CAJ | 학술논문

在川东地震资料基础上，结合地质资料，系统分析了川东高陡构造特征、演化特征及成因机制。川东高陡断褶带经历了由拉张向挤压转变的动力学环境，主要划分为4期构造演化阶段：弱褶皱阶段（印支期以前）、褶皱雏形阶段（印支期）、褶皱活跃阶段（燕山期）、褶皱定型阶段（喜马拉雅期）。川东高陡断褶带现今构造格局受早期基底断裂控制、晚期多期挤压构造叠加改造，定型“隔挡式”高陡断褶带排状展布；受纵向2套主要膏盐滑脱层及1套次要泥页岩滑脱层影响，川东断褶带纵向上可划分为3个构造形变层，在多期挤压应力过程中，各构造层纵向上形成、演化具有差异性，构造形态截然不同。四川盆地多期挤压构造叠加改造对川东盐类矿床和油气保存产生了重要影响。
재천동지진자료기출상，결합지질자료，계통분석료천동고두구조특정、연화특정급성인궤제。천동고두단습대경력료유랍장향제압전변적동역학배경，주요화분위4기구조연화계단：약습추계단（인지기이전）、습추추형계단（인지기）、습추활약계단（연산기）、습추정형계단（희마랍아기）。천동고두단습대현금구조격국수조기기저단렬공제、만기다기제압구조첩가개조，정형“격당식”고두단습대배상전포；수종향2투주요고염활탈층급1투차요니혈암활탈층영향，천동단습대종향상가화분위3개구조형변층，재다기제압응력과정중，각구조층종향상형성、연화구유차이성，구조형태절연불동。사천분지다기제압구조첩가개조대천동염류광상화유기보존산생료중요영향。
On the basis of the seismic data and geological information,we analyzed the tectonic characteristics, evolution and formation mechanism of high and steep structures in eastern Sichuan.The high and steep fault folding belt experienced the dynamic environment change from extension to compression,and is divided into four tectonic evolution stages:the formation of incompetent folding (The Indosinian before), the formation of embryonic folding (The Indosinian period ), the formation of active folding (The Yanshanian period ),the formation of fold forming (The Himalayan period ).The present tectonic framework of high and steep fault folding belt in eastern Sichuan is controlled by pre-existing structures, and multiple stages of compression tectonic superimposition,finally resulted in the formation of high and steep fault folding belt with is ejective structure.Influenced by two sets of gypsum-salt detachment layer and one set of shale detachment layer,the high and steep fault folding belt in eastern Sichuan can be divided into three tectonic deformation layers.During the multiple stages of extrusion stress,each structural layer shows various structures evolution due to the differences in the longitudinal formation and evoluation.There is some guiding significance to the further study on the control of the multi-phase tectonic superimposition on the salt deposits and the oil and gas preservation.