Mesozoic volcanic rocks developed in the Da Hinggan Mts., Northeastern China are characterized by highK, highalkali trachytic calcalkaline seri es and ev olu ted from acid to intermediatebasic with the progressive time. Their REE, trace element features and isotopic Sr, Nd compositions distinctly reveal two magma sources,a l ower crust and a relatively undepleted or primary mantle one,indicating that pet rogenesis of the Mesozoic volcanic rocks in the area is ass o ciated with crustmantle interaction resulted from upwelling of deep intraconti nental asthenoli t h.In addition, taking into consideration the migration of volcanic cent er and characteristics of the movement between neighboring continental and oce anic plates in the e ast,it is proposed that there is no direct relationship between Mes ozoic volcanism in the Da Hinggan Mts. and subduction of the oceanic plate.
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邵济安,赵国龙,王 忠,韩庆军.1999.大兴安岭中生代火山活动构造背景[J].地质论评,45(7):422-430,[DOI]. Shao Ji′an, Zhao Guolong, Wang Zhong, Han Qingjun.1999. Tectonic Setting of Mesozoic Volcanism in Da Hinggan Mountains, Northeastern China[J]. Geological Review,45(7):422-430.