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Y-791088, which consists of numerous coarse-grained relict phases (40%) and euhedral fine-grained minerals solidified from the shock melt (60%), experienced incomplete melting; a quiescent melt is indicated by the existence of abundant relict phases, pseudomorphed chondrules, and two types of glass. LAP 02240, which consists of small amounts of coarse-grained relict phases (10%) and fine-grained minerals (90%), experienced near-complete melting; a rapidly cooled mobilized melt is indicated by the homogeneous compositions of glass and opaque veins.The homogeneous compositions of relict olivines indicate that the precursors of both chondrites were equilibrated H chondrites. The melting features of Y-791088 and LAP 02240 are very similar to those of Y-790964 (LL) and the fine-grained lithology of Y-790519 (LL), respectively. These two types of shock-melted ordinary chondrites possibly formed in situ during dike formation. The quiescent melt is thought to have originated from the injection of shock-heated chondrite blocks into mobilized melt. These two types of melting could have occurred during dike formation on the H chondrite parent body. The textures of the two types of shock melts were not simply affected by the degree of shock melting: they were also controlled by the degree of shear stress.", "subitem_description_type": "Abstract"}]}, "item_10001_description_6": {"attribute_name": "内容記述", "attribute_value_mlt": [{"subitem_description": "異なる特徴を持つHコンドライトの衝撃溶融岩(Y-791088およびLAP 02240)を、岩石・鉱物学的視点から比較し、形成環境を検討した。Y-791088は,とけ残り物質を約40%含み,コンドルールの形態を保持している。一方、LAP 02240は約10%のとけ残り物質を含み、コンドルールは変形している。同様の特徴はLLコンドライトの衝撃溶融岩である、Y-790964およびY-790519で観察される。Y-790519では、2つの衝撃溶融岩相が共存しており、両岩相が同時に形成したことを示している。異なる衝撃溶融岩の特徴は、溶融度の違いのみではなく、加わった剪断応力の差を反映していると考えられる。", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "国立極地研究所"}]}, "item_10001_relation_12": {"attribute_name": "論文ID(NAID)", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "110007873827", "subitem_relation_type_select": "NAID"}}]}, "item_10001_relation_14": 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Petrology and mineralogy of the shock-melted H chondrites Yamato-791088 and LaPaz Ice Field 02240
https://nipr.repo.nii.ac.jp/records/10200
https://nipr.repo.nii.ac.jp/records/10200d4e2c8d8-91d2-4cc3-82e1-cc005078bd32
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2014-10-16 | |||||
タイトル | ||||||
タイトル | Petrology and mineralogy of the shock-melted H chondrites Yamato-791088 and LaPaz Ice Field 02240 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Petrology and mineralogy of the shock-melted H chondrites Yamato-791088 and LaPaz Ice Field 02240 | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Y-791088 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | LAP 02240 | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Ordinary chondrite | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Shock melt | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Petrogenesis | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Y-791088 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | LAP 02240 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Ordinary chondrite | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Shock melt | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Petrogenesis | |||||
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 |
Takafumi, Niihara
× Takafumi, Niihara× Naoya, Imae× Keiji, Misawa× Hideyasu, Kojima× Takafumi, Niihara× Naoya, Imae× Keiji, Misawa× Hideyasu, Kojima |
|||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We studied the petrology and mineralogy of two types of shock-melted H chondrites: Yamato (Y)-791088 and LaPaz Ice Field (LAP) 02240. Y-791088, which consists of numerous coarse-grained relict phases (40%) and euhedral fine-grained minerals solidified from the shock melt (60%), experienced incomplete melting; a quiescent melt is indicated by the existence of abundant relict phases, pseudomorphed chondrules, and two types of glass. LAP 02240, which consists of small amounts of coarse-grained relict phases (10%) and fine-grained minerals (90%), experienced near-complete melting; a rapidly cooled mobilized melt is indicated by the homogeneous compositions of glass and opaque veins.The homogeneous compositions of relict olivines indicate that the precursors of both chondrites were equilibrated H chondrites. The melting features of Y-791088 and LAP 02240 are very similar to those of Y-790964 (LL) and the fine-grained lithology of Y-790519 (LL), respectively. These two types of shock-melted ordinary chondrites possibly formed in situ during dike formation. The quiescent melt is thought to have originated from the injection of shock-heated chondrite blocks into mobilized melt. These two types of melting could have occurred during dike formation on the H chondrite parent body. The textures of the two types of shock melts were not simply affected by the degree of shock melting: they were also controlled by the degree of shear stress. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 異なる特徴を持つHコンドライトの衝撃溶融岩(Y-791088およびLAP 02240)を、岩石・鉱物学的視点から比較し、形成環境を検討した。Y-791088は,とけ残り物質を約40%含み,コンドルールの形態を保持している。一方、LAP 02240は約10%のとけ残り物質を含み、コンドルールは変形している。同様の特徴はLLコンドライトの衝撃溶融岩である、Y-790964およびY-790519で観察される。Y-790519では、2つの衝撃溶融岩相が共存しており、両岩相が同時に形成したことを示している。異なる衝撃溶融岩の特徴は、溶融度の違いのみではなく、加わった剪断応力の差を反映していると考えられる。 | |||||
書誌情報 |
Polar science en : Polar science 巻 4, 号 4, p. 558-573, 発行日 2011-01 |
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出版者 | ||||||
出版者 | 国立極地研究所 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12240481 | |||||
論文ID(NAID) | ||||||
識別子タイプ | NAID | |||||
関連識別子 | 110007873827 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://doi.org/10.1016/j.polar.2010.08.003 | |||||
関連名称 | 10.1016/j.polar.2010.08.003 |