TRACE ELEMENT CHARACTERISTICS OF METAMORPHIC AND PLUTONIC ROCKS FROM THE BELGICA MOUNTAINS, EAST ANTARCTICA
Metamorphic and plutonic rocks from the Belgica Mountains, East Antarctica, have been geochemically examined to evaluate original rock types and petrogenesis. Trace element compositions on 16 samples from the Belgica Mountains and 4 samples from the Yamato Mountains were determined with an X-ray flu...
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Geological Survey of Japan
1988
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ftnipr:oai:nipr.repo.nii.ac.jp:00002568 2023-05-15T13:48:59+02:00 TRACE ELEMENT CHARACTERISTICS OF METAMORPHIC AND PLUTONIC ROCKS FROM THE BELGICA MOUNTAINS, EAST ANTARCTICA オガサワラ マサツグ コジマ ヒデヤス ヤナイ ケイゾウ ニシダ タミオ Masatsugu OGASAWARA Hideyasu KOJIMA Keizo YANAI Tamio NISHIDA 1988-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2568 http://id.nii.ac.jp/1291/00002568/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2568&item_no=1&attribute_id=18&file_no=1 en eng Geological Survey of Japan National Institute of Polar Research Institute of Earth Science, Faculty of Education, Saga University https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2568 http://id.nii.ac.jp/1291/00002568/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 2, 133-145(1988-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2568&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1988 ftnipr 2022-11-19T19:41:20Z Metamorphic and plutonic rocks from the Belgica Mountains, East Antarctica, have been geochemically examined to evaluate original rock types and petrogenesis. Trace element compositions on 16 samples from the Belgica Mountains and 4 samples from the Yamato Mountains were determined with an X-ray fluorescence spectrometer. High concentrations of Ba, Rb and Sr with very low levels of Nb, P and Y were found on granitic gneisses. The chemical feature is considered to represent the result of in situ partial melting. Basic and intermediate metamorphic rocks show variable compositions. Some of the rocks have slight enrichment of LIL elements with distinct Nb depletion. The chemical characteristics indicate that the rocks were generated probably under subduction environment. Syenitic rocks from the Belgica Mountains and gneisses from the Yamato Mountains are extremely enriched in Ba, Rb, Sr and Zr. Enriched source must be considered for the generation of the syenitic magma. Report Antarc* Antarctica East Antarctica National Institute of Polar Research Repository, Japan East Antarctica Yamato ENVELOPE(35.583,35.583,-71.417,-71.417) Belgica Mountains ENVELOPE(31.250,31.250,-72.583,-72.583) Belgica, Mountains ENVELOPE(31.167,31.167,-72.500,-72.500) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
Metamorphic and plutonic rocks from the Belgica Mountains, East Antarctica, have been geochemically examined to evaluate original rock types and petrogenesis. Trace element compositions on 16 samples from the Belgica Mountains and 4 samples from the Yamato Mountains were determined with an X-ray fluorescence spectrometer. High concentrations of Ba, Rb and Sr with very low levels of Nb, P and Y were found on granitic gneisses. The chemical feature is considered to represent the result of in situ partial melting. Basic and intermediate metamorphic rocks show variable compositions. Some of the rocks have slight enrichment of LIL elements with distinct Nb depletion. The chemical characteristics indicate that the rocks were generated probably under subduction environment. Syenitic rocks from the Belgica Mountains and gneisses from the Yamato Mountains are extremely enriched in Ba, Rb, Sr and Zr. Enriched source must be considered for the generation of the syenitic magma. |
format |
Report |
author |
オガサワラ マサツグ コジマ ヒデヤス ヤナイ ケイゾウ ニシダ タミオ Masatsugu OGASAWARA Hideyasu KOJIMA Keizo YANAI Tamio NISHIDA |
spellingShingle |
オガサワラ マサツグ コジマ ヒデヤス ヤナイ ケイゾウ ニシダ タミオ Masatsugu OGASAWARA Hideyasu KOJIMA Keizo YANAI Tamio NISHIDA TRACE ELEMENT CHARACTERISTICS OF METAMORPHIC AND PLUTONIC ROCKS FROM THE BELGICA MOUNTAINS, EAST ANTARCTICA |
author_facet |
オガサワラ マサツグ コジマ ヒデヤス ヤナイ ケイゾウ ニシダ タミオ Masatsugu OGASAWARA Hideyasu KOJIMA Keizo YANAI Tamio NISHIDA |
author_sort |
オガサワラ マサツグ |
title |
TRACE ELEMENT CHARACTERISTICS OF METAMORPHIC AND PLUTONIC ROCKS FROM THE BELGICA MOUNTAINS, EAST ANTARCTICA |
title_short |
TRACE ELEMENT CHARACTERISTICS OF METAMORPHIC AND PLUTONIC ROCKS FROM THE BELGICA MOUNTAINS, EAST ANTARCTICA |
title_full |
TRACE ELEMENT CHARACTERISTICS OF METAMORPHIC AND PLUTONIC ROCKS FROM THE BELGICA MOUNTAINS, EAST ANTARCTICA |
title_fullStr |
TRACE ELEMENT CHARACTERISTICS OF METAMORPHIC AND PLUTONIC ROCKS FROM THE BELGICA MOUNTAINS, EAST ANTARCTICA |
title_full_unstemmed |
TRACE ELEMENT CHARACTERISTICS OF METAMORPHIC AND PLUTONIC ROCKS FROM THE BELGICA MOUNTAINS, EAST ANTARCTICA |
title_sort |
trace element characteristics of metamorphic and plutonic rocks from the belgica mountains, east antarctica |
publisher |
Geological Survey of Japan |
publishDate |
1988 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2568 http://id.nii.ac.jp/1291/00002568/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2568&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(35.583,35.583,-71.417,-71.417) ENVELOPE(31.250,31.250,-72.583,-72.583) ENVELOPE(31.167,31.167,-72.500,-72.500) |
geographic |
East Antarctica Yamato Belgica Mountains Belgica, Mountains |
geographic_facet |
East Antarctica Yamato Belgica Mountains Belgica, Mountains |
genre |
Antarc* Antarctica East Antarctica |
genre_facet |
Antarc* Antarctica East Antarctica |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2568 http://id.nii.ac.jp/1291/00002568/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 2, 133-145(1988-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2568&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250281326084096 |