江西铁砂街地区变质构造初步研究  

A PRELIMINARY STUDY ON STUCTURE OF METAMORPHIC ROCKS IN TIESHAJIE AREA,JIANGXI

作　　者：周庆德 张湖[1] 

机构地区：[1]核工业华东地勘局265大队,中国科学院广州地球化学研究所

出　　处：《江西地质》1995年第4期292-298,共7页Jiangxi Geology

摘　　要：本文在研究铁砂街地区变质岩构造形迹和组构的基础上，划分出了几个构造域。作者认为：铁砂街群下亚群、上亚群和周潭群属同一构造层，应该先一步研究上述地层的时代归属或东南褶皱带在本区的构造运动史。谢家牌地区靠近东南褶皱带的核部，铁砂街－胡家地区较靠近外侧，刘家－顾家位于边缘，是从造山带推覆到陆块上的岩系。东南褶皱带碰撞造山时板块相对运动方向为近南北向。刘家－颜家地区之下可能有扬子地块作为基底，并有向南缓倾的推覆剪切带，上盘向北推覆。并据此建立了本区总的构造模式。Several tectonic terrances have been classified on the basis of study-ng structural features of fabrics of metamorphic rock in Tieshajie area。The authors hold that the lower sub-group and upper sub-group of Tieshajiegroup and Zhoutang group belong to the same synthem。 So, the time belon-ging of above strata or tectonic movement history of southeast folded beltin this area should be further studied。 Xiejiapai area is near the core ofthis belt, while Tieshajie-Hujia area is close to its outside, But Liujia-Gujiaarea is located in its fringe。 It belongs to rock series which was nappedfrom the orogenic belt to the landmass。 The direction of relative move-ment of the plate was nearly north-south direction when collision orog-eny in southeast fold belt took place under Liujia-Gujia area,there wouldbe Yangzi block regarded as basement。Meanwhile,there exists thrust-she-ar zone dipping towards south gently with sense。Its hanging wall wasnapped towards north。 Based on the above-mentioned understandings,thegeneral tectonic model has been established in this area。

关 键 词：变质岩 大地构造 东南褶皱带 铁砂街 变质构造 

分 类 号：P588.3[天文地球—岩石学]