Geochemical Features of the Porphyroclastic Lava in Chaihe Area Middle Daxing′anling Mountains

Metal Mine ›› 2012, Vol. 41 ›› Issue (07): 117-119.

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Geochemical Features of the Porphyroclastic Lava in Chaihe Area Middle Daxing′anling Mountains

Si Qiuliang^1,2，Wang Ende¹，Cui Tianri²，Li Wei²，Wu Xinwei²，Jiang Bin²，Li Linchuan²

1.College of Resources and Civil Engineering,Northeastern University；2.Shenyang Institute of Geology and Mineral Resources

Online:2012-07-15 Published:2012-07-26

Abstract

Abstract: The porphyroclastic lava in Chaihe, Daxinganling region was found during the 1:50 000 regional geological surveys.The porphyroclastic lava of Chaihe area is a special volcanic rock, Studies show that the rock belongs to rhyolites of the Pacific calcium alkali rock series.The REE distribution patterns show a LREE enrichment but a HREE depletion，with remarkable Eu deficiency in the lava.Rb, Th are relatively high and enriched while Ba, K are relatively low.

Key words: Porphyroclastic lava, Geochemistry, Middle Daxinganling mountains, Chaihe area

SI Qiu-Liang, WANG 恩De, CUI Tian-Ri, LI Wei, WU Xin-Wei, JIANG Bin, LI Lin-Chuan. Geochemical Features of the Porphyroclastic Lava in Chaihe Area Middle Daxing′anling Mountains[J]. Metal Mine, 2012, 41(07): 117-119.

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