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    Zircon SHRIMP geochronology and geochemistry of TTG rocks in Sushui Complex from Zhongtiao Mountains with its geological implications [查看] TIANWei、LIUShuwen、LIUChaohui、YUShengqiang、LIQiugen、WANGYueran
    The tonalite-trondhjemite-granodiorite(TTG)rocks in Sushui Complex of Zhongtiao Block can be divided into two series according to their zircon U-Pb ages and geochemical characteristics:one is subduction-related(SR)and the other collision-related(CR).The SR TTG rocks,together with other late Archean island arc magmatism,were developed as a result of oceanic subduction betwween the Eastern and Western blocks in Late Archean;while the CR TTG rocks formed in a thickened crustal envionment,which was responding to the collision between the Eastern and Western blocks in Paleproterozoic.All these features support a model that the Zhongtiao Block is a part of the Trans-North China Orogen in the middle of the North China Craton
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