CAJ | 학술논문

辽西地区中生代陆相盆地及盆岭构造发育,可划分为早中印支期(T1,2)、晚印支期-早燕山期(T3-J1)、中燕山期(J2-J3)、晚燕山期(K1)、末燕山期(K2)5个盆地形成时期.一般地,盆地早期多为断陷阶段,晚期为拗陷阶段.盆地长轴方向为北东向或北北东向,受控于该时期的构造格架.山岭(古隆起)及其间宽广低拗的盆地组合形成盆岭构造.盆岭构造为辽西地区中生代构造的一大特色,可分为侏罗纪和白垩纪2个类型的盆岭构造,也反映了中生代地壳多次的裂陷和伸展作用.
료서지구중생대륙상분지급분령구조발육,가화분위조중인지기(T1,2)、만인지기-조연산기(T3-J1)、중연산기(J2-J3)、만연산기(K1)、말연산기(K2)5개분지형성시기.일반지,분지조기다위단함계단,만기위요함계단.분지장축방향위북동향혹북북동향,수공우해시기적구조격가.산령(고륭기)급기간관엄저요적분지조합형성분령구조.분령구조위료서지구중생대구조적일대특색,가분위주라기화백성기2개류형적분령구조,야반영료중생대지각다차적렬함화신전작용.
The Mesozoic continental basins and basin-range structures are well developed in Western Liaoning Province. The basins were formed in five stages, i.e. Early-Middle Indosinian (T1,2), Late Indosinian-Early Yanshanian(T3-J1), Middle Yanshanian (J2-J3), Late Yanshanian (K1) and the end of Yanshanian (K2). Generally, the basins express fanlt-depression in the early stages, while depression in late stages. The major axes of the basins trend NE or NNE, controlled by the tectonic frameworks then.. The mountains (old uplifts) and wide basins in between combined the basin-range structures, which characterize the Mesozoic structure in Western Liaoning. The basin-range structures can be classified into Jurassic and Cretaceous types, showing multiple crust movements of fault-depression and extension during Mesozoic.