tuff breccia

A great mumber of melt inclusions are there in the quartz phenocrysts. The ore bodies of Emei pyrophyllite are located in rhyolitic crys-tal fragment tuff, ignimbrite and volcanic breccia ( agglomerate)-bearing tuff.

石英晶屑内熔融包裹体发育。峨嵋矿区矿体赋存于流纹质晶屑凝灰岩、熔结凝灰岩、含火山角砾（集块）凝灰岩中。

Experimental study on longitudinal wave characteristics of tuff, granite and breccia after high temperature

三种岩石高温后纵波波速特性的试验研究

There are Cenozoic continental intermediate and acid volcanic rocks in the Tianshui area, western Qinling. The rocks are mainly composed of rhyolite, parts of rhyolitic ignimbrite ( breccia tuff), a little amount of breccia tuff and volcanic agglomerate.

西秦岭甘肃天水地区分布的新生代陆相中酸性火山岩，主要由流纹岩、部分流纹质熔结（角砾）凝灰岩及少量角砾凝灰岩、火山集块岩等组成。

The thrid part are tuff, ferruginous dolomite, crystal tuff and volcanic breccia.

第三段以凝灰岩、铁质白云岩、晶屑凝灰岩、火山角砾岩为主。

Testing Study on mechanical properties of tuff, granite and breccia after high temperatures

3种岩石高温后力学性质的试验研究

Sedimentary pyroclastic rocks are mainly sedimentary tuff and sedimentary volcanic breccia.

沉火山碎屑岩，包括沉凝灰岩和沉火山角砾岩。

The rock types include rhyolite, dacite and sedimentary volcaniclastic rocks, among which the lava tuff breccia was newly discovered in the 1 ∶ 50 000 region.

岩石类型为流纹岩、英安岩和沉火山碎屑岩，其中的熔结角砾凝灰岩是本次1∶5万区调中的新发现。