AMMONIUM CONTENT OF BIOTITES FROM GRANITIC AND METAMORPHIC ROCKS IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA
Ammonium content of biotites from granitic and metamorphic rocks in the Sør Rondane Mountains in East Antarctica has been determined in order to examine the difference in the NH_4^+ content of biotites among six granite types. Ammonium content of biotites ranges from 12 to 23ppm (average, 18ppm) in...
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Department of Geology, Faculty of Education, Kobe University
1991
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ftnipr:oai:nipr.repo.nii.ac.jp:00002692 2023-05-15T13:49:00+02:00 AMMONIUM CONTENT OF BIOTITES FROM GRANITIC AND METAMORPHIC ROCKS IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA タイノショウ ヨシアキ タカハシ ユウヘイ オサナイ ヤスヒト ツチヤ ノリヨシ Yoshiaki TAINOSHO Yuhei TAKAHASHI Yasuhito OSANAI Noriyoshi TSUCHIYA 1991-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2692 http://id.nii.ac.jp/1291/00002692/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2692&item_no=1&attribute_id=18&file_no=1 en eng Department of Geology, Faculty of Education, Kobe University Geological Survey of Japan Department of Earth Science and Astronomy, Fukuoka University of Education Department of Resources Engineering, Faculty of Engineering, Tohoku University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2692 http://id.nii.ac.jp/1291/00002692/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 5, 112-121(1991-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2692&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1991 ftnipr 2022-11-26T19:42:11Z Ammonium content of biotites from granitic and metamorphic rocks in the Sør Rondane Mountains in East Antarctica has been determined in order to examine the difference in the NH_4^+ content of biotites among six granite types. Ammonium content of biotites ranges from 12 to 23ppm (average, 18ppm) in the migmatitic granite, 23 to 80ppm in the foliated granite (average, 46ppm), 22 to 86ppm (average, 66ppm) in the massive granite with migmatitic margin, 11 to 66ppm (average, 42ppm) in the discordant granite, 28 to 106ppm (average, 67ppm) in the granite sheet and dyke, 76 to 109ppm (average, 92ppm) in the small granodiorite bodies, and 25 to 142 ppm (average, 52ppm) in the metamorphic rocks. High NH_4^+ content found in biotites from the small granodiorite bodies is probably due to a result of the interaction between the granitic magma and surrounding metamorphic rocks. Biotites from the migmatitic granite have lowest NH_4^+ content in granitic rocks analyzed. The fact is in discord with the field evidence. The very low NH_4^+ content in biotite from the Nils Larsen tonalite is in good accordance with the view postulated from petrochemical data that granitic magma of this tonalite was directly derived from the melting of subducted oceanic crust or the overlying mantle. In metamorphic rocks, the low NH_4^+ content in biotites is probably due to liberation of NH_4^+ from the rocks during high grade metamorphism (granulite facies). Report Antarc* Antarctica East Antarctica National Institute of Polar Research Repository, Japan East Antarctica Nils ENVELOPE(48.017,48.017,-68.067,-68.067) Sør-Rondane ENVELOPE(25.000,25.000,-72.000,-72.000) Sør Rondane Mountains ENVELOPE(25.000,25.000,-72.000,-72.000) Nils Larsen ENVELOPE(23.167,23.167,-72.300,-72.300) |
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Open Polar |
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National Institute of Polar Research Repository, Japan |
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language |
English |
description |
Ammonium content of biotites from granitic and metamorphic rocks in the Sør Rondane Mountains in East Antarctica has been determined in order to examine the difference in the NH_4^+ content of biotites among six granite types. Ammonium content of biotites ranges from 12 to 23ppm (average, 18ppm) in the migmatitic granite, 23 to 80ppm in the foliated granite (average, 46ppm), 22 to 86ppm (average, 66ppm) in the massive granite with migmatitic margin, 11 to 66ppm (average, 42ppm) in the discordant granite, 28 to 106ppm (average, 67ppm) in the granite sheet and dyke, 76 to 109ppm (average, 92ppm) in the small granodiorite bodies, and 25 to 142 ppm (average, 52ppm) in the metamorphic rocks. High NH_4^+ content found in biotites from the small granodiorite bodies is probably due to a result of the interaction between the granitic magma and surrounding metamorphic rocks. Biotites from the migmatitic granite have lowest NH_4^+ content in granitic rocks analyzed. The fact is in discord with the field evidence. The very low NH_4^+ content in biotite from the Nils Larsen tonalite is in good accordance with the view postulated from petrochemical data that granitic magma of this tonalite was directly derived from the melting of subducted oceanic crust or the overlying mantle. In metamorphic rocks, the low NH_4^+ content in biotites is probably due to liberation of NH_4^+ from the rocks during high grade metamorphism (granulite facies). |
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Report |
author |
タイノショウ ヨシアキ タカハシ ユウヘイ オサナイ ヤスヒト ツチヤ ノリヨシ Yoshiaki TAINOSHO Yuhei TAKAHASHI Yasuhito OSANAI Noriyoshi TSUCHIYA |
spellingShingle |
タイノショウ ヨシアキ タカハシ ユウヘイ オサナイ ヤスヒト ツチヤ ノリヨシ Yoshiaki TAINOSHO Yuhei TAKAHASHI Yasuhito OSANAI Noriyoshi TSUCHIYA AMMONIUM CONTENT OF BIOTITES FROM GRANITIC AND METAMORPHIC ROCKS IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
author_facet |
タイノショウ ヨシアキ タカハシ ユウヘイ オサナイ ヤスヒト ツチヤ ノリヨシ Yoshiaki TAINOSHO Yuhei TAKAHASHI Yasuhito OSANAI Noriyoshi TSUCHIYA |
author_sort |
タイノショウ ヨシアキ |
title |
AMMONIUM CONTENT OF BIOTITES FROM GRANITIC AND METAMORPHIC ROCKS IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_short |
AMMONIUM CONTENT OF BIOTITES FROM GRANITIC AND METAMORPHIC ROCKS IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_full |
AMMONIUM CONTENT OF BIOTITES FROM GRANITIC AND METAMORPHIC ROCKS IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_fullStr |
AMMONIUM CONTENT OF BIOTITES FROM GRANITIC AND METAMORPHIC ROCKS IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_full_unstemmed |
AMMONIUM CONTENT OF BIOTITES FROM GRANITIC AND METAMORPHIC ROCKS IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_sort |
ammonium content of biotites from granitic and metamorphic rocks in the sør rondane mountains, east antarctica |
publisher |
Department of Geology, Faculty of Education, Kobe University |
publishDate |
1991 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2692 http://id.nii.ac.jp/1291/00002692/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2692&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(48.017,48.017,-68.067,-68.067) ENVELOPE(25.000,25.000,-72.000,-72.000) ENVELOPE(25.000,25.000,-72.000,-72.000) ENVELOPE(23.167,23.167,-72.300,-72.300) |
geographic |
East Antarctica Nils Sør-Rondane Sør Rondane Mountains Nils Larsen |
geographic_facet |
East Antarctica Nils Sør-Rondane Sør Rondane Mountains Nils Larsen |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2692 http://id.nii.ac.jp/1291/00002692/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 5, 112-121(1991-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2692&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250297299042304 |