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Low-grade Sandow Group metasediments of the Denman Glacier area (East Antarctica): Chemical composition, age and provenance from U–Pb detrital zircon data, with some palaeotectonic implications
https://nipr.repo.nii.ac.jp/records/16337
https://nipr.repo.nii.ac.jp/records/163373a8f3c5b-f749-4806-ae46-0001726f80a3
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2020-11-26 | |||||
タイトル | ||||||
タイトル | Low-grade Sandow Group metasediments of the Denman Glacier area (East Antarctica): Chemical composition, age and provenance from U–Pb detrital zircon data, with some palaeotectonic implications | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Low-grade Sandow Group metasediments of the Denman Glacier area (East Antarctica): Chemical composition, age and provenance from U–Pb detrital zircon data, with some palaeotectonic implications | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Sedimentation | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Detrital zircon age | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Neoproterozoic | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Pull-apart basin | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | 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 |
Mikhalsky, E.V.
× Mikhalsky, E.V.× Tkacheva, D.A.× Skublov, S.G.× Leitchenkov, G.L.× Rodionov, N.V.× Kapitonov, I.N.× Kunakkuzin, E.L. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The Sandow Group in the Denman Glacier area consists of low-grade supracrustal (post-cratonic) strata. Such rocks are scarce and poorly studied in East Antarctica, but are significant for a better understanding of the geological history and tectonic evolution of the Precambrian supercontinents. We report U–Pb (LA-ICP-MS) detrital zircon ages which mostly fall into two groups of ca 1350−900 Ma and ca 1800−1500 Ma, which correspond to those of crystalline rocks exposed in the western Australo-Antarctica. The youngest zircons with magmatic zoning yield ages of ca 950–900 Ma which define the maximum age of sedimentation. Chemical and neodymium isotopic compositions of the Sandow Group rocks indicate derivation from a Proterozoic largely granitic source region. High-Ti mafic volcanic activity accompanied sedimentation, and therefore the Sandow Group should be considered a volcanic-sedimentary succession. The Sandow Group was presumably accumulated in a continental (pull-apart?) basin formed in the Neoproterozoic in relation to proto-Darling Fault system activity with its continuation into Antarctica. The Sandow Group may have its correlatives in Western Australia where sedimentary successions (e.g., Moora and Badgeradda Groups) occur along the proto-Darling Fault system. | |||||
書誌情報 |
en : Polar Science 巻 26, p. 100587, 発行日 2020-12 |
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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.2020.100587 | |||||
関連名称 | 10.1016/j.polar.2020.100587 |