Paleomagnetism of Antarctic Achondrites

P(論文) The paleointensity of two eucrites (ALHA77302 and ALHA78040), a ureilite (ALHA77257) and an eucritic unique achondrite (ALHA77005) has been newly estimated by means of a comparison of the AF-demagne-tization characteristics of their NRM with those of their ARM. The upper limit of paleointensit...

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Main Author: Nagata, Takesi
Language:English
Published: 1980
Subjects:
Antarctic
Antarc*
Memoirs of National Institute of Polar Research
Polar Research
Online Access:https://nipr.repo.nii.ac.jp/record/1103/files/KJ00000011629.pdf
id ftnipr:oai:nipr.repo.nii.ac.jp:00001103
record_format openpolar
spelling ftnipr:oai:nipr.repo.nii.ac.jp:00001103 2024-09-09T19:08:48+00:00 Paleomagnetism of Antarctic Achondrites Nagata, Takesi 1980-12 application/pdf https://nipr.repo.nii.ac.jp/record/1103/files/KJ00000011629.pdf eng eng Memoirs of National Institute of Polar Research. Special issue 17 233 242 AA00733561 https://nipr.repo.nii.ac.jp/record/1103/files/KJ00000011629.pdf 1980 ftnipr 2024-06-17T04:00:22Z P(論文) The paleointensity of two eucrites (ALHA77302 and ALHA78040), a ureilite (ALHA77257) and an eucritic unique achondrite (ALHA77005) has been newly estimated by means of a comparison of the AF-demagne-tization characteristics of their NRM with those of their ARM. The upper limit of paleointensity (F_p) is 0.049,0.060,0.089 and 0.010 Oe for ALHA77302,78040,77257 and 77005 respectively. F_p of ALHA77005 may represent the ambient magnetic field when this achondrite was remelted by severe shocks about 1.8 million years ago, whereas F_p-values of the other three achondrites may indicate the paleomagnetic field when these achondrites differentiated about 4.5 billion years ago. departmental bulletin paper Other/Unknown Material Antarc* Antarctic Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Antarctic
institution Open Polar
collection National Institute of Polar Research Repository, Japan
op_collection_id ftnipr
language English
description P(論文) The paleointensity of two eucrites (ALHA77302 and ALHA78040), a ureilite (ALHA77257) and an eucritic unique achondrite (ALHA77005) has been newly estimated by means of a comparison of the AF-demagne-tization characteristics of their NRM with those of their ARM. The upper limit of paleointensity (F_p) is 0.049,0.060,0.089 and 0.010 Oe for ALHA77302,78040,77257 and 77005 respectively. F_p of ALHA77005 may represent the ambient magnetic field when this achondrite was remelted by severe shocks about 1.8 million years ago, whereas F_p-values of the other three achondrites may indicate the paleomagnetic field when these achondrites differentiated about 4.5 billion years ago. departmental bulletin paper
author Nagata, Takesi
spellingShingle Nagata, Takesi
Paleomagnetism of Antarctic Achondrites
author_facet Nagata, Takesi
author_sort Nagata, Takesi
title Paleomagnetism of Antarctic Achondrites
title_short Paleomagnetism of Antarctic Achondrites
title_full Paleomagnetism of Antarctic Achondrites
title_fullStr Paleomagnetism of Antarctic Achondrites
title_full_unstemmed Paleomagnetism of Antarctic Achondrites
title_sort paleomagnetism of antarctic achondrites
publishDate 1980
url https://nipr.repo.nii.ac.jp/record/1103/files/KJ00000011629.pdf
geographic Antarctic
geographic_facet Antarctic
genre Antarc*
Antarctic
Memoirs of National Institute of Polar Research
Polar Research
genre_facet Antarc*
Antarctic
Memoirs of National Institute of Polar Research
Polar Research
op_relation Memoirs of National Institute of Polar Research. Special issue
17
233
242
AA00733561
https://nipr.repo.nii.ac.jp/record/1103/files/KJ00000011629.pdf
_version_ 1809823062278799360

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