n. metagabbro
The Guanzizhen ophiolite in the Tianshui area, located in the northern margin of the western Qinling, is composed of metamorphic basic volcanic rock and massive rocks such as serpentinite, metapyroxenite and metagabbro.
西秦岭北缘天水地区关子镇蛇绿岩由变质基性火山岩(斜长角闪片岩)和蛇纹岩、变辉石岩、变辉长岩等构造岩块组成。
参考来源 - 西秦岭北缘关子镇蛇绿岩的形成时代:来自辉长岩中LA·2,447,543篇论文数据,部分数据来源于NoteExpress
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