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一、我国自流盆地形成的大地构造条件自流盆地的形成主要决定于大地构造条件。根据我国地质演变历史,在前震且纪吕梁运动以后,已基本硬化形成地台。但中国西部和东部的发展历史不同,西部属活动性比较大的地槽型强烈褶皱地区,东部则属活动性较小的、以前震且纪结晶片岩和轻变质岩系作基底并以古生代浅海相沉积和中生代陆相沉积作盖层的地台型断裂褶皱地区。
First, the tectonic setting of the gravity basin formed in our country The formation of the gravity basin mainly depends on the tectonic conditions of the earth. According to the history of geological evolution in China, after the earthquake and Ji Luliang movement, it has basically hardened to form a platform. However, the history of the development in the west and east of China is different. The western part of the basin is characterized by highly active geosyncline fold areas, while the eastern part is less active. Previously, epicenter schist and metamorphic rocks were the basement and the Paleozoic shallow sea Sedimentary and Mesozoic continental facies as a platform-type fault fold area.