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P-T-t-d evolution of Brattnevet Peninsula, Larsemann Hills, East Antarctica
https://nipr.repo.nii.ac.jp/records/16875
https://nipr.repo.nii.ac.jp/records/168755b122325-03cb-4382-83d8-af9176f6d4fa
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2022-05-20 | |||||
タイトル | ||||||
タイトル | P-T-t-d evolution of Brattnevet Peninsula, Larsemann Hills, East Antarctica | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | P-T-t-d evolution of Brattnevet Peninsula, Larsemann Hills, East Antarctica | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Larsemann Hills | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | P-T-t-d path | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Pan-African orogeny | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Grenvillian orogeny | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | East Antarctica | |||||
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 | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Shah, M.Y.
× Shah, M.Y.× Sadiq, Mohammad× Ayemi, K.K.× Dharwadkar, A.× Roy, S.K. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Brattnevet Peninsula, Larsemann Hills, comprises metamorphosed acidic rocks, sedimentary rocks and basic igneous suite belonging to timespan of 920-478 Ma and have experienced three phases of deformation and metamorphism. The first and second phase of deformation gave rise to moderately plunging isoclinal and open to closed folds, respectively and the third phase resulted into broad warping. M1 prograde (amphibolite) and M2 peak (granulite) and M3 retrograde (decompression) events have been inferred. In pyroxene granulite, inclusion assemblage of quartz, biotite, plagioclase and ilmenite in hornblende correspond to the relict M1 amphibolite grade event associated with D1-D2 deformation events (occurred at ~920 Ma; 538–692 °C at ~6kb). However, the presence of enstatite, diopside, quartz, biotite, ilmenite and plagioclase in pyroxene granulite and sillimanite, biotite and almandine garnet and plagioclase in metapelite indicates granulite facies during M2 event (~530 Ma; 868–920 °C at ~6.7 kb). The retrograde M3 event (500-480 Ma; ~620 °C at ~5kb) is largely depicted in pyroxene granulite and metapelite by coronal and symplectite cooling textures. The study shows a clockwise P-T path and suggests the crustal evolution of Larsemann Hills area have commenced at the wanning stages of Grenvillian Orogeny and imprinted by the Pan-African orogenic event in the terrane. | |||||
書誌情報 |
en : Polar Science 巻 30, p. 100728, 発行日 2021-12 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.polar.2021.100728 | |||||
関連名称 | 10.1016/j.polar.2021.100728 |