Stewart, Brian W. and DePaolo, Donald J. (1992) Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion. Science, 255 (5045). pp. 708-711. ISSN 0036-8075. doi:10.1126/science.255.5045.708. https://resolver.caltech.edu/CaltechAUTHORS:20150123-110745772
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Abstract
Shifts in ^(87)Sr/^(86)Sr and ^(143)Nd/^(144)Nd ratios measured in cumulates from the upper levels of the Muskox mafic intrusion indicate that isotopic and bulk chemical exchange were decoupled across a mafic-silicic liquid interface during crystallization of the intrusion. Modeling of diffusive exchange between liquid layers demonstrates that isotopic compositions of silicate liquids in layered magma chambers may be strongly affected by this process on time scales of 10^3 to 10^4 years. Diffusive contamination can be used to place constraints on the physical processes and time scales of magmatic systems.
| Item Type: | Article | ||||||||||||
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| Additional Information: | © 1992 American Association for the Advancement of Science. 11 October 1991; Accepted 2 December 1991. We thank T. N. Irvine for samples and field assistance. The comments of R. C. Capo, R. B. Hanson, F. M. Richter, F. J. Spera, and an anonymous reviewer improved the manuscript. This work was supported by NSF grants EAR84-15143 and EAR88-04609. | ||||||||||||
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| Issue or Number: | 5045 | ||||||||||||
| DOI: | 10.1126/science.255.5045.708 | ||||||||||||
| Record Number: | CaltechAUTHORS:20150123-110745772 | ||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20150123-110745772 | ||||||||||||
| Official Citation: | STEWART, B. W., & DEPAOLO, D. J. (1992). Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion. Science, 255(5045), 708-711. doi: 10.1126/science.255.5045.708 | ||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
| ID Code: | 54019 | ||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||
| Deposited By: | INVALID USER | ||||||||||||
| Deposited On: | 23 Jan 2015 19:43 | ||||||||||||
| Last Modified: | 10 Nov 2021 20:26 |
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