Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion
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...
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American Association for the Advancement of Science (AAAS)
1992
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Online Access: | http://dx.doi.org/10.1126/science.255.5045.708 https://www.science.org/doi/pdf/10.1126/science.255.5045.708 |
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craaas:10.1126/science.255.5045.708 2024-09-15T18:18:57+00:00 Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion Stewart, Brian W. DePaolo, Donald J. 1992 http://dx.doi.org/10.1126/science.255.5045.708 https://www.science.org/doi/pdf/10.1126/science.255.5045.708 en eng American Association for the Advancement of Science (AAAS) Science volume 255, issue 5045, page 708-711 ISSN 0036-8075 1095-9203 journal-article 1992 craaas https://doi.org/10.1126/science.255.5045.708 2024-08-01T04:00:54Z 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. Article in Journal/Newspaper muskox AAAS Resource Center (American Association for the Advancement of Science) Science 255 5045 708 711 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
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craaas |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Stewart, Brian W. DePaolo, Donald J. |
spellingShingle |
Stewart, Brian W. DePaolo, Donald J. Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion |
author_facet |
Stewart, Brian W. DePaolo, Donald J. |
author_sort |
Stewart, Brian W. |
title |
Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion |
title_short |
Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion |
title_full |
Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion |
title_fullStr |
Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion |
title_full_unstemmed |
Diffusive Isotopic Contamination of Mafic Magma by Coexisting Silicic Liquid in the Muskox Intrusion |
title_sort |
diffusive isotopic contamination of mafic magma by coexisting silicic liquid in the muskox intrusion |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
1992 |
url |
http://dx.doi.org/10.1126/science.255.5045.708 https://www.science.org/doi/pdf/10.1126/science.255.5045.708 |
genre |
muskox |
genre_facet |
muskox |
op_source |
Science volume 255, issue 5045, page 708-711 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.255.5045.708 |
container_title |
Science |
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255 |
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5045 |
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708 |
op_container_end_page |
711 |
_version_ |
1810457040980541440 |