砕屑性クロムスピネルの化学組成によりかんらん岩の岩石学性質を探る: フィリピン，ルソン島北部Ilocos Norteオフィオライトの例

• 荒井 章司

  Department of Earth Sciences, Kanazawa University

• 角島 和之

  Department of Earth Sciences, Kanazawa University

• MANJOORSA Mustansir V.

  National Institute of Geological Sciences, University of the Philippines

• DAVID Carlos P.

  National Institute of Geological Sciences, University of the Philippines

• 喜田 恵美

  Department of Earth Sciences, Kanazawa University

書誌事項

タイトル別名

• Chemistry of detrital chromian spinels as an insight into petrological characteristics of their source peridotites: an example from the Ilocos Norte ophiolite, northern Luzon, Philippines.
• Chemistry of detrital chromian spinels

抄録

Chemistry of detrital chromian spinels provides us useful information on the petrological characteristics of their source ultramafic and related rocks. This method is applied to the Ilocos Norte ophiolite, north of Laoag City, northern Luzon, Philippines, of which petrological characteristics have not been well known. Cr# (=Cr/[Cr+Al] atomic ratio) of the detrital spinels from one of the rivers running through the Ilocos Norte ophiolite ranges from 0.4 to 0.8, possibly indicating moderately to highly depleted harzburgites for their source rocks. This further indicates a supra-subduction zone origin for the Ilocos Norte ophiolite. The spinel chemistry demonstrates that the Ilocos Norte peridotites are different from the Coto and Acoje peridotites of the Zambales ophiolite, western Luzon.

収録刊行物

• 岩鉱

  岩鉱 92 (4), 137-141, 1997

  一般社団法人　日本鉱物科学会

キーワード

• Detrital chromian spinel
• Ilocos Norte ophiolite
• Depleted harzburgite
• Supra-subduction zone
• Luzon.

詳細情報

• CRID: 1390001206234685952
• NII論文ID: 10002088763
• NII書誌ID: AN10047992
• DOI: 10.2465/ganko.92.137
• COI: 1:CAS:528:DyaK2sXjvVektbs%3D
• ISSN: 18813275
• ISSN: 09149783
• NDL書誌ID: 4226699
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4226699
• 本文言語コード: en
• データソース種別:
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  • NDL
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