The formation of tufa in huanglong, Sichuan
四川黄龙钙华的形成

The odd shapes that tufa take can sometimes resemble coral.
凝灰岩有时可以具有像珊瑚那样的奇怪形状。

The active components extracted from Roots of A. tufa Planch
山梨猕猴桃根提取物

In petrographic terms, this stone is defined as volcanic tufa.
地质学上，此石材属于火山凝灰岩。

The study of aeration effect on Mechanism of fluvial tufa deposit
河成石灰华成因 掺气效应研究

The uncanny tufa formations take on a golden appearance at sunset.
离奇得凝灰岩地层在日落时所呈现出得金黄色外观。

Spires of limestone tufa rise from the shores of California's Mono Lake.
图为石灰石泉华柱耸立在加利福尼亚的莫诺湖之滨。

A preliminary study on the diversity of the tufa algae in Xiaoqikong area, Libo
荔波小七孔钙华藻类多样性初步研究

Fossil plants from calcareous tufa and palaeoenvironments in ruoqiang, Xinjiang
新疆若羌石灰华中的植物化石及古环境

THE PRELIMINARY STUDY ON THE DIVERSITY OF THE WATERFALL CALCAREOUS TUFA ALGAE IN MALING RIVER GORGE, XINGYI
兴义马岭河峡谷瀑华藻类多样性初步研究