tuff

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

热储由中生代燕山期花岗斑岩、凝灰岩组成.

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

凝灰岩是一种可预见的新型非金属矿产资源.

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

山体主要由流纹岩和凝灰岩构成, 局部有花岗岩.

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

其中的酸性凝灰岩段金元素平均值110.

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This kind of rock is called tuff.

这里的岩质呢是凝灰岩.

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

主要为玄武岩和凝灰岩, 其次为蚀变玄武岩和安山岩.

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

矿产资源丰富, 有花岗石 、 凝灰岩 、 大理石等15种 非金属 矿和金属矿.

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

很快他依然带着勇气与坚定在2001年再次回归.

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

本文系统讨论了黔西南凝灰岩型金矿的层控特征.

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