Based on the 1:50000 and 1:250000 regional geological survey in Jiayin, Yichun, Hegang, Jixi and Mudanjiang areas in recent years, with the concept of tectonic assemblage of igneous rocks, a preliminary plan on the division of Paleozoic tectonomagmatic stage is put forward, according to the zircon U-Pb age of the intrusive rocks. The igneous rocks that are related to oceanic crust subduction are divided into five stages, which are Caledonian Early Cambrian, Early-Middle Ordovician, Middle Silurian, Variscan Late Carboniferous and Late Permian. The igneous rocks that are related to continental collision is divided into two stages: Caledonian Early Cambrian and Variscan Middle Permian. The post-orogenic A-type granite is recognized as two stages. On this basis, the Caledonian tectonomagmatic stage and Middle Variscan-Indosinian tectonomagmatic stage are set up. The point, which is different from the traditional view, will provide a new access to understand the tectonic evolution of this region.%以火成岩构造组合的概念和方法为指导,以近几年在嘉荫、伊春、鹤岗、鸡西、牡丹江等地区开展的1∶5万、1∶25万区调研究为基础,基于侵入岩锆石U-Pb年龄,建立了研究区古生代构造岩浆阶段划分的初步方案.划分出与洋壳俯冲事件有关的火成岩构造组合5期,分别为加里东期早寒武世、早中奥陶世、中志留世,华力西期晚石炭世和晚二叠世.与大陆碰撞有关的火成岩构造组合有两期,分别为加里东期早寒武世和华力西期中二叠世.造山后A型花岗岩二期.据此划分出加里东构造岩浆阶段和中华力西—印支构造岩浆阶段.指出其与传统观点不同,为重新认识该区大地构造演化提供了新的思路.并在此基础上讨论了大地构造演化.
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