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Science 24 September 1971:
Vol. 173. no. 4003, pp. 1235 - 1236
DOI: 10.1126/science.173.4003.1235
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Articles

Ages of Crystalline Rocks from Fra Mauro

Liaquat Husain 1, John F. Sutter 1, and Oliver A. Schaeffer 1

1 Department of Earth and Space Sciences, State University of New York, Stony Brook 11790

Crystallization ages for six rocks from Fra Mauro have been measured by the argon-40-argon-39 method. All six rocks give an age of 3.77 ± 0.15 x 109 years, which is the same as for fragmental rocks from this site. It is concluded that the Imbrium event and the crystallization of a significant portion of the pre-Imbrian basalts were essentially contemporaneous.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Lunar Volcanism: Age of the Glass in the Apollo 17 Orange Soil.
L. Husain, L. Husain, and O. A. Schaeffer (1973)
Science 180, 1358-1360
   Abstract »    PDF »
Argon-40-Argon-39 Dating of Apollo Sample 15555.
E. C. Alexander, E. C. Alexander Jr., P. K. Davis, and R. S. Lewis (1972)
Science 175, 417-419
   Abstract »    PDF »
Age of a Lunar Anorthosite.
L. Husain, L. Husain, O. A. Schaeffer, and J. F. Sutter (1972)
Science 175, 428-430
   Abstract »    PDF »
Moon: Possible Nature of the Body That Produced the Imbrian Basin, from the Composition of Apollo 14 Samples.
R. Ganapathy, R. Ganapathy, J. C. Laul, J. W. Morgan, and E. Anders (1972)
Science 175, 55-59
   Abstract »    PDF »


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