alkaline volcanic rocks的意思|示意

Study has shown that the primary rocks of metamorphic supercrustal rocks are mainly calc-alkaline volcanic rocks.

研究表明，变质上壳岩原岩主要以钙碱性火山（熔）岩为主。

It is a product of volcanic rocks of the mesozoic era over-saturated with silica and rich in potash. it can be compared with geode natrolite that producedin alkaline basalt series of the cenozoic era.

它是中生代硅酸过饱和并富钾质的火山岩系的产物，其意义可与产于新生代碱性玄武岩系中的晶洞钠沸石对比。

The volcanic rocks in the study area all belong to sub alkaline series including olivine basalt, andesite and dacite, from basic to intermediate, and to acid.

研究区内火山岩从基性—中性—中酸性都有出露，包括橄榄玄武岩、安山岩和英安岩，且都属于非碱性系列。

The light - colored minerals of K -rich volcanic rocks in this area are alkaline feldspar, leucite and nepheline.

本区富钾火山岩中浅色矿物有碱性长石、白榴石和霞石。