WEKO3
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Natural remanent magnetizations of chondrules, metallic grains and matrix of an Antarctic chondrite, ALH-769
https://nipr.repo.nii.ac.jp/records/1224
https://nipr.repo.nii.ac.jp/records/1224ea0d66ad-caff-43d7-afaa-91f0481add95
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00000011750 (2.4 MB)
|
Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 1981-12-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Natural remanent magnetizations of chondrules, metallic grains and matrix of an Antarctic chondrite, ALH-769 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Funaki, Minoru
× Funaki, Minoru× Nagata, Takesi× Momose, Kan-ichi |
|||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
Shinsyu University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | For examining characteristics of NRM, 3 bulk specimens, 9 individual matrix materials, 12 large metallic grains and 12 individual chondrules were picked from the ALH-769 (L6) chondrite and their orientations were determined with respect to the bulk chondrite. NRM of the bulk chondrite is unstable against AF demagnetization. NRM of the matrix materials is stable up to 140 Oe peak, but its stability becomes worse for alternating fields larger than 140 Oe peak. NRM directions of the matrix materials are clustered within a hemisphere, suggesting that the presence of a magnetic field partially influenced the NRM acquisition. NRM of the metallic grains is unstable and its direction is widely scattered. NRM of the chondrules is fairly stable against AF demagnetization and thermal demagnetization. However, the direction of NRM is widely scattered within the bulk chondrite. The result of thermal demagnetization of the chondrules suggests that NRM of individual chondrules was acquired as TRM while they were making precessional motions during their cooling in the presence of a magnetic field before their assembling into the mother chondrite. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 20, p. 300-315, 発行日 1981-12 |