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准噶尔盆地南缘霍玛吐构造带晚新生代构造变形特征及时间

LI Shu-xin,HE Guang-yu,HE Kai-quan,WAN Li-gao,LIU Deng-ming,SUN We-dong,WEI Jian-qiang,WU Lei,JIN Wei-feng,FENG Xi,LIN Lu

JOURNAL OF ZHEJIANG UNIVERSITY(SCIENCE EDITION)（2008）

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Abstract
通过地震剖面精细地质解释,时准南缘霍马吐构造带的构造变形特征进行了系统分析.认为霍马吐构造带纵向上分三层,第一层为沿着古近系安集海河组底部泥岩层滑脱的单斜带,第二、三层在霍尔果斯为一断层转折一复合楔状叠加褶皱,在玛纳斯为一断层转折-断层传播叠加褶皱,在吐谷鲁则为一断层传播-断层传播叠加褶皱,滑脱层分别为下白垩统和中、下侏罗统的煤系或泥岩.构造变形开始于塔西河组(N1t)沉积期,定型于西域组(Q1x)沉积期及之后,并大体具有"西早东晚"、"上早下晚"的构造变形特征.
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