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歪头山地区是辽东鞍山群出露较好的地区,歪头山铁矿就赋存于鞍山群茨沟组中。对该地区鞍山群的研究不仅有助于查明鞍山式铁矿的层位、类型、空间分布;而且对解决南北鞍山群铁矿对比,鞍山群地层层序都有着重要意义。由于本区变质杂岩经历了复杂的演化历史,不同时期的地质事件都可以在其中找到影响的信息。因此,如何正确认识和查明这些作用结果的主要关键之一是变质岩构造问题。 通过一九八○年的野外工作和室内整理,歪头山一带至少经历了三期变形作用,其中以第一期变形最为突出,表现最强烈,我们称为强期变形作用。这次变形是鞍山运动造成的结果,第二期变形可能是辽河群变形期迭加的表现,而第三期变形有可能属中生
Waitoushan area is Anshan Group Liaodong better exposed areas, Waituanshan iron ore on Anshan Group Czigou group. The study of Anshan Group in this area not only helps to find out the stratigraphic position, type and spatial distribution of Anshan-type iron ore, but also is of great significance to the stratigraphic sequence of Anshan Group. Due to the complex evolutionary history of the metamorphic complex in this area, the geological events of different periods can find the information of influence. Therefore, one of the key issues of how to correctly understand and find out the result of these actions is the tectonic setting of metamorphic rocks. After 1980’s fieldwork and indoor finishing, the area around Waituansha Mountain has undergone at least three stages of deformation, of which the first stage deformation is the most prominent and the strongest performing. We call it the strong deformation. The deformation is the result of Anshan movement, the second phase of deformation may be superimposed Liaohe group deformation performance, and the third phase may be deformed Mesozoic