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广西中新生代陆相盆地是承袭基底印支期构造格架发育,由于所处的大地构造位置的特殊性,显然与相邻诸省的盆地格局不尽相同。桂东地区是华夏构造系延展的地域,这里无论是古生代、中新生代的区域大断裂带、褶皱带、岩浆带和混合岩化带均作 NE 向展布特别是由侏罗系、白垩系和第三系构成的十万大山盆地,具有这一方向的特色。桂西是右江构造系露布地区,那里由上古生界和下、中三迭统所构成的褶皱带、大断裂带,以及由第三系组成,主要沿右江流域发育的百色盆地,是这 NW 向构造的代表。另外,桂中南宁等“V”型盆地的出露,是上述两个方向相交切复合的过渡地带(图1)。
The Meso-Cenozoic continental basins in Guangxi inherited the Indosinian tectonic framework development. Due to the particularity of the tectonic setting in this area, it is clear that the basin pattern in adjacent provinces is different. Guidong area is the extension of the Huaxia tectonic system. Here, the Meso-Cenozoic and Meso-Cenozoic regional major faults, fold belts, magmatic belts and migmatitic zones are all NE-trending, especially Jurassic-Cretaceous And Tertiary Mountains formed by the Tertiary, has the characteristics of this direction. Guixi is the Lubu area of the Youjiang structural system, where the fold belts and major fault belts formed by the Upper Paleozoic and the Lower and Middle Triassic belts, and the Baise Basin, which is composed of Tertiary and developed mainly along the Youjiang River valley. This NW-oriented representation of the structure. In addition, the emergence of “V” basins such as Guizhong Nanning and so on is the transitional zone where the above two directions intersect each other (Figure 1).