CORUNDUM+QUARTZ ASSOCIATION IN ARCHEAN GRANULITE-FACIES ROCK FROM ENDERBY LAND, EAST ANTARCTICA : PRELIMINARY INTERPRETATION
Corundum occurs in direct contact with quartz in a high-temperature granulite-facies metamorphosed quartzite from the Archean Napier Complex in Enderby Land, East Antarctica. The quartzite is composed dominantly of bluish-gray quartz with mesoperthitic K-feldspar and spinel as subordinate constituen...
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Department of Geology and Mineralogy, Faculty of Science, Hokkaido University:(Present address)Department of Applied Geology, University of New South Wales
1987
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ftnipr:oai:nipr.repo.nii.ac.jp:00002536 2023-05-15T13:48:59+02:00 CORUNDUM+QUARTZ ASSOCIATION IN ARCHEAN GRANULITE-FACIES ROCK FROM ENDERBY LAND, EAST ANTARCTICA : PRELIMINARY INTERPRETATION モトヨシ ヨウイチ マツエダ ヒロハル Yoichi MOTOYOSHI Hiroharu MATSUEDA 1987-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2536 http://id.nii.ac.jp/1291/00002536/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2536&item_no=1&attribute_id=18&file_no=1 en eng Department of Geology and Mineralogy, Faculty of Science, Hokkaido University:(Present address)Department of Applied Geology, University of New South Wales Institute of Mining Geology, Mining College, Akita University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2536 http://id.nii.ac.jp/1291/00002536/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 1, 107-112(1987-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2536&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1987 ftnipr 2022-11-19T19:41:20Z Corundum occurs in direct contact with quartz in a high-temperature granulite-facies metamorphosed quartzite from the Archean Napier Complex in Enderby Land, East Antarctica. The quartzite is composed dominantly of bluish-gray quartz with mesoperthitic K-feldspar and spinel as subordinate constituents. Corundum occurs always being interlocked with spinel and both minerals are in direct contact with quartz. Under the P-T conditions of the Napier granulites (900-1000℃, 7-10kbar), sillimanite should be a stable Al_2SiO_5,and corundum cannot coexist stably with quartz. On the basis of the petrographical evidence, the corundum is inferred to be an exsolved product from spinel solid solution upon cooling, and it did not react with surrounding quartz to form Al_2SiO_5 probably due to the high activation energy required for the solid-solid interaction between corundum and quartz. Report Antarc* Antarctica East Antarctica Enderby Land National Institute of Polar Research Repository, Japan East Antarctica Napier ENVELOPE(-58.440,-58.440,-62.167,-62.167) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
Corundum occurs in direct contact with quartz in a high-temperature granulite-facies metamorphosed quartzite from the Archean Napier Complex in Enderby Land, East Antarctica. The quartzite is composed dominantly of bluish-gray quartz with mesoperthitic K-feldspar and spinel as subordinate constituents. Corundum occurs always being interlocked with spinel and both minerals are in direct contact with quartz. Under the P-T conditions of the Napier granulites (900-1000℃, 7-10kbar), sillimanite should be a stable Al_2SiO_5,and corundum cannot coexist stably with quartz. On the basis of the petrographical evidence, the corundum is inferred to be an exsolved product from spinel solid solution upon cooling, and it did not react with surrounding quartz to form Al_2SiO_5 probably due to the high activation energy required for the solid-solid interaction between corundum and quartz. |
format |
Report |
author |
モトヨシ ヨウイチ マツエダ ヒロハル Yoichi MOTOYOSHI Hiroharu MATSUEDA |
spellingShingle |
モトヨシ ヨウイチ マツエダ ヒロハル Yoichi MOTOYOSHI Hiroharu MATSUEDA CORUNDUM+QUARTZ ASSOCIATION IN ARCHEAN GRANULITE-FACIES ROCK FROM ENDERBY LAND, EAST ANTARCTICA : PRELIMINARY INTERPRETATION |
author_facet |
モトヨシ ヨウイチ マツエダ ヒロハル Yoichi MOTOYOSHI Hiroharu MATSUEDA |
author_sort |
モトヨシ ヨウイチ |
title |
CORUNDUM+QUARTZ ASSOCIATION IN ARCHEAN GRANULITE-FACIES ROCK FROM ENDERBY LAND, EAST ANTARCTICA : PRELIMINARY INTERPRETATION |
title_short |
CORUNDUM+QUARTZ ASSOCIATION IN ARCHEAN GRANULITE-FACIES ROCK FROM ENDERBY LAND, EAST ANTARCTICA : PRELIMINARY INTERPRETATION |
title_full |
CORUNDUM+QUARTZ ASSOCIATION IN ARCHEAN GRANULITE-FACIES ROCK FROM ENDERBY LAND, EAST ANTARCTICA : PRELIMINARY INTERPRETATION |
title_fullStr |
CORUNDUM+QUARTZ ASSOCIATION IN ARCHEAN GRANULITE-FACIES ROCK FROM ENDERBY LAND, EAST ANTARCTICA : PRELIMINARY INTERPRETATION |
title_full_unstemmed |
CORUNDUM+QUARTZ ASSOCIATION IN ARCHEAN GRANULITE-FACIES ROCK FROM ENDERBY LAND, EAST ANTARCTICA : PRELIMINARY INTERPRETATION |
title_sort |
corundum+quartz association in archean granulite-facies rock from enderby land, east antarctica : preliminary interpretation |
publisher |
Department of Geology and Mineralogy, Faculty of Science, Hokkaido University:(Present address)Department of Applied Geology, University of New South Wales |
publishDate |
1987 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2536 http://id.nii.ac.jp/1291/00002536/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2536&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(-58.440,-58.440,-62.167,-62.167) |
geographic |
East Antarctica Napier |
geographic_facet |
East Antarctica Napier |
genre |
Antarc* Antarctica East Antarctica Enderby Land |
genre_facet |
Antarc* Antarctica East Antarctica Enderby Land |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2536 http://id.nii.ac.jp/1291/00002536/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 1, 107-112(1987-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2536&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250276394631168 |