主要由细碧岩、角斑岩及火山碎屑岩组成，其中有硅质岩、灰岩及碎屑岩夹层或凸镜体。
It mainly consists of spilite, keratophyre and volcanic clastics, intercalated with siliceous rocks, limestone and clastic rocks or lens.
细碧—角斑岩系一般分为细碧岩、角斑岩和石英角斑岩三类。
Spilite-keratophyre sequence is generally divided into spilite, keratophyre and quartz keratophyre.
并证实其原岩是与本区未变质的火山岩类相同的一套细碧-石英角斑岩系。
We con-firm that the original rocks are identical with the volcanic rocks in this area.
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