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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Main Authors: 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
Format: Report
Language:English
Published: Geological Survey of Japan 1988
Subjects:
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2568
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spelling 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