摘要
吉林、黑龙江东部地区中生代存在两种机制的碰撞构造，即由南北陆块碰撞（华北古板块与张广才—佳木斯地块）所形成的近东西走向的构造（古洞河—富尔河碰撞带）和东部地体向陆缘增生挤压所产生的南北走向的褶皱—推覆构造。前者由早期构造杂岩带及叠加于其上的印支期韧性剪切带和推覆构造所代表，后者是在印支期的褶皱和糜棱岩化带之上发育的推覆构造。两种碰撞构造的主要发育时期为晚中生代（Ｊ＿３—Ｋ）。
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).
基金
高等学校博士学科点专项科研基金
关键词
碰撞构造
地体
推覆构造
中生代
collision tectonics,terrane,nappe structure,eastern Jilin andHeilongjiang
