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基性熔岩 [jī xìng róng yán]
[岩] basic lava
- 同时期的火山活动性是由中性熔岩与凝灰岩呈基性而体现出来的。
Contemporaneous volcanic activity is represented by basic to intermediate lava and tuff. - 彭县铜矿床含矿火山岩由各类变质火山碎屑岩及中基性熔岩所组成。
Pengxian copper deposit is hosted by metamorphosed pyroclastic rock and basic intermediate lava. - 彭县铜矿床含矿火山岩由各类变质火山碎屑岩及中基性熔岩所组成。本文探讨了各类含矿火山岩微量元素及稀土元素地球化学特征，并初步揭示了合矿火山岩的成因。
Pengxian copper deposit is hosted by metamorphosed pyroclastic rock and basic intermediate lava. This paper deals with minor element and REE geochemistry and genesis of the host rock.
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