Mineral-scale Sr isotope variation in plutonic rocks — a tool for unravelling the evolution of magma systems
Abstract Isotope ratios of elements such as Sr, Nd, Pb and Hf can be used as tracers of magmatic sources and processes. Analytical capabilities have evolved so that isotope ratios can now be analysed in situ , and isotopic tracers can therefore be used within single minerals to track the changing ma...
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Online Access: | http://dx.doi.org/10.1017/s0263593300001504 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0080456800090761 |
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crcambridgeupr:10.1017/s0263593300001504 2024-04-07T07:47:35+00:00 Mineral-scale Sr isotope variation in plutonic rocks — a tool for unravelling the evolution of magma systems Davidson, Jon P. Font, Laura Charlier, Bruce L. A. Frank J. Tepley 2008 http://dx.doi.org/10.1017/s0263593300001504 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0080456800090761 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Transactions of the Royal Society of Edinburgh: Earth Sciences volume 97, issue 4, page 357-367 ISSN 0263-5933 1473-7116 Paleontology Earth and Planetary Sciences (miscellaneous) journal-article 2008 crcambridgeupr https://doi.org/10.1017/s0263593300001504 2024-03-08T00:34:44Z Abstract Isotope ratios of elements such as Sr, Nd, Pb and Hf can be used as tracers of magmatic sources and processes. Analytical capabilities have evolved so that isotope ratios can now be analysed in situ , and isotopic tracers can therefore be used within single minerals to track the changing magmatic environment in which a given mineral grew. This contribution shows that Sr isotope ratios in feldspars that make up plutonic rocks will typically preserve initial isotopic variations, provided precise and accurate age corrections can be applied. Variations in initial isotope ratio can give a core-to-rim record of magmatic evolution and can be used to diagnose open system events such as contamination and magma recharge and mixing. New single grain Sr isotope data are presented from the Dais Intrusion, Antarctica, which reflect an open system origin for the crystals. The crystal cargo appears to be aggregated and assembled during transport and emplacement. This model, as opposed to a magma body crystallising post emplacement, may be more applicable to plutonic rocks in general, and is testable using the in situ isotopic determination methods described here. Article in Journal/Newspaper Antarc* Antarctica Cambridge University Press Dais ENVELOPE(161.267,161.267,-77.550,-77.550) Transactions of the Royal Society of Edinburgh: Earth Sciences 97 4 357 367 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Paleontology Earth and Planetary Sciences (miscellaneous) |
spellingShingle |
Paleontology Earth and Planetary Sciences (miscellaneous) Davidson, Jon P. Font, Laura Charlier, Bruce L. A. Frank J. Tepley Mineral-scale Sr isotope variation in plutonic rocks — a tool for unravelling the evolution of magma systems |
topic_facet |
Paleontology Earth and Planetary Sciences (miscellaneous) |
description |
Abstract Isotope ratios of elements such as Sr, Nd, Pb and Hf can be used as tracers of magmatic sources and processes. Analytical capabilities have evolved so that isotope ratios can now be analysed in situ , and isotopic tracers can therefore be used within single minerals to track the changing magmatic environment in which a given mineral grew. This contribution shows that Sr isotope ratios in feldspars that make up plutonic rocks will typically preserve initial isotopic variations, provided precise and accurate age corrections can be applied. Variations in initial isotope ratio can give a core-to-rim record of magmatic evolution and can be used to diagnose open system events such as contamination and magma recharge and mixing. New single grain Sr isotope data are presented from the Dais Intrusion, Antarctica, which reflect an open system origin for the crystals. The crystal cargo appears to be aggregated and assembled during transport and emplacement. This model, as opposed to a magma body crystallising post emplacement, may be more applicable to plutonic rocks in general, and is testable using the in situ isotopic determination methods described here. |
format |
Article in Journal/Newspaper |
author |
Davidson, Jon P. Font, Laura Charlier, Bruce L. A. Frank J. Tepley |
author_facet |
Davidson, Jon P. Font, Laura Charlier, Bruce L. A. Frank J. Tepley |
author_sort |
Davidson, Jon P. |
title |
Mineral-scale Sr isotope variation in plutonic rocks — a tool for unravelling the evolution of magma systems |
title_short |
Mineral-scale Sr isotope variation in plutonic rocks — a tool for unravelling the evolution of magma systems |
title_full |
Mineral-scale Sr isotope variation in plutonic rocks — a tool for unravelling the evolution of magma systems |
title_fullStr |
Mineral-scale Sr isotope variation in plutonic rocks — a tool for unravelling the evolution of magma systems |
title_full_unstemmed |
Mineral-scale Sr isotope variation in plutonic rocks — a tool for unravelling the evolution of magma systems |
title_sort |
mineral-scale sr isotope variation in plutonic rocks — a tool for unravelling the evolution of magma systems |
publisher |
Cambridge University Press (CUP) |
publishDate |
2008 |
url |
http://dx.doi.org/10.1017/s0263593300001504 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0080456800090761 |
long_lat |
ENVELOPE(161.267,161.267,-77.550,-77.550) |
geographic |
Dais |
geographic_facet |
Dais |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Transactions of the Royal Society of Edinburgh: Earth Sciences volume 97, issue 4, page 357-367 ISSN 0263-5933 1473-7116 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0263593300001504 |
container_title |
Transactions of the Royal Society of Edinburgh: Earth Sciences |
container_volume |
97 |
container_issue |
4 |
container_start_page |
357 |
op_container_end_page |
367 |
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1795674708219265024 |