Zircon SIMS ages and chemi- cal compositions from North- ern Dabie Terrain: Its impli- cation for pyroxenite genesis
作者： Chen Daogong , Xia Qunke , E. Deloule , Cheng Hao , WU Yuanbao
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摘要: We present the results of a detailed micro-scale investigation zircons from pyroxenites, Daoshicong North- ern Dabie using combination SIMS and ICPMS. The measurements gave ages 134¸159 Ma. Its average (144.5r6.2) Ma is interpreted as best estimate pyroxenite intrusion. crystallization continued for quite long time underwent slow cooling. py- roxenites are products post-collision magmatism. REE pattern HREE-enriched, its HREE concentra- tions fall between magmatic metamorphic range gneissic area, which indicate in- volvement crust material in mantle source.
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