volcanicity

1.There are volcanicity and kinds of metalliferous minerals formed by rush of current on the Mars,which is superior to the metallic element spread in the terram on the Moon.

火星上有火山和水流冲击形成的各种金属，比散布在土石中的月球金属元素越得多。

2.Volcanicity was violent during the Early Carboniferous in Santanghu region.The volcanic rocks consist of basalts,andesites and dacite liparite,with andesites playing the main part.

三塘湖地区早石炭世火山烈，发育以安山岩类为主的玄武岩、安山岩、英安流纹岩的岩石组合。