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- W283810185 abstract "河南省卢氏县八宝山岩体位于华北克拉通南缘东秦岭西段，岩体呈筒状，可能为古火山机构岩颈相的超浅成侵入体，成矿组合上为独特的以铁为主的多金属矿化。八宝山岩体边缘相为钾长花岗斑岩、中心相为黑云母二长花岗斑岩。二者的LA-ICP—MS锆石u—Pb年龄非常一致，分别为146．6±1．6Ma和145．9±1．9Ma，说明他们可能是同期岩浆侵入作用分异的产物。钾长花岗斑岩和黑云母二长花岗斑岩锆石Hf同位素组成特征也非常相似，eHf（t）值分别为-27．55-20．71和-27．30-21．90，tDM2值分别为1．80—2．93Ga和2．03～2．92Ga，表明该岩体的源区物质以壳源物质为主。综合分析表明，八宝山岩体可能是扬子俯冲陆壳部分熔融的作物，并可能混入少量的太华群和熊耳群的物质，其形成的地球动力学背景可能为俯冲碰撞后的伸展环境。" @default.
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- W283810185 date "2013-01-01" @default.
- W283810185 modified "2023-09-23" @default.
- W283810185 title "河南卢氏八宝山花岗斑岩LA-ICP-MS锆石U-Pb年龄和Hf同位素组成特征" @default.
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