calc alkali basalt是什么意思

用法例句

In the study area there exist two types of closely associated active epicontinental mantle-derived intrusive assemblages, belonging to tholeiite series and calc-alkaline series respectively.

研究区内有两类密切共生的活动陆缘型幔源侵入岩组合，它们分属拉斑系列和钙碱系列。