博罗霍洛褶断带大地构造演化特征

研究区属中天山褶皱断裂隆起带的一部分，北邻准噶尔阿拉套晚古生代岛弧，南毗伊犁地块。博罗霍洛褶断带的发展演化与天山造山带密切相关，它的雏型可追溯到晚元古代已展现出东西向隆起带，早古生代成为大陆裂谷，到晚古生代随着天山地槽的封闭开始褶皱隆起，中新生代以升降运动为主，造成强烈的构造复活并产生大量新断裂。

THE GEOTECTONIC EVOLUTION FEATURE OF THE BOLUO HELUO FOLD BELT

The research area belongs to one part of Medial Tianshan fold fault upwarping zone, it bolders onZhunger Ala Kui island arc of the Palaeozoic era northwards and joints to Yili landmass southwalds. The development and evolution of the Boluo Heluo fold belt intimately colrelate to Tianshan orogenic belt. Its embryo may trace back to the E-W latitudinal upwarping zone, which had been exposed in later Proterozoicera, become continental rift in early Palaeozoic era, started to post - folding uplift with Tianshan geosynclinebeing confined in later Palaeozoic era, and demonstrated mainly elevating or falling movement in Mesozoicand Cenozoic eras, thus, producing intensely structural resurgance and numerous new faults.