石油实验地质
石油實驗地質
석유실험지질
Petroleum Geology and Experiment
2015年
6期
713-720
,共8页
林水清%王均红%张高源%应文玺%邓晓梅%董银磊%王亮
林水清%王均紅%張高源%應文璽%鄧曉梅%董銀磊%王亮
림수청%왕균홍%장고원%응문새%산효매%동은뢰%왕량
构造变形%构造演化%箕状断陷%伊宁凹陷%叠合盆地
構造變形%構造縯化%箕狀斷陷%伊寧凹陷%疊閤盆地
구조변형%구조연화%기상단함%이저요함%첩합분지
tectonic deformation%tectonic evolution%half-graben rift%Yining Sag%superimposed basin
基于伊犁盆地伊宁凹陷钻/测井、露头、地震剖面等资料,运用平衡剖面恢复技术,在对伊宁凹陷主干剖面构造演化恢复的基础上,开展构造特征研究工作。研究表明:伊宁凹陷具有“北断南超、南北分带”的构造格局和“北强南弱”的构造变形特点;自二叠纪完全进入陆内发展阶段以来,该区经历了二叠纪末、三叠纪末侏罗纪初、侏罗纪末以及新近纪末4个主要挤压形变期,其中二叠纪末期盆地在东西方向上的挤压变形较为强烈,之后减弱并逐渐发展为以南北向挤压为主,新近纪末为伊宁凹陷南北向主体结构的主要定型期;在南北向为主的挤压应力背景下,伊宁凹陷及周边对冲、逆冲构造发育,形成了以挤压构造为主的构造样式。
基于伊犛盆地伊寧凹陷鑽/測井、露頭、地震剖麵等資料,運用平衡剖麵恢複技術,在對伊寧凹陷主榦剖麵構造縯化恢複的基礎上,開展構造特徵研究工作。研究錶明:伊寧凹陷具有“北斷南超、南北分帶”的構造格跼和“北彊南弱”的構造變形特點;自二疊紀完全進入陸內髮展階段以來,該區經歷瞭二疊紀末、三疊紀末侏囉紀初、侏囉紀末以及新近紀末4箇主要擠壓形變期,其中二疊紀末期盆地在東西方嚮上的擠壓變形較為彊烈,之後減弱併逐漸髮展為以南北嚮擠壓為主,新近紀末為伊寧凹陷南北嚮主體結構的主要定型期;在南北嚮為主的擠壓應力揹景下,伊寧凹陷及週邊對遲、逆遲構造髮育,形成瞭以擠壓構造為主的構造樣式。
기우이리분지이저요함찬/측정、로두、지진부면등자료,운용평형부면회복기술,재대이저요함주간부면구조연화회복적기출상,개전구조특정연구공작。연구표명:이저요함구유“북단남초、남북분대”적구조격국화“북강남약”적구조변형특점;자이첩기완전진입륙내발전계단이래,해구경력료이첩기말、삼첩기말주라기초、주라기말이급신근기말4개주요제압형변기,기중이첩기말기분지재동서방향상적제압변형교위강렬,지후감약병축점발전위이남북향제압위주,신근기말위이저요함남북향주체결구적주요정형기;재남북향위주적제압응력배경하,이저요함급주변대충、역충구조발육,형성료이제압구조위주적구조양식。
Balanced section recovery techniques were used to restore tectonic evolution in the Yining Sag of Yili Basin based on drilling, logging, outcrop and seismic data. The sag is faulted in the north and onlapping in the south. The intensity of tectonic deformation is stronger in the north. The study area entered the continental stage in the Permian, and has experienced four compression periods:end Permian, the end of Triassic to the early Ju?rassic, end Jurassic and end Neogene. Compressive deformation was the most severe from east to west at the end Permian, and then decreased and changed to north-south compression. The zonation structure from south to north in the sag formed at the end of the Neogene. Hedge and thrust structures developed in the sag and adjacent areas due to north-south compression, resulting in the present compressive tectonic style.