書誌事項
- タイトル別名
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- Petrography and Geochemistry of the mantle xenoliths: Implications for lithospheric mantle beneath the Japan arcs
- かんらん岩捕獲岩石の記載岩石化学的性質:日本列島下のリソスフェリック・マントルの特徴
- カンランガン ホカク ガンセキ ノ キサイ ガンセキ カガクテキ セイシツ ニホン レットウ カ ノ リソスフェリック マントル ノ トクチョウ
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Recent developments in instrumentation for in situ trace element analysis of peridotite minerals give us valuable data set of petrological and geochemical insights of the upper mantle. Here, we summarize petrographical, petrological and geochemical characteristics of mantle xenoliths from the Northeastern and Southwestern Japan arcs. They have clear correlations between microtexture and mineral compositions in terms of both major and trace elements. That suggests that influx-assisted melt extraction occurs simultaneously with deformation/recrystalization in the upper mantle. Their characteristics of trace-elements in clinopyroxene are distinguished from those of abyssal peridotite and peridotite xenoliths from continental regions. The geochemistry of Japan arcs’ clinopyroxenes have characteristics of arc-type mantle source; i.e., low light rare earth element (LREE) and high field strength element (HFSE; Ti, Zr and so on), rather high heavy rare earth (HREE) relative to LREE elements and Sr concentrations. They also have a rather constant Ti/Zr ratio, variable REE patterns, and relatively low LREE/HREE ratios. The simple melt extraction model can not explain these characteristics. These features are due to metasomatism, which is different from carbonatite metasomatism.
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 34 (4), 143-158, 2005
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
- 1390001206526290304
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- NII論文ID
- 10015605987
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- NII書誌ID
- AA1146088X
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- COI
- 1:CAS:528:DC%2BD2MXhtFKkur7I
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- ISSN
- 13497979
- 1345630X
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- NDL書誌ID
- 7470970
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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
- IRDB
- NDL
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- 抄録ライセンスフラグ
- 使用不可