中国地震事件沉积研究的若干问题探讨

Discussion about studies of earthquake event deposit in China

地震事件沉积已经成为当今沉积地质学的一个热点领域。文中通过回顾国内震积岩的研究历史,总结了中国震积岩研究的成果及其存在的问题,重点讨论了地震引起的软沉积物变形、地震事件沉积的时序、地震事件沉积的空间分布和地震事件沉积序列等。按照地震对沉积物改造的时间,将软沉积物变形划分为同生、准同生、后生变形3类,并对地震同生断裂、准同生期液化沙体沿地震裂缝侵入的液化岩脉和后期断裂充填岩脉,地震形成的微褶皱、液化卷曲变形层理和后期褶皱,地震震动变形和液化变形构造,枕状构造和枕状层之间的区别分别进行了讨论。

Earthquake event deposit has become a ＂hot spot＂ in modern sedimentary geology. By reviewing the history of domestic seismites study, the main achievements and problems about the seismites studies in China have been summed up in this paper, which focused on the earthquake-caused soft-sediment deformation, timing, distribution and sequences of earthquake event deposits etc. Earthquakecaused soft-sediment deformation is divided into syndepositional, penecontemporaneous and epigenetic deformation. The differences were also discussed respectively among earthquake-caused syndepositional veins, liquefied veins and epigenetic veins, micro-fold, liquefied convolute deformation and epigenetic folds, seismic shocks deformation and liquefied deformation, pillow structures and pillow beds.