MESOZOIC COLLISION TECTONICS IN EASTERN JILIN AND HEILONGJIANG PROVINCES,NORTHEAST CHINA
Liu Xifanwen;Shen Ninhua;Ge Xiaohong(Dep.of Earth Sei.)(Dep.of Gepophysies)(Dep.of Earth Sci.)
Two Kinds of collision tectonics exist in the eastern parts of Jilin andHeilongjiang provinces in northeastern China.The north-west by west trendingGudonghe Fuerhe collision zone is produced by collision and imbrication between theNorth China Black(NCB)and the Bulieya Jiamusi Block(BJB),while the north south trending fold thrust belts are produced by continuous compression of accretedterranes on the continental margin. The Gudonghe Fuerhe collision zone is indicated byearly tectonic complex and superimposing lndosinian ductile shear zone as well as thrustfaults, The north south trending fold thrust belts are developed on the previous In-dosinian fold zone and mylonite. The two kinds of tectonics mainly developed in lateMesozoic(J_3 K).