Grove, Timothy L. and Walker, David and Longhi, John and Stolper, Edward and Hays, James F. (1973) Petrology of rock 12002 and origin of picritic basalts at Oceanus Procellarum. In: Proceedings of the Fourth Lunar Science Conference. Pergamon Press , New York, pp. 995-1011. ISBN 9780080229669. https://resolver.caltech.edu/CaltechAUTHORS:20120817-150841734
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Abstract
Rock 12002 is a member of the Apollo 12 picritic basalt suite. Experimental olivine-liquid equilibria combined with petrographic observations indicate that 12002 may represent a primary liquid composition. As shown by high pressure experiments, liquids capable of producing the picritic suite can be generated by the partial melting of an olivine+clinopyroxene lunar interior at a depth of 300 km. The crystallization sequence inferred from petrographic observations has been reproduced experimentally at low pressures. Chemical variations similar to those in natural pyroxenes have been partially reproduced in equilibration experiments and suggest a two-stage cooling history for 12002.
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| Additional Information: | © 1973 Pergamon Press. We have benefited from discussions with M. J. O'Hara and E. Dowty. We thank Jeffrey Warner, F. R. Boyd, and M. J. O'Hara for their careful and constructive critiques of the manuscript. Our electron probe is ably maintained by M. Campot. This study was supported by NASA grants NGR 22-007-175 and NGL 22-007-247 and the Harvard Committee on Experimental Geology and Geophysics. | ||||||||
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| Record Number: | CaltechAUTHORS:20120817-150841734 | ||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20120817-150841734 | ||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||
| ID Code: | 33314 | ||||||||
| Collection: | CaltechAUTHORS | ||||||||
| Deposited By: | Tony Diaz | ||||||||
| Deposited On: | 17 Aug 2012 23:08 | ||||||||
| Last Modified: | 03 Oct 2019 04:08 |
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