碱性橄榄玄武岩系列(alkalic olivine basalt series)又称碱性玄武岩系列(alkalic basalt series)。为Na质系列。夏威夷洋岛是产生这一系列的典型地区,由夏威夷岩、橄榄粗安岩、歪长粗面岩构成。在SiO2 (Na2O+K2O)图上位于亚碱性系列的上方,即在SiO2含量相同的条件下,比亚碱性系列富碱(Na2O+K2O)
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 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.
岩石类型包括杏仁状玄武岩、粗玄岩、块状玄武岩、橄榄玄武岩和安山玄武岩,属碱性玄武岩系列。
The rock types include amygdaloidal basalt, dolerite, massive basalt, olivine basalt and andesite-basalt, which belong to the alkali basalt series.
郯庐断裂带中段的新生代火山岩以碱性系列的碱性橄榄玄武岩、碧玄岩和霞石岩为主,其中又以钠质亚系的岩石为主。
According to the main rock-forming minerals in them, the Cenozoic volcanic rocks are mainly alkali olivine basalt, basanite and nephelinite.
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