熊耳群研究四十年

本文全面回顾四十年来熊耳群火山岩的研究历史综述前人成果，详细分析了现存在的问题，对于今后应着力开展的工作提出了一些看法，笔者认为，现有认识矛盾的关键问题是，熊耳群形成矢折的裂谷构造环境，为什么体现岛弧的地球化学特征（亏损高场强元素，富集大离子亲石元素和轻稀土元素）？今后熊群火山岩研究的重要问题有：鉴别岩浆源区性质和可能可经的过程，揭示其富钾并体同出岛弧型火山岩地球化学特征的原因，确定是否有冲带组分

Review on the Study of Xionger Group in past 40 years

In this paper,the authors have looked back on the study of Xionger Group volcanics,summed up the achievements in past 40 years,and analysed the problems uhich have not been soleved the authors believe that the key to controversies extant views is that the xionger group volcanics formed in setting of rift died away, but it reflects the geochemical affinity of island arc volcanics i e ,depletion in high fiele strenght elements(HFSE)and enrichment in large ion lithophile(LILE) There are some inportant problems to be solved in study to come such as,the nature of mantle sources,the process of magma evolution,reason of enrichment in potassium and having island arc geochemical affinities,whether having added the subducttion zone chemical component(SZC)or not,and the time lire of this process