摘要
大别山造山带为一条中生代陆内造山带 ,其构造系统是由逆冲推覆构造组成的构造楔形体 ,尖端指向南。构成逆冲系统的 4条主干逆掩断层 ,由南向北呈后展式 (上叠式 )依次扩展 ,并使基底岩系和沉积盖层同时卷入构造变形 ,形成了大型薄皮构造 ,造成地壳缩短量达 46 8%。大别山造山带的逆冲推覆构造系统形成于早侏罗世晚期—早白垩世 (J3 1—K1)。
The Dabie shan orogen represents a contractional belt of intracontinent in Mesozoic Era and its fundamental tectonic system is characterized by a tectonic wedge towards south, which consists of a overthrust nappe structrue. The propagation style of the four main overthrust faults, which constitute overthrust system, is backward compared to the root zone from south to north. For the sake of the structural deformation of the rock system of the basement and sedimentary covers the large scale thin skinned structure formed, and the shortening of crust amounts to 48 6 percent. The overthrust nappe tectonic system in the Dabieshan orogenic belt accomplished from later Lower Jurassic to Early Cretaceous (J 3 1-K 1).
出处
《现代地质》
CAS
CSCD
2002年第2期121-129,共9页
Geoscience
关键词
大别山造山带
中生代
逆冲推覆
构造系统
the Dabieshan orogenic belt
Mesozoic Era
overthrust nappe
tectonic system
