雅布赖盆地中生代构造特征
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摘要
雅布赖盆地大地构造位置处于阿拉善地块的北部弱活化带,依据地震剖面反射结构特征,结合区域地质和钻井资料可将盆地划分为三个构造层。盆地演化经历了印支运动,燕山运动和喜山运动三个阶段,其中以白垩纪的喜山运动影响最大。喜山期时,盆地在区域挤压应力作用下,现今周缘山系快速隆升,盆地西南部的老地层向中心逆掩推覆,沉积盆地明显缩小,表现出现今盆地的范围和格局。
The Yabrai basin lies in north of the Alxa massif as a weak mobilized zone.The basin may be divided into three structural levels based on seismic data in combination with regional geological and drilling data.The basin was subjected to Indo-Chinese,Yenshanian and Himalayan movements.The basin was subducted due to compressional stress during the Himalayan movement.
The Yabrai basin lies in north of the Alxa massif as a weak mobilized zone.The basin may be divided into three structural levels based on seismic data in combination with regional geological and drilling data.The basin was subjected to Indo-Chinese,Yenshanian and Himalayan movements.The basin was subducted due to compressional stress during the Himalayan movement.
引文
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[4].赵宗宣.甘肃的侏罗系[J].甘肃地质学报,1998.7(1):1～24.
[5].王廷印,吴茂炳.阿拉善地区华北板块北部构造演化与成矿作用[J].兰州大学学报(自然科学版).1993.29(4):252～256.
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[10].Allen H A,Allen J R.Basin Analysis,Principles and Applications.London:Blackwell Scientific Publications,1990.464
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[14].张一伟,陈发景,陆克政,等,中国含气(油)盆地的构造格架和成因类型,中国科学(D辑).1996,26(6):493～498.
[15].马杏垣,吴大宁.中国新生代的伸展盆地[J],地质科技情报.1988,7(2):1～12.
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