塔里木盆地二叠纪玄武岩的地球化学特征及其与峨眉山大火成岩省的对比

余星, 陈汉林, 杨树锋, 厉子龙, 王清华, 林秀斌, 徐岩, 罗俊成. 塔里木盆地二叠纪玄武岩的地球化学特征及其与峨眉山大火成岩省的对比[J]. 岩石学报, 2009, 25(6): 1492-1498.
引用本文: 余星, 陈汉林, 杨树锋, 厉子龙, 王清华, 林秀斌, 徐岩, 罗俊成. 塔里木盆地二叠纪玄武岩的地球化学特征及其与峨眉山大火成岩省的对比[J]. 岩石学报, 2009, 25(6): 1492-1498.
YU Xing, CHEN HanLin, YANG ShuFeng, LI ZiLong, WANG QingHua, LIN XiuBin, XU Yan, LUO JunCheng. Geochemical features of Permian basalts in Tarim Basin and compared with Emeishan LIP[J]. Acta Petrologica Sinica, 2009, 25(6): 1492-1498.
Citation: YU Xing, CHEN HanLin, YANG ShuFeng, LI ZiLong, WANG QingHua, LIN XiuBin, XU Yan, LUO JunCheng. Geochemical features of Permian basalts in Tarim Basin and compared with Emeishan LIP[J]. Acta Petrologica Sinica, 2009, 25(6): 1492-1498.

塔里木盆地二叠纪玄武岩的地球化学特征及其与峨眉山大火成岩省的对比

  • 基金项目:

    国家自然科学基金(40472120)和国家重大基础项目(2007CB411303)

Geochemical features of Permian basalts in Tarim Basin and compared with Emeishan LIP

  • 中国西部地区发育了塔里木大火成岩省和峨眉山大火成岩省,分别形成于280Ma左右和258~260Ma。对比两个大火成岩省的玄武岩的地球化学特征,发现塔里木玄武岩的岩石地球化学特征与峨眉山玄武岩相似,Fe 2O3=15.29%~17.97%,大于10%,比MORB富铁,指示其深源以及地幔柱源特征,为典型的溢流玄武岩。稀土元素比值显示其落在由石榴石二辉橄榄岩组成的原始地幔熔融线上,表明该玄武岩是在厚的岩石圈下由异常热的地幔经低部分熔融形成的。微量元素特征比值分析,揭示了塔里木玄武质岩浆在上升过程中受到了一定程度的地壳混染。塔里木大火成岩省和峨眉山大火成岩省一样,可能起源同一个来自于核幔边界的超级地幔柱,它们很可能是塔里木板块和扬子板块在二叠纪北向漂移过程中先后穿越同一个超级地幔柱的结果。
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出版历程
收稿日期:  2007-12-14
修回日期:  2008-03-10
刊出日期:  2009-06-30

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