WEKO3
アイテム
Short note on ultramafic granulites in the Ongul Islands area, East Antarctica
https://nipr.repo.nii.ac.jp/records/2015
https://nipr.repo.nii.ac.jp/records/2015071e8624-8487-4164-ad88-dac8958b6ae1
名前 / ファイル | ライセンス | アクション |
---|---|---|
![]() |
Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||||
---|---|---|---|---|---|---|---|---|
公開日 | 1986-09-01 | |||||||
タイトル | ||||||||
言語 | en | |||||||
タイトル | Short note on ultramafic granulites in the Ongul Islands area, East Antarctica | |||||||
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) |
Suzuki, Morihisa
× Suzuki, Morihisa
|
|||||||
著者所属(英) | ||||||||
en | ||||||||
Institute of Geology and Mineralogy, Faculty of Science, Hiroshima University | ||||||||
抄録(英) | ||||||||
内容記述タイプ | Other | |||||||
内容記述 | Ultramafic granulites in the East and West Ongul Islands area are grouped into two types, A and B. One of the fundamental criteria of the grouping is that type A does not yield plagioclase and type B does. Type A is characterized by the abundance of orthopyroxene and clinopyroxene and by the lack of plagioclase and garnet. It occasionally yields olivine. Type B is characterized by the presence of plagioclase and/or garnet and by the poverty in pyroxenes. In common cases, type A tends to occur as massive isolated blocks or pods in the surrounding gneisses, while type B as concordant sheets or layers showing a distinctly foliated structure. Between these two types, chemical characteristics of main constituent minerals such as orthopyroxene, clinopyroxene and hornblende are different from each other. Those in type A are comparatively more magnesian and less aluminous. Metamorphic temperature estimated from the pairs of orthopyroxene and clinopyroxene of both types is as high as around 800℃. Pressure condition is calculated based upon the associations of garnet, pyroxenes and plagioclase of type B to give the values around 7.5kb. The essential difference between the two types is inferred to reflect the difference in petrological characters of original rocks. | |||||||
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 43, p. 85-100, 発行日 1986-09 |