新疆地质
新疆地質
신강지질
Xinjiang Geology
2015年
3期
373-377
,共5页
郭文建%滕良娟%瞿建华%任本兵%尤新才
郭文建%滕良娟%瞿建華%任本兵%尤新纔
곽문건%등량연%구건화%임본병%우신재
准噶尔盆地西北缘%克-夏断裂带%达尔布特断裂
準噶爾盆地西北緣%剋-夏斷裂帶%達爾佈特斷裂
준갈이분지서북연%극-하단렬대%체이포특단렬
NW margin of Junggar Basin%Karamay-Xiazijie fault zone%Dalabute fault
综合研究地表实测剖面、二维-三维地震资料及时频电法剖面，认为准噶尔盆地西北缘克-夏断裂带兼具逆冲推覆特征与压扭走滑特征。实钻资料证明下古生界构成的推覆体逆冲到二叠系上，表明造山带曾发育逆冲推覆构造。但其剖面断裂呈陡-缓-陡的椅状，与达尔布特断裂相交构成花状断裂，表现为右行走滑特征，表明克-夏断裂带为受达尔布特断裂控制发育的压扭性走滑构造。结合区域构造运动背景分析，认为克-夏断裂带于晚石炭—早二叠世发育为冲断及推覆构造，晚二叠世之后受达尔布特断裂控制发育为右行走滑构造。
綜閤研究地錶實測剖麵、二維-三維地震資料及時頻電法剖麵，認為準噶爾盆地西北緣剋-夏斷裂帶兼具逆遲推覆特徵與壓扭走滑特徵。實鑽資料證明下古生界構成的推覆體逆遲到二疊繫上，錶明造山帶曾髮育逆遲推覆構造。但其剖麵斷裂呈陡-緩-陡的椅狀，與達爾佈特斷裂相交構成花狀斷裂，錶現為右行走滑特徵，錶明剋-夏斷裂帶為受達爾佈特斷裂控製髮育的壓扭性走滑構造。結閤區域構造運動揹景分析，認為剋-夏斷裂帶于晚石炭—早二疊世髮育為遲斷及推覆構造，晚二疊世之後受達爾佈特斷裂控製髮育為右行走滑構造。
종합연구지표실측부면、이유-삼유지진자료급시빈전법부면，인위준갈이분지서북연극-하단렬대겸구역충추복특정여압뉴주활특정。실찬자료증명하고생계구성적추복체역충도이첩계상，표명조산대증발육역충추복구조。단기부면단렬정두-완-두적의상，여체이포특단렬상교구성화상단렬，표현위우행주활특정，표명극-하단렬대위수체이포특단렬공제발육적압뉴성주활구조。결합구역구조운동배경분석，인위극-하단렬대우만석탄—조이첩세발육위충단급추복구조，만이첩세지후수체이포특단렬공제발육위우행주활구조。
Comprehensive research of surface profile、2D-3D seismic data and time-frequency profile plot,make known the thrust\strike- slip belt characteristics of Karamay- Xiazijie fault zone.The drilling data show that early Palaeozoic nappe thrust above Permian-Triassic stratum.The fault presents steep-slow-steep on the profile,like chair.At the same time,the fault that intersects with Dalabute fault formed flower structure,shows dextral strike-slip.Fold belt also devel-oped strike-slip structure.Regional tectonic background analyses,Karamay-Xiazijie fault zone developed thrust-nappe during Carboniferous to Early Permian and dextral strike-slip during late Permian.
