南京大学学报(自然科学版)
南京大學學報(自然科學版)
남경대학학보(자연과학판)
JOURNAL OF NANJING UNIVERSITY(NATURAL SCIENCES)
2015年
3期
612-625
,共14页
吴珍云%尹宏伟%汪新%徐士进
吳珍雲%尹宏偉%汪新%徐士進
오진운%윤굉위%왕신%서사진
库车坳陷%秋里塔格%盐构造%盐底辟%物理模拟
庫車坳陷%鞦裏塔格%鹽構造%鹽底闢%物理模擬
고차요함%추리탑격%염구조%염저벽%물리모의
Kuqa depression%Qiulitage%salt structure%salt diapir%analogue modeling
本文结合遥感影像解译图,野外地质踏勘,地震剖面解析和物理模拟实验,对库车坳陷西段却勒—阿瓦特地区褶皱-冲断带前缘的三个出露地表的盐底辟构造特征和形成机制进行了研究,研究结果表明却勒—阿瓦特盐推覆构造、温宿盐场盐丘和温宿大峡谷盐底辟构造形成演化主要受控于初始含盐盆地宽度、早期盐底辟构造和区域挤压应力作用。含盐盆地宽度的变化是盆地内分段差异构造变形的主控因素,而早期盐底辟构造则对后期盆地挤压盐构造变形有重要的影响。模拟实验结果表明却勒—阿瓦特盐推覆构造是盐盆地内早期盐底辟构造受后期挤压变形的产物。温宿盐场和温宿大峡谷盐底辟则是盆地边缘盐背斜受挤压作用和剥蚀作用影响而出露地表形成的盐底辟构造。
本文結閤遙感影像解譯圖,野外地質踏勘,地震剖麵解析和物理模擬實驗,對庫車坳陷西段卻勒—阿瓦特地區褶皺-遲斷帶前緣的三箇齣露地錶的鹽底闢構造特徵和形成機製進行瞭研究,研究結果錶明卻勒—阿瓦特鹽推覆構造、溫宿鹽場鹽丘和溫宿大峽穀鹽底闢構造形成縯化主要受控于初始含鹽盆地寬度、早期鹽底闢構造和區域擠壓應力作用。含鹽盆地寬度的變化是盆地內分段差異構造變形的主控因素,而早期鹽底闢構造則對後期盆地擠壓鹽構造變形有重要的影響。模擬實驗結果錶明卻勒—阿瓦特鹽推覆構造是鹽盆地內早期鹽底闢構造受後期擠壓變形的產物。溫宿鹽場和溫宿大峽穀鹽底闢則是盆地邊緣鹽揹斜受擠壓作用和剝蝕作用影響而齣露地錶形成的鹽底闢構造。
본문결합요감영상해역도,야외지질답감,지진부면해석화물리모의실험,대고차요함서단각륵—아와특지구습추-충단대전연적삼개출로지표적염저벽구조특정화형성궤제진행료연구,연구결과표명각륵—아와특염추복구조、온숙염장염구화온숙대협곡염저벽구조형성연화주요수공우초시함염분지관도、조기염저벽구조화구역제압응력작용。함염분지관도적변화시분지내분단차이구조변형적주공인소,이조기염저벽구조칙대후기분지제압염구조변형유중요적영향。모의실험결과표명각륵—아와특염추복구조시염분지내조기염저벽구조수후기제압변형적산물。온숙염장화온숙대협곡염저벽칙시분지변연염배사수제압작용화박식작용영향이출로지표형성적염저벽구조。
Based on remote sensing image,field works,seismic profiles and physical modeling,the structural features and formation mechanism of three exposed salt diapirs in the fold-thrust frontal belt of Quele-Awate area,Western Kuqa depression have been researched.Research results show that the formation of the salt nappe in Quele(Awate) area,the salt diapirs in Wensu Saltern and Wensu Canyon was controlled by the width of the initial salt basin,the early passive salt diapir and the regional compression stress.The variable width of the salt basin has a major controlling influence on the differential structural deformation in different longitudinal segmentations from Quele area to Awate area in the western Kuqa depression.Also,the early passive salt diapir has an important controlling role on the subsequent compressional structural deformation.Model results demonstrate that the Quele-Awate salt nappe was the result of the subsequent compressional structural deformation of the early passive diapir in the basin. The salt diapirs in Wensu Saltern and Wensu Canyon were resulted from the erosion of salt anticlines in the margin of the salt basin.