NATURAL REMANENT MAGNETIZATIONS OF GRANITE AND SYENITE FROM PINGVINANE AND LUNCKERYGGEN IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA
The characteristics of the natural remanent magnetizations (NRMs) of granite and syenite from Pingvinane and Lunckeryggen in the western Sør Rondane Mountains were elucidated. In order to endorse the NRMs, AF and thermal demagnetization, thermomagnetic and magnetic hysteresis properties were analyze...
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National Institute of Polar Research
1990
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ftnipr:oai:nipr.repo.nii.ac.jp:00002621 2023-05-15T13:48:59+02:00 NATURAL REMANENT MAGNETIZATIONS OF GRANITE AND SYENITE FROM PINGVINANE AND LUNCKERYGGEN IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA フナキ ミノル トキエダ カツヤス Minoru FUNAKI Katsuyasu TOKIEDA 1990-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2621 http://id.nii.ac.jp/1291/00002621/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2621&item_no=1&attribute_id=18&file_no=1 en eng National Institute of Polar Research Department of Physics, Faculty of Sciences, Shimane University https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2621 http://id.nii.ac.jp/1291/00002621/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 4, 67-79(1990-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2621&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1990 ftnipr 2022-11-19T19:41:20Z The characteristics of the natural remanent magnetizations (NRMs) of granite and syenite from Pingvinane and Lunckeryggen in the western Sør Rondane Mountains were elucidated. In order to endorse the NRMs, AF and thermal demagnetization, thermomagnetic and magnetic hysteresis properties were analyzed. Furthermore, microscopic observations were carried out for identification of the magnetic grains.Consequently, reliable mean NRM directions acquired in early Silurian period were given from the Pingvinane granite as I=68.3°, D=315.3°, α_<95>=4.1° and the Lunckeryggen syenite as I=74.0°, D=327.3°, α_<95>=7.0°. Part of the syenite and granite from Lunckeryggen showed different NRM directions as I=79.8°, D=201.3°, α_<95>=9.3°, and as I=39.8°, D=178.9°, α_<95>=12.1°, respectively, although their meaning was not elucidated in this paper. The syenite and granite from Lunckeryggen include magnetite for NRM carriers with heterogeneous size distributions, which would cause a wide scattering of their NRMs. The virtual geomagnetic pole positions calculated from the established NRMs were at 37.4°S, 10.5°W, for the Pingvinane granite and 44.6°S, 1.0°E, for the Lunckeryggen syenite. These positions are consistent with the previous result reported by J.D.A. ZIJDERVELD (J. Geophys. Res., 73,3773,1968). Report Antarc* Antarctica East Antarctica Geomagnetic Pole National Institute of Polar Research Repository, Japan East Antarctica Sør-Rondane ENVELOPE(25.000,25.000,-72.000,-72.000) Sør Rondane Mountains ENVELOPE(25.000,25.000,-72.000,-72.000) Lunckeryggen ENVELOPE(24.600,24.600,-72.042,-72.042) Pingvinane ENVELOPE(23.283,23.283,-72.000,-72.000) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
The characteristics of the natural remanent magnetizations (NRMs) of granite and syenite from Pingvinane and Lunckeryggen in the western Sør Rondane Mountains were elucidated. In order to endorse the NRMs, AF and thermal demagnetization, thermomagnetic and magnetic hysteresis properties were analyzed. Furthermore, microscopic observations were carried out for identification of the magnetic grains.Consequently, reliable mean NRM directions acquired in early Silurian period were given from the Pingvinane granite as I=68.3°, D=315.3°, α_<95>=4.1° and the Lunckeryggen syenite as I=74.0°, D=327.3°, α_<95>=7.0°. Part of the syenite and granite from Lunckeryggen showed different NRM directions as I=79.8°, D=201.3°, α_<95>=9.3°, and as I=39.8°, D=178.9°, α_<95>=12.1°, respectively, although their meaning was not elucidated in this paper. The syenite and granite from Lunckeryggen include magnetite for NRM carriers with heterogeneous size distributions, which would cause a wide scattering of their NRMs. The virtual geomagnetic pole positions calculated from the established NRMs were at 37.4°S, 10.5°W, for the Pingvinane granite and 44.6°S, 1.0°E, for the Lunckeryggen syenite. These positions are consistent with the previous result reported by J.D.A. ZIJDERVELD (J. Geophys. Res., 73,3773,1968). |
format |
Report |
author |
フナキ ミノル トキエダ カツヤス Minoru FUNAKI Katsuyasu TOKIEDA |
spellingShingle |
フナキ ミノル トキエダ カツヤス Minoru FUNAKI Katsuyasu TOKIEDA NATURAL REMANENT MAGNETIZATIONS OF GRANITE AND SYENITE FROM PINGVINANE AND LUNCKERYGGEN IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
author_facet |
フナキ ミノル トキエダ カツヤス Minoru FUNAKI Katsuyasu TOKIEDA |
author_sort |
フナキ ミノル |
title |
NATURAL REMANENT MAGNETIZATIONS OF GRANITE AND SYENITE FROM PINGVINANE AND LUNCKERYGGEN IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_short |
NATURAL REMANENT MAGNETIZATIONS OF GRANITE AND SYENITE FROM PINGVINANE AND LUNCKERYGGEN IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_full |
NATURAL REMANENT MAGNETIZATIONS OF GRANITE AND SYENITE FROM PINGVINANE AND LUNCKERYGGEN IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_fullStr |
NATURAL REMANENT MAGNETIZATIONS OF GRANITE AND SYENITE FROM PINGVINANE AND LUNCKERYGGEN IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_full_unstemmed |
NATURAL REMANENT MAGNETIZATIONS OF GRANITE AND SYENITE FROM PINGVINANE AND LUNCKERYGGEN IN THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA |
title_sort |
natural remanent magnetizations of granite and syenite from pingvinane and lunckeryggen in the sør rondane mountains, east antarctica |
publisher |
National Institute of Polar Research |
publishDate |
1990 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2621 http://id.nii.ac.jp/1291/00002621/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2621&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(25.000,25.000,-72.000,-72.000) ENVELOPE(25.000,25.000,-72.000,-72.000) ENVELOPE(24.600,24.600,-72.042,-72.042) ENVELOPE(23.283,23.283,-72.000,-72.000) |
geographic |
East Antarctica Sør-Rondane Sør Rondane Mountains Lunckeryggen Pingvinane |
geographic_facet |
East Antarctica Sør-Rondane Sør Rondane Mountains Lunckeryggen Pingvinane |
genre |
Antarc* Antarctica East Antarctica Geomagnetic Pole |
genre_facet |
Antarc* Antarctica East Antarctica Geomagnetic Pole |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2621 http://id.nii.ac.jp/1291/00002621/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 4, 67-79(1990-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2621&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250288872685568 |