Yinggete - bagemaode metamorphic core complex belt with three - layer construction is put forward , which evolved from late jurassic to cretaceous . the extensional simple shear model of the chagan fault depression is established . the tectonic evolution and the dynamics character of chagan fault depression and its adjacent mesozoic - cenozoic basins are discussed : at the end of triassic continental orogeny increased crust thickness crust uplift and denudation were happened ; jurassic was a period of local partly extensional collapse of erogenic belt and cretaceous was a period of widely extensional collapse of postorogenic erogenic belt ; cenozoic was a period of the development of stable intracontinental depression with the character of long distant collision response and weaked compression flexure 討論了查干凹陷及鄰區(qū)中-新生代盆地構(gòu)造演化及其地球動(dòng)力學(xué)特征,三疊紀(jì)(印支期)為陸內(nèi)造山作用與地殼增厚、隆升剝蝕階段;侏羅紀(jì)(燕山早期)為造山后造山帶的局部伸展垮塌階段;白堊紀(jì)(燕山晚期)為造山期后大規(guī)模伸展垮塌作用與伸展盆地的發(fā)育階段;新生代(喜山期)為遠(yuǎn)距離碰撞效應(yīng)與弱擠壓撓曲性質(zhì)的穩(wěn)定大陸內(nèi)坳陷的發(fā)育階段。
The hanging wall of sag extended in southeast direction , with the tulage fault being the boundary fault . yinggete - bagemaode metamorphic core complex developed adjacent to northwest of chagan sag , which evolved from late jurassic to cretaceous with three - layer construction style . the kinematics mechanism of metamorphic core complex and chagan sag is a simple shear model , chagan sag extended and faulted as the metamorphic core complex rised 在查干凹陷西北側(cè)發(fā)育英格特?巴格毛德變質(zhì)核雜巖帶,可能具有三層結(jié)構(gòu)模式,其形成與演化時(shí)代為晚侏羅世末?白堊紀(jì);該變質(zhì)核雜巖與查干凹陷的運(yùn)動(dòng)學(xué)機(jī)制為統(tǒng)一的簡(jiǎn)單剪切模式;在變質(zhì)核雜巖隆升的同時(shí),查干凹陷發(fā)生伸展斷陷。