Paleomagnetic study of the Mount Riiser-Larsen area in Enderby Land, East Antarctica
Paleomagnetic analyses were performed on samples of two sites from felsic gneiss of the Archaean Napier Complex and two sites from a dolerite dike (Amundsen dikes) in the Mt Rnser-Larsen area in Enderby Land, East Antarctica As a result of progressive demagnetization experiments, directions of the h...
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School of Earth Sciences, IHS, Kyoto University
2000
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ftnipr:oai:nipr.repo.nii.ac.jp:00003070 2023-05-15T13:49:00+02:00 Paleomagnetic study of the Mount Riiser-Larsen area in Enderby Land, East Antarctica Naoto Ishikawa Minoru Funaki 2000-10 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3070 http://id.nii.ac.jp/1291/00003070/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3070&item_no=1&attribute_id=18&file_no=1 en eng School of Earth Sciences, IHS, Kyoto University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3070 http://id.nii.ac.jp/1291/00003070/ AA1130866X Polar geoscience, 13, 135-144(2000-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3070&item_no=1&attribute_id=18&file_no=1 paleomagnetism East Gondwanaland Mt Riiser-Larsen area the Amundsen dike the Napier Complex Departmental Bulletin Paper P(論文) 2000 ftnipr 2022-11-26T19:42:23Z Paleomagnetic analyses were performed on samples of two sites from felsic gneiss of the Archaean Napier Complex and two sites from a dolerite dike (Amundsen dikes) in the Mt Rnser-Larsen area in Enderby Land, East Antarctica As a result of progressive demagnetization experiments, directions of the high-stability (H) components, carried probably by fine-grained magnetite, were determined for one dolerite and two gneiss sites Among the three sites, gneiss samples at the two sites were found to be magnetically amsotropic, while magnetic fabrics at the dolerite site indicated the possibility that the fabrics are of primary origin Based on the results of demagnetization experiments and magnetic amsotropy measurements, the H component direction of one dolerite site was regarded as a primary one Virtual geomagnetic poles of two sites form the dolerite dikes in this study and Ishikawa and Funaki (1998) appeared to be situated near the segment of the apparent polar wander path between 1 0 and 1 2 Ga for Australia in the East Gondwanaland frame It might be implied that East Antarctica and Australia formed East Gondwanaland at the time of igneous activity of the Amundsen dikes Report Antarc* Antarctica East Antarctica Enderby Land Polar geoscience National Institute of Polar Research Repository, Japan East Antarctica Riiser-Larsen ENVELOPE(50.667,50.667,-66.783,-66.783) Napier ENVELOPE(-58.440,-58.440,-62.167,-62.167) Mount Riiser-Larsen ENVELOPE(50.667,50.667,-66.783,-66.783) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
paleomagnetism East Gondwanaland Mt Riiser-Larsen area the Amundsen dike the Napier Complex |
spellingShingle |
paleomagnetism East Gondwanaland Mt Riiser-Larsen area the Amundsen dike the Napier Complex Naoto Ishikawa Minoru Funaki Paleomagnetic study of the Mount Riiser-Larsen area in Enderby Land, East Antarctica |
topic_facet |
paleomagnetism East Gondwanaland Mt Riiser-Larsen area the Amundsen dike the Napier Complex |
description |
Paleomagnetic analyses were performed on samples of two sites from felsic gneiss of the Archaean Napier Complex and two sites from a dolerite dike (Amundsen dikes) in the Mt Rnser-Larsen area in Enderby Land, East Antarctica As a result of progressive demagnetization experiments, directions of the high-stability (H) components, carried probably by fine-grained magnetite, were determined for one dolerite and two gneiss sites Among the three sites, gneiss samples at the two sites were found to be magnetically amsotropic, while magnetic fabrics at the dolerite site indicated the possibility that the fabrics are of primary origin Based on the results of demagnetization experiments and magnetic amsotropy measurements, the H component direction of one dolerite site was regarded as a primary one Virtual geomagnetic poles of two sites form the dolerite dikes in this study and Ishikawa and Funaki (1998) appeared to be situated near the segment of the apparent polar wander path between 1 0 and 1 2 Ga for Australia in the East Gondwanaland frame It might be implied that East Antarctica and Australia formed East Gondwanaland at the time of igneous activity of the Amundsen dikes |
format |
Report |
author |
Naoto Ishikawa Minoru Funaki |
author_facet |
Naoto Ishikawa Minoru Funaki |
author_sort |
Naoto Ishikawa |
title |
Paleomagnetic study of the Mount Riiser-Larsen area in Enderby Land, East Antarctica |
title_short |
Paleomagnetic study of the Mount Riiser-Larsen area in Enderby Land, East Antarctica |
title_full |
Paleomagnetic study of the Mount Riiser-Larsen area in Enderby Land, East Antarctica |
title_fullStr |
Paleomagnetic study of the Mount Riiser-Larsen area in Enderby Land, East Antarctica |
title_full_unstemmed |
Paleomagnetic study of the Mount Riiser-Larsen area in Enderby Land, East Antarctica |
title_sort |
paleomagnetic study of the mount riiser-larsen area in enderby land, east antarctica |
publisher |
School of Earth Sciences, IHS, Kyoto University |
publishDate |
2000 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3070 http://id.nii.ac.jp/1291/00003070/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3070&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(50.667,50.667,-66.783,-66.783) ENVELOPE(-58.440,-58.440,-62.167,-62.167) ENVELOPE(50.667,50.667,-66.783,-66.783) |
geographic |
East Antarctica Riiser-Larsen Napier Mount Riiser-Larsen |
geographic_facet |
East Antarctica Riiser-Larsen Napier Mount Riiser-Larsen |
genre |
Antarc* Antarctica East Antarctica Enderby Land Polar geoscience |
genre_facet |
Antarc* Antarctica East Antarctica Enderby Land Polar geoscience |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3070 http://id.nii.ac.jp/1291/00003070/ AA1130866X Polar geoscience, 13, 135-144(2000-10) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3070&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250342119374848 |