: George Porter
Deposited On:10 Nov 2014 19:12
Last Modified:10 Nov 2021 19:11

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