【摘要】 尤溪东华地区发现的逆冲推覆构造形成于印支晚期,是以顺层滑动为主导、顺层下滑进一步扩展到切层上推、辗转逆掩的多种因素复合作用的产物,使中元古界变质岩自SW向NE方向逆冲推覆于二叠系之上。该推覆构造在逆冲来源方向上可分为根带、中带和锋带以及相关的后缘带和外缘带,并以后展式扩展为特征,飞来峰、构造窗较发育。该区推覆构造的发现对于闽东火山断坳带火山岩基底构造研究以及地质找矿具有一定意义。更多还原

【Abstract】 The thrust nappe structures found in the Donghua area of Youxi County, which develop in late Indosinian Stage, are a product of multiple structure activities that are bedding glide (dominant), upthrusting and overthrusting , by which the middle Proterozoic metamorphic rocks upthrust over the Permian strata from southwest to northeast. Along the direction of original overthrust, the nappe structures can be divided into the parts of root, centre, front, rear margin and external margin, which are characterized by the rearward expansion. The klippes and tectonic windows develop well in the area. The discovery of nappe structures in the area is of certain importance to the ore prospecting and to the study of basement structures of the volcanic rocks in the volcanic fault depression in Central Fujian.更多还原