書誌事項
- タイトル別名
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- Magma process of the Kibe Granite (One of the Younger granitoids) in the Yanai area of the Ryoke Belt, southwest Japan
- リョウケタイ ヤナイ チイキ シン キ ハナオカガン(モクブ ハナオカガン)ノ マグマ カテイ
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Cretaceous granitic rocks in the Chugoku district, Southwest Japan arc, are divided into the following three groups; Older Ryoke granitoids, Younger Ryoke granitoids and San'yo granites. The Kibe Granite, a representative Younger Ryoke granitoids in the Yanai area, Yamaguchi Prefecture, occurs as an elliptic outcrop associated with a coeval quartz diorite, and intruded the high-grade Ryoke metamorphic rocks. The Kibe Granite is dominated by homogeneous biotite-granite that contain euhedral alkali-feldspar phenocrysts. These rocks also contain local micro-magmatic enclaves and have migmatitic structures in contact zones with the pelitic gneisses in the marginal parts of the granite. The mixing and mingling structures are developed at the contact between the granite and quartz diorite. The major and trace element variations of the Kibe Granite can be explained by a subtraction of plagioclase together with minor biotite and alkali-feldspar from a parental magma. The Kibe Granite was formed through the following processes: assimilation of the pelitic gneisses, magma mixing with the quartz diorite and fractional crystallization of a parental magma. These processes took place at the exhumation stage of the Ryoke metamorphism following its isothermal decompression path.<br>
収録刊行物
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- 岩石鉱物科学
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岩石鉱物科学 42 (4), 159-173, 2013
一般社団法人 日本鉱物科学会
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詳細情報 詳細情報について
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- CRID
- 1390001206525301376
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- NII論文ID
- 10031191336
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- NII書誌ID
- AA1146088X
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- COI
- 1:CAS:528:DC%2BC2cXivFOmu7c%3D
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- ISSN
- 13497979
- 1345630X
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- NDL書誌ID
- 024897096
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可
