Abstract
Detailed studies indicate that a typical island-arc magmatic zone exists in the Lianghe-Raofeng-Wuliba area of south Qinling. This is characterized by continental marginal andesite and bimodal volcanic rock association which was formed in a rift environment within an oceanic island-arc. The island-arc magmatic zone is the product of Devonian-Carboniferous oceanic crust subduction and rifting of Mianlue ancient oceanic basin. The presence of the island-arc magmatic zone suggests that the Mianxian-Lueyang suture zone had extended to the Bashan arcuate area. The Sunjiahe volcanic rock association of the Xixiang Group formed in a volcanic-arc setting which should have a close relationship with Mianlue suture zone.
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Lai, S., Zhang, G. & Yang, R. Identification of the island-arc magmatic zone in the Lianghe-Raofeng-Wuliba area, south Qinling and its tectonic significance. Sci. China Ser. D-Earth Sci. 43 (Suppl 1), 69–81 (2000). https://doi.org/10.1007/BF02911934
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DOI: https://doi.org/10.1007/BF02911934