Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland
High-precision electron microprobe data for major and trace elements (nickel, calcium and manganese) in the margins and rims of groundmass olivine grains from the Majuagaa kimberlite (sensu stricto) in southern West Greenland are presented. Despite a range of olivine core compositions defining sever...
Published in: | Journal of Petrology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Oxford Journals, Oxford University Press
2013
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Online Access: | http://eprints.esc.cam.ac.uk/2760/ http://eprints.esc.cam.ac.uk/2760/1/Pilbeam_et_al._-_2013_-_Digestion_Fractional_Crystallization_%28DFC%29_an_Imp.pdf http://eprints.esc.cam.ac.uk/2760/2/F1.medium.gif http://eprints.esc.cam.ac.uk/2760/3/OlivineEMPanalyses.xlsx http://eprints.esc.cam.ac.uk/2760/4/olivine-grain-crystallisation.xlsm http://eprints.esc.cam.ac.uk/2760/5/olivine-grain-diffusion.xlsm http://eprints.esc.cam.ac.uk/2760/6/OxideEMPanalyses.xlsx http://petrology.oxfordjournals.org/content/early/2013/03/29/petrology.egt016 https://doi.org/10.1093/petrology/egt016 |
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ftucambridgeesc:oai:eprints.esc.cam.ac.uk:2760 2023-05-15T16:27:01+02:00 Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland Pilbeam, L. H. Nielsen, T. F. D. Waight, T. E. 2013-04-02 application/pdf image/gif application/vnd.ms-excel http://eprints.esc.cam.ac.uk/2760/ http://eprints.esc.cam.ac.uk/2760/1/Pilbeam_et_al._-_2013_-_Digestion_Fractional_Crystallization_%28DFC%29_an_Imp.pdf http://eprints.esc.cam.ac.uk/2760/2/F1.medium.gif http://eprints.esc.cam.ac.uk/2760/3/OlivineEMPanalyses.xlsx http://eprints.esc.cam.ac.uk/2760/4/olivine-grain-crystallisation.xlsm http://eprints.esc.cam.ac.uk/2760/5/olivine-grain-diffusion.xlsm http://eprints.esc.cam.ac.uk/2760/6/OxideEMPanalyses.xlsx http://petrology.oxfordjournals.org/content/early/2013/03/29/petrology.egt016 https://doi.org/10.1093/petrology/egt016 en eng Oxford Journals, Oxford University Press http://eprints.esc.cam.ac.uk/2760/1/Pilbeam_et_al._-_2013_-_Digestion_Fractional_Crystallization_%28DFC%29_an_Imp.pdf http://eprints.esc.cam.ac.uk/2760/2/F1.medium.gif http://eprints.esc.cam.ac.uk/2760/3/OlivineEMPanalyses.xlsx http://eprints.esc.cam.ac.uk/2760/4/olivine-grain-crystallisation.xlsm http://eprints.esc.cam.ac.uk/2760/5/olivine-grain-diffusion.xlsm http://eprints.esc.cam.ac.uk/2760/6/OxideEMPanalyses.xlsx Pilbeam, L. H. and Nielsen, T. F. D. and Waight, T. E. (2013) Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland. Journal of Petrology, 54 (7). pp. 1399-1425. ISSN Print ISSN 0022-3530 - Online ISSN 1460-2415 DOI https://doi.org/10.1093/petrology/egt016 <https://doi.org/10.1093/petrology/egt016> 05 - Petrology - Igneous Metamorphic and Volcanic Studies Article PeerReviewed 2013 ftucambridgeesc https://doi.org/10.1093/petrology/egt016 2020-08-27T18:09:24Z High-precision electron microprobe data for major and trace elements (nickel, calcium and manganese) in the margins and rims of groundmass olivine grains from the Majuagaa kimberlite (sensu stricto) in southern West Greenland are presented. Despite a range of olivine core compositions defining several zoning types most of the olivine grains have similar margins. The olivine cores are considered to be xenocrysts in the kimberlite magma whereas the margins represent cognate olivine crystallized from the kimberlite melt itself. We evaluate models of olivine margin formation by fractional crystallization, fractional crystallization with simultaneous digestion of xenoliths, and diffusion. Only fractional crystallization coupled with digestion of xenocrysts (primarily orthopyroxene), with subsequent minor diffusion, can account for the observed compositional profiles in the olivine margins. We propose that the digestion crystallization process, whereby the entrained xenolithic material reacts with the kimberlite melt, is important in the evolution of kimberlite magmas. We suggest that this type of reaction gives a distinct local flavour to the parental kimberlite melt and can account for the similarities and differences between the various kimberlitic (sensu lato) magma types present in southern West Greenland and worldwide. Article in Journal/Newspaper Greenland University of Cambridge, Department of Earth Sciences: ESC Publications Greenland Journal of Petrology 54 7 1399 1425 |
institution |
Open Polar |
collection |
University of Cambridge, Department of Earth Sciences: ESC Publications |
op_collection_id |
ftucambridgeesc |
language |
English |
topic |
05 - Petrology - Igneous Metamorphic and Volcanic Studies |
spellingShingle |
05 - Petrology - Igneous Metamorphic and Volcanic Studies Pilbeam, L. H. Nielsen, T. F. D. Waight, T. E. Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland |
topic_facet |
05 - Petrology - Igneous Metamorphic and Volcanic Studies |
description |
High-precision electron microprobe data for major and trace elements (nickel, calcium and manganese) in the margins and rims of groundmass olivine grains from the Majuagaa kimberlite (sensu stricto) in southern West Greenland are presented. Despite a range of olivine core compositions defining several zoning types most of the olivine grains have similar margins. The olivine cores are considered to be xenocrysts in the kimberlite magma whereas the margins represent cognate olivine crystallized from the kimberlite melt itself. We evaluate models of olivine margin formation by fractional crystallization, fractional crystallization with simultaneous digestion of xenoliths, and diffusion. Only fractional crystallization coupled with digestion of xenocrysts (primarily orthopyroxene), with subsequent minor diffusion, can account for the observed compositional profiles in the olivine margins. We propose that the digestion crystallization process, whereby the entrained xenolithic material reacts with the kimberlite melt, is important in the evolution of kimberlite magmas. We suggest that this type of reaction gives a distinct local flavour to the parental kimberlite melt and can account for the similarities and differences between the various kimberlitic (sensu lato) magma types present in southern West Greenland and worldwide. |
format |
Article in Journal/Newspaper |
author |
Pilbeam, L. H. Nielsen, T. F. D. Waight, T. E. |
author_facet |
Pilbeam, L. H. Nielsen, T. F. D. Waight, T. E. |
author_sort |
Pilbeam, L. H. |
title |
Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland |
title_short |
Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland |
title_full |
Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland |
title_fullStr |
Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland |
title_full_unstemmed |
Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland |
title_sort |
digestion fractional crystallization (dfc): an important process in the genesis of kimberlites. evidence from olivine in the majuagaa kimberlite, southern west greenland |
publisher |
Oxford Journals, Oxford University Press |
publishDate |
2013 |
url |
http://eprints.esc.cam.ac.uk/2760/ http://eprints.esc.cam.ac.uk/2760/1/Pilbeam_et_al._-_2013_-_Digestion_Fractional_Crystallization_%28DFC%29_an_Imp.pdf http://eprints.esc.cam.ac.uk/2760/2/F1.medium.gif http://eprints.esc.cam.ac.uk/2760/3/OlivineEMPanalyses.xlsx http://eprints.esc.cam.ac.uk/2760/4/olivine-grain-crystallisation.xlsm http://eprints.esc.cam.ac.uk/2760/5/olivine-grain-diffusion.xlsm http://eprints.esc.cam.ac.uk/2760/6/OxideEMPanalyses.xlsx http://petrology.oxfordjournals.org/content/early/2013/03/29/petrology.egt016 https://doi.org/10.1093/petrology/egt016 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
op_relation |
http://eprints.esc.cam.ac.uk/2760/1/Pilbeam_et_al._-_2013_-_Digestion_Fractional_Crystallization_%28DFC%29_an_Imp.pdf http://eprints.esc.cam.ac.uk/2760/2/F1.medium.gif http://eprints.esc.cam.ac.uk/2760/3/OlivineEMPanalyses.xlsx http://eprints.esc.cam.ac.uk/2760/4/olivine-grain-crystallisation.xlsm http://eprints.esc.cam.ac.uk/2760/5/olivine-grain-diffusion.xlsm http://eprints.esc.cam.ac.uk/2760/6/OxideEMPanalyses.xlsx Pilbeam, L. H. and Nielsen, T. F. D. and Waight, T. E. (2013) Digestion Fractional Crystallization (DFC): an Important Process in the Genesis of Kimberlites. Evidence from Olivine in the Majuagaa Kimberlite, Southern West Greenland. Journal of Petrology, 54 (7). pp. 1399-1425. ISSN Print ISSN 0022-3530 - Online ISSN 1460-2415 DOI https://doi.org/10.1093/petrology/egt016 <https://doi.org/10.1093/petrology/egt016> |
op_doi |
https://doi.org/10.1093/petrology/egt016 |
container_title |
Journal of Petrology |
container_volume |
54 |
container_issue |
7 |
container_start_page |
1399 |
op_container_end_page |
1425 |
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1766016051201441792 |