摘要
震积岩是具有特殊震积构造和震积序列的一种灾变性事件岩。近十几年来国内外许多学者在研究、对比现代和古代震积岩成因沉积物后,逐渐认识到震积岩不同于其他类型的沉积岩,震积岩的主要识别标志有震裂缝、地裂缝、断裂递变层、微同沉积断裂、层内褶皱、假结核、液化砂(泥)岩脉、火焰构造及振动液化卷曲变形构造等。对中国震积岩和震积作用、地震——海啸序列、碳酸盐岩振动液化序列与萨布哈震积岩序列、震积岩与震积不整合序列、大陆边缘震积岩序列、陆相断陷湖盆震积岩及垂向序列等研究成果进行了综述。通过岩心观察和描述开展陆相震积岩研究具有重要的地质意义,特别是生油断陷湖盆震积岩的研究具有重要的石油地质意义。
Seismite is a type of catastrophic deposits with recognizable evidence for seismic activities and sequence. During past ten years comparative study of modern and ancient seismites reveals some significant difference between seismite and other sedimentary rocks. Seismite can be recognized by such distinct features as earthquake fissures, fault-graded beds, synsedimentary micro-fractures, within-bed folds, fake nodules, liquefaction sandstone （mudstone） veins, flame structure, and vibrational liquefaction deformation structure. We also review recent studies of seismo-deposition and seismite, earthquake-tsunami sequence, seismic sequence of vibrational liquefaction in carbonate rocks, seismite and seismo-unconformity, seismite sequence in continental margin, seismite in continental fault lacustrine basin, and vertical squence of seismite. Through the observation and description of drill cores, we can study seismite deposits in terrestrial enviroments. Such studies are important to the characterization of source rocks in fault-bound lacustrine basins.
出处
《地层学杂志》
CSCD
北大核心
2006年第2期171-176,共6页
Journal of Stratigraphy
基金
国家"十五"科技攻关项目(编号:2001BA605A09)资助。
关键词
震积岩
灾变性事件沉积
识别标志
软沉积变形构造
震积序列
seismite, event deposits, distinguishing mark, soft sedimentary deformation structure, seismite sequence
