High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene
The phase lelations in the system of Mg-rich garnet composition (P_1p_<75>Alm_<25>) were investigated using a piston cylinder appaiatus at 11-23 kbai and 1000-1300℃ The following mineral assemblages were obtained with decieasing pressure at 1200℃ garnet, garnet + oithopyroxene + sapphinn...
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Division of Earth Sciences, Department of Biosphere-Geosphere Sciences, Faculty of Science, Ehime University/Division of Earth Sciences, Department of Biosphere-Geosphere Sciences, Faculty of Science, Ehime University
2002
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ftnipr:oai:nipr.repo.nii.ac.jp:00003109 2023-05-15T16:06:10+02:00 High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene Sato, Kei Kawasaki, Toshisuke 2002-10 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3109 http://id.nii.ac.jp/1291/00003109/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3109&item_no=1&attribute_id=18&file_no=1 en eng Division of Earth Sciences, Department of Biosphere-Geosphere Sciences, Faculty of Science, Ehime University/Division of Earth Sciences, Department of Biosphere-Geosphere Sciences, Faculty of Science, Ehime University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3109 http://id.nii.ac.jp/1291/00003109/ AA1130866X Polar geoscience, 15, 66-79(2002-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3109&item_no=1&attribute_id=18&file_no=1 P-T diagram of the Mg-rich garnet system Fe-Mg paititioning geothermometer ultrahigh-temperature metamorphism Departmental Bulletin Paper P(論文) 2002 ftnipr 2022-12-03T19:43:04Z The phase lelations in the system of Mg-rich garnet composition (P_1p_<75>Alm_<25>) were investigated using a piston cylinder appaiatus at 11-23 kbai and 1000-1300℃ The following mineral assemblages were obtained with decieasing pressure at 1200℃ garnet, garnet + oithopyroxene + sapphinne + quartz, orthopyroxene + sapphmne + quartz At 11 kbar the assemblage of orthopyioxene + sapphirine + quartz changed to that of orthopyroxene + sapphirine + quartz + sillimanite at a certain temperatuie between 1000 and 1100℃ The Fe-Mg distribution coefficients of coexisting garnet and orthopyioxene K_D = (X_<Mg>/X_<〓〓>)^<0p〓>(X_<〓〓>/X_<Mg>)^<cnt> was experimentally determined The new gamet-oithopyroxene geothermometet has been obtained as 7(℃) = (2387±146)/[1nK_D + (1 20±0 10)]-273 We estimated the retrogiade metamoiphic temperatures of UHT metamorphic rocks from Enderby Land East Antaictica as 812-1010℃ Our estimations matched with previous estimations based on Fe-Mg exchange and were about 200-300℃ lowei than those of previous estimations based on feldspai theimometry Report Enderby Land Polar geoscience National Institute of Polar Research Repository, Japan |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
P-T diagram of the Mg-rich garnet system Fe-Mg paititioning geothermometer ultrahigh-temperature metamorphism |
spellingShingle |
P-T diagram of the Mg-rich garnet system Fe-Mg paititioning geothermometer ultrahigh-temperature metamorphism Sato, Kei Kawasaki, Toshisuke High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene |
topic_facet |
P-T diagram of the Mg-rich garnet system Fe-Mg paititioning geothermometer ultrahigh-temperature metamorphism |
description |
The phase lelations in the system of Mg-rich garnet composition (P_1p_<75>Alm_<25>) were investigated using a piston cylinder appaiatus at 11-23 kbai and 1000-1300℃ The following mineral assemblages were obtained with decieasing pressure at 1200℃ garnet, garnet + oithopyroxene + sapphinne + quartz, orthopyroxene + sapphmne + quartz At 11 kbar the assemblage of orthopyioxene + sapphirine + quartz changed to that of orthopyroxene + sapphirine + quartz + sillimanite at a certain temperatuie between 1000 and 1100℃ The Fe-Mg distribution coefficients of coexisting garnet and orthopyioxene K_D = (X_<Mg>/X_<〓〓>)^<0p〓>(X_<〓〓>/X_<Mg>)^<cnt> was experimentally determined The new gamet-oithopyroxene geothermometet has been obtained as 7(℃) = (2387±146)/[1nK_D + (1 20±0 10)]-273 We estimated the retrogiade metamoiphic temperatures of UHT metamorphic rocks from Enderby Land East Antaictica as 812-1010℃ Our estimations matched with previous estimations based on Fe-Mg exchange and were about 200-300℃ lowei than those of previous estimations based on feldspai theimometry |
format |
Report |
author |
Sato, Kei Kawasaki, Toshisuke |
author_facet |
Sato, Kei Kawasaki, Toshisuke |
author_sort |
Sato, Kei |
title |
High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene |
title_short |
High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene |
title_full |
High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene |
title_fullStr |
High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene |
title_full_unstemmed |
High-pressure and high-temperature experiments on the phase relations in the system of Mg-rich garnet composition (Prp75Alm25): Implication for the Fe-Mg partitioning between garnet and orthopyroxene |
title_sort |
high-pressure and high-temperature experiments on the phase relations in the system of mg-rich garnet composition (prp75alm25): implication for the fe-mg partitioning between garnet and orthopyroxene |
publisher |
Division of Earth Sciences, Department of Biosphere-Geosphere Sciences, Faculty of Science, Ehime University/Division of Earth Sciences, Department of Biosphere-Geosphere Sciences, Faculty of Science, Ehime University |
publishDate |
2002 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3109 http://id.nii.ac.jp/1291/00003109/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3109&item_no=1&attribute_id=18&file_no=1 |
genre |
Enderby Land Polar geoscience |
genre_facet |
Enderby Land Polar geoscience |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3109 http://id.nii.ac.jp/1291/00003109/ AA1130866X Polar geoscience, 15, 66-79(2002-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3109&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766402083792093184 |