NATURAL REMANENT MAGNETIZATION OF SOME ROCKS FROM SOUTHERN SRI LANKA
The first detailed paleomagnetic studies were performed for the samples from southern Sri Lanka. The stable NRM components were recognized in the Tonigala granite, pink granite, Gallodai dolerite and some gneisses. The reliable NRMs were obtained by the AF demagnetization 30 or 35mT from the Tonigal...
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National Institute of Polar Research
1990
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ftnipr:oai:nipr.repo.nii.ac.jp:00002636 2023-05-15T13:48:59+02:00 NATURAL REMANENT MAGNETIZATION OF SOME ROCKS FROM SOUTHERN SRI LANKA フナキ ミノル ヨシダ マサル / Minoru FUNAKI Masaru YOSHIDA P.W. VITANAGE 1990-09 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2636 http://id.nii.ac.jp/1291/00002636/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2636&item_no=1&attribute_id=18&file_no=1 en eng National Institute of Polar Research Department of Geosciences, Osaka City University Department of Geology, University of Peradeniya https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2636 http://id.nii.ac.jp/1291/00002636/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 4, 231-240(1990-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2636&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1990 ftnipr 2022-11-19T19:41:20Z The first detailed paleomagnetic studies were performed for the samples from southern Sri Lanka. The stable NRM components were recognized in the Tonigala granite, pink granite, Gallodai dolerite and some gneisses. The reliable NRMs were obtained by the AF demagnetization 30 or 35mT from the Tonigala granite, pink granite and Gallodai dolerite. The VGP positions were elucidated as the latitude (Lat)=6.1°S, longitude (Lon)=28.0°E, α_<95>=6.2°, Lat=27.1°N, Lon=38.5°E, α_<95>=11.0° and Lat=8.5°N, Lon=152.9°E, α_<95>=6.4° respectively. Sri Lanka is rotated around a pole position (Lat=5.3°S, Lon=23.8°E, with -100.5° of counterclockwise angle) which was decided by adjusting the VGPs of both Cambro-Ordovician and the latest Jurassic periods from the Tonigala granite, Gallodai dolerite of Sri Lanka and the previous results from East Antarctica. Thus, the location of Sri Lanka is settled in Gondwana in the offing of eastern Queen Maud Land. A model of juxtaposition of Sri Lanka with Lutzow-Holm Bay was shown, taking into account the conformity of declinations of Cambro-Ordovician NRMs of the two areas. Report Antarc* Antarctica East Antarctica Queen Maud Land National Institute of Polar Research Repository, Japan East Antarctica Queen Maud Land ENVELOPE(12.000,12.000,-72.500,-72.500) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
The first detailed paleomagnetic studies were performed for the samples from southern Sri Lanka. The stable NRM components were recognized in the Tonigala granite, pink granite, Gallodai dolerite and some gneisses. The reliable NRMs were obtained by the AF demagnetization 30 or 35mT from the Tonigala granite, pink granite and Gallodai dolerite. The VGP positions were elucidated as the latitude (Lat)=6.1°S, longitude (Lon)=28.0°E, α_<95>=6.2°, Lat=27.1°N, Lon=38.5°E, α_<95>=11.0° and Lat=8.5°N, Lon=152.9°E, α_<95>=6.4° respectively. Sri Lanka is rotated around a pole position (Lat=5.3°S, Lon=23.8°E, with -100.5° of counterclockwise angle) which was decided by adjusting the VGPs of both Cambro-Ordovician and the latest Jurassic periods from the Tonigala granite, Gallodai dolerite of Sri Lanka and the previous results from East Antarctica. Thus, the location of Sri Lanka is settled in Gondwana in the offing of eastern Queen Maud Land. A model of juxtaposition of Sri Lanka with Lutzow-Holm Bay was shown, taking into account the conformity of declinations of Cambro-Ordovician NRMs of the two areas. |
format |
Report |
author |
フナキ ミノル ヨシダ マサル / Minoru FUNAKI Masaru YOSHIDA P.W. VITANAGE |
spellingShingle |
フナキ ミノル ヨシダ マサル / Minoru FUNAKI Masaru YOSHIDA P.W. VITANAGE NATURAL REMANENT MAGNETIZATION OF SOME ROCKS FROM SOUTHERN SRI LANKA |
author_facet |
フナキ ミノル ヨシダ マサル / Minoru FUNAKI Masaru YOSHIDA P.W. VITANAGE |
author_sort |
フナキ ミノル |
title |
NATURAL REMANENT MAGNETIZATION OF SOME ROCKS FROM SOUTHERN SRI LANKA |
title_short |
NATURAL REMANENT MAGNETIZATION OF SOME ROCKS FROM SOUTHERN SRI LANKA |
title_full |
NATURAL REMANENT MAGNETIZATION OF SOME ROCKS FROM SOUTHERN SRI LANKA |
title_fullStr |
NATURAL REMANENT MAGNETIZATION OF SOME ROCKS FROM SOUTHERN SRI LANKA |
title_full_unstemmed |
NATURAL REMANENT MAGNETIZATION OF SOME ROCKS FROM SOUTHERN SRI LANKA |
title_sort |
natural remanent magnetization of some rocks from southern sri lanka |
publisher |
National Institute of Polar Research |
publishDate |
1990 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2636 http://id.nii.ac.jp/1291/00002636/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2636&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(12.000,12.000,-72.500,-72.500) |
geographic |
East Antarctica Queen Maud Land |
geographic_facet |
East Antarctica Queen Maud Land |
genre |
Antarc* Antarctica East Antarctica Queen Maud Land |
genre_facet |
Antarc* Antarctica East Antarctica Queen Maud Land |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2636 http://id.nii.ac.jp/1291/00002636/ AA1072335X Proceedings of the NIPR Symposium on Antarctic Geosciences, 4, 231-240(1990-09) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2636&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250292404289536 |