The rock body in Tongshan is a composite one consisted of quartz diorite,granodiorite and adamellite,all of which were of the same magma source and epoch.
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释义
铜山岩体是在同一岩浆源,同一时期内由岩浆演化形成的石英闪长岩、花岗闪长岩和二长花岗岩组成的复式岩体。
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