火山集块岩
- 网络volcanic agglomerate
火山集块岩-
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。
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 .
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在剖面上，与变质玄武岩整合接触的巨厚的变砂岩和大量出现的火山角砾岩和集块岩是浅海环境的标志；
Thick metasandstone and a lot of volcanic breccia and agglomerate in section indicate a shallow marine setting .