Study has shown that the primaryrocks 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。
2
The primaryrocks are a series of intermediate-acid volcanics and carbonate formed in environment of rift valley.
原岩为一套在裂谷环境下形成的中酸性火山岩及碳酸盐岩。矿体的容矿岩石是镁质大理岩。
3
The primaryrocks include the various sodium-rich volcanic rocks and the sedimentary rocks with sodium-rich volcanic materials which are well developed in the North Qilian eugeosyncline area.