The island`s most famous feature (it even got airtime in the movie, Master and Commander) is actually an eroded lava formation called a tuff cone.
岛上。岛上最著名的特色是一种侵蚀熔岩的形成物，称为凝灰岩锥。
The island's most famous feature (it even got airtime in the movie, Master and Commander) is actually an eroded lava formation called a tuff cone.
岛上最有名的特征，其实是一种侵蚀熔岩形成所谓的凝灰岩锥。
A unusual mineralizing types, native copper aggregate associated closely with asphalt and organic carbon, were discovered in tuff and the vesiculate lava at the top and bottom of the.
过去已知在峨眉山玄武岩顶部气孔状熔岩中含有杏仁状自然铜，但很少构成连续的铜矿体。
The rock types include rhyolite, dacite and sedimentary volcaniclastic rocks, among which the lava tuff breccia was newly discovered in the 1∶ 50000 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。
The results indicate that the major rocks are lava which includes basalt and andesite, pyroclastics and pyroclastic sedimentary which includes volcanic breccia, tuff and sedimentary tuff.
熔岩以玄武岩、安山岩为主，火山碎屑岩与沉积火山碎屑岩主要为火山角砾岩、凝灰岩和沉凝灰岩。
We can see copper-bearing asphalt amygdaloidales in the basalt lava and stockwork of native copper in the carbon-rich tuff. There area so much carbon in the ores that people only can see the native copper aggregate after splitting and polishing the ores.
最近，在该熔岩层上下的凝灰岩中鉴别出难识别矿化类型，即与沥青和有机质碳紧密伴生的富铜矿石，甚至在气孔状熔岩中发现呈杏仁体含铜沥青，因而可能构成大规模矿化。
The porosity and permeability of rhyolite and self-fused tuff in lava are generally higher, while they are lower in basalt, andesite, trachyte and tuff.
火山岩中流纹岩和熔结凝灰岩的孔隙度、渗透率一般较高，玄武岩、安山岩、粗面岩和凝灰岩的孔隙度、渗透率略低。
In the southeast Jiangxi volcanic terrain are mainly developed Middle-Late Jurassic mildly acidic volcanic clastic rocks and volcanic lava, of which the most widely distributed are the explosive-effluent rhyolitic crystal fragment tuff lava;
赣东南火山岩区主要发育侏罗纪中、晚世中酸性火山碎屑岩&火山熔岩，其中以爆溢相产出的流纹质晶屑凝灰熔岩分布最广；
The rock types include rhyolite, dacite and sedimentary volcaniclastic rocks, among which the lava tuff breccia was newly discovered in the 1 ∶ 50000 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。