Abstract：The Hadayang tectonic melange is outcropped in the Nenjiang-Heihe tectonic belt. According to its regional geological setting and rock geological and geochemical characteristics, the tectonic melange is divided into three parts:matrix, autochthonous blocks and allochthonous blocks. The matrix is dominated by epidote-biotite-chlorite tectonic schist. The autochthonous blocks are composed of epidote-chlorite-biotite tectonic schist and possible conglomerates from outer slope of trench. The allochthonous blocks are mainly hornblendite, hybrid diorite and meta-acidic volcanic rocks. The lithogeochemical characteristics show that the hornblendite and hybrid diorite were formed in a marginal ocean expansion environment related to subduction, while the meta-acidic volcanic rocks have the characteristics of island arc calc-alkaline volcanic rocks. The characteristics above indicate that the Hadayang tectonic melange is related to the subduction-collision of plates. Combined with the feature that glaucophane appears in the Early Carboniferous meta-acidic volcanic rocks of Hongsanliang area and Paleozoic strata outcropped along the Hongsanliang-Hadayang-Yikete area are fault contact relationship between each other, the authors conclude that there is a tectonic melange belt of late Early Carboniferous along this line. The discovery of Hadayang tectonic melange belt is of important significance for understanding the NenjiangHeihe tectonic belt and its structure.
付俊, 汪岩, 那福超, 杨帆, 张广宇, 刘英才, 康庄. 内蒙古莫力达瓦旗哈达阳构造混杂岩地质特征及发现的意义[J]. 地质与资源, 2015, 24(5): 408-413.
FU Jun-yu, WANG yan, NA Fu-chao, YANG Fan, ZHANG Guang-yu, LIU Yin-cai, KANG Zhuang. GEOLOGY OF THE HADAYANG TECTONIC MELANGE IN INNER MONGOLIA:Discovery significance. GEOLOGY AND RESOURCES, 2015, 24(5): 408-413.
2015, Vol. 24 
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