正在萌芽段的震积地层学  

SEISMOSTRATIGRAPHY AT ITS GERMINATION STAGE -A BRIEF HISTORY OF RESEARCH ON SEISMITE AND ITS PROSPECT

作　　者：梁定益[1] 聂泽同[1] 宋志敏[1] 万晓樵[1] 

机构地区：[1]中国地质大学

出　　处：《高校地质学报》1997年第4期458-461,共4页Geological Journal of China Universities

基　　金：地质矿产部地质行业基金;地质矿产部"八五"攻关三江项目!90027;国家自然科学基金!1988~1992.1996

摘　　要：地震是经常发生的．是地球节律的一种反映。震积岩一词是SeilacherA（1969）首先提出的．随后欧美学者掀起了研究高潮。Mutti等（1984）认为浊积岩即震浊积岩，可以作为一个事件地层单元进行填图与追索。我国学者宋天锐（1988）最早提出地震-海啸序列，可以作为燕山地区雾迷山组地层划分对比的标志。乔秀夫等（199，1995）在华北上震旦统-下寒武统中建立了“碳酸盐岩液化地震序列”与“萨布哈震积序列”，并对华北东部同期地层进行了对比与成因地层学研究。笔者（1991，1994）指出扬子西缘的二叠系震积岩由原地相的地震干扰层与异地相的滑来震积层两部分组成，两者之门被震积不整合面分开。在伸展构造环境下，震积不整合即伸展不整合，它是瞬时间于水下形成的。滑来震积层表现为多旋回的震积序列．其中的化石混积层具有正向有序混积现象，这也与盆地边界正断层多次活动有关。由此，提出“扬子西缘的东吴伸展运动”新认识。将震积岩的研究与构造灾变事件、事件地层学接轨。我国地史上也是一个多震的地区，在我国土地上，完全有可能哺育出现代地层学的一门新分支——震积地层学。Earthquake occurs frequently ,it is a reflection of the earth's rhythm. Seismite, a term first proposed by A. Seilacher (1969 ), was subsequently used at a high tide of its research by European and American geologists. Mutti et al. (1984 ) regarded megaturbidite as seismoturbidite which may be used as an element of event stratigraphy for mapping and bedtracing. In China, Song Tianrui is the first geologist who proposed in 1985 the seismotsunami sequence as the marker to subdivide and correlate the Wumishan Formation in Yanshan area. Qiao Xiufu et al. (1994, 1995 ) established'Seismic sequence in carbonate rocks by vibrational liquefaction 'and 'the sabkha seismite sequence 'in the Upper Sinian-Lower Cambrian Series,and they also made a correlation and genetic stratigraphic study on strata of the same age in the eastern part of North China. The present authors (1991, 1994 ) pointed out that the Permian seismite in the west margin of the Yangtze massif is composed of two parts: the seismo-disturbed beds of autochthonous factes and the sliding seismite of allochthonous factes; and these two arc separated by a seismounconformity which formed instantaneously under water. The sliding seismites are composed of a multicyclic scismitic sequencs,in which the beds with mixed fossils show a normal and ordered arrangement and arc related apparently to the repeated normal faultings along the basin margin. Hence a new recognition of the Dongwu extension movement along the west margin of the Yangtze massif is proposed, and the study of seismite is geared to the tectono-catastrophe event and event stratigraphy. In the geologic history China was a multiseismic country, hence it is quite possible that there may exist certain favourable sites for the establishment, research and development of a new branch of modern stratigraphy-Seismostratigraphy

关 键 词：震积岩 震积不整合 伸展不整合 震积地层学 

分 类 号：P53[天文地球—古生物学与地层学] P588.2[天文地球—地质学]