The Chagan sag developed on the ancient orogenic belts near the northwestern margin of North China Plate, which was a post-orogenic extensional collapse basin. 摘要查干凹陷發(fā)育于華北板塊西北緣的古造山帶基礎之上，屬造山期后的伸展垮塌型盆地。
The manifestations of large-scale magmatic intrusions occurring in the upper-mid crust in the cores of the orogenic belt were related to post-orogenic geological processes. 造山帶核部上中地殼存在著(zhù)規模很大的巖漿巖體的顯示，與造山期后的地質(zhì)作用有關(guān)。
