tuff

Its heat reservoir is composed of Yanshanian granite - porphyry and tuff of Mesozoic.

熱儲由中生代燕山期花崗斑巖、凝灰巖組成.

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The tuff is a kind of predictable and new - type nonmetallic minerals resource.

凝灰巖是一種可預見的新型非金屬礦產資源.

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Mountain mainly by rhyolite and tuff composition, there are local granite.

山體主要由流紋巖和凝灰巖構成, 局部有花崗巖.

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The acidic tuff section owns gold element with average content of 110.

其中的酸性凝灰巖段金元素平均值110.

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This kind of rock is called tuff.

這里的巖質呢是凝灰巖.

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Mainly is basalt and tuff, secondly become for the alteration basalt and andesite.

主要為玄武巖和凝灰巖, 其次為蝕變玄武巖和安山巖.

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Rich mineral resources, granite, tuff, 15 kinds of marble, and other non - metallic mineral and metal mining.

礦產資源豐富, 有花崗石 、 凝灰巖 、 大理石等15種 非金屬 礦和金屬礦.

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None the less, quickly he came back tuff in 2001 with courage and determination.

很快他依然帶著勇氣與堅定在2001年再次回歸.

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A systematic discussion of stratabound feature of tuff - type gold deposits, southwest Guizhou is conducted.

本文系統討論了黔西南凝灰巖型金礦的層控特征.

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