江淮地区地震考古的新发现

发布时间：2019-06-25 18:55

【摘要】：对江淮地区近期发掘的四个考古遗址进行了地震考古研究,发现了丰富的构造变形现象,包括古地震事件。其中固镇小李家遗址的汉代砖室墓变形具有统一的方向性,显示受区域NE-SW向构造应力作用形成,与强烈地震的快速变形无关;合肥乱墩子遗址的多数竖穴土坑墓存在不规则变形,但M66的压扭变形可能受郯庐断裂右旋走滑活动牵引形成,也与地震力作用无关。在和县大城子遗址和马鞍山申东遗址发现古地震遗迹,主要为地震裂缝、文化层位错及褶曲。在和县大城子遗址通过文化层中木炭的AMS14 C测年确定出西周中晚期的一次古地震事件(2 580±30)~(2 760±30)a BP;在马鞍山申东遗址通过文化层考古断代及地震裂缝与文化层的切割关系识别出一次古地震事件亦发生于西周中晚期。最后综合本次研究与前人对江淮地区西周时期的古地震研究成果,初步认为西周中晚期江淮地区处于中强地震活跃期。
[Abstract]:The seismic archaeology of four archaeological sites excavated recently in Jianghuai area has been studied, and a wealth of tectonic deformation phenomena, including paleo-seismic events, have been found. The deformation of the brick chamber tomb of Xiaolijia site in Zhonggu Town has a unified directivity, which shows that it is formed by the tectonic stress in the regional NE-SW direction, which has nothing to do with the rapid deformation of the strong earthquake. Most of the vertical hole soil pit tombs in the Tiandunzi site in Hefei have irregular deformation, but the compression and torsional deformation of M66 may be caused by the right-handed strike-slip activity of the Tanlu fault, and also has nothing to do with the seismic force. Ancient earthquake relics were found at Dachengzi site and Maanshan Shendong site in he County, mainly seismic cracks, cultural dislocation and folds. An ancient earthquake event in the middle and late Western Zhou Dynasty was determined by AMS14 C dating of charcoal in the cultural layer of Dachengzi site in Hexian County. An ancient earthquake event also occurred in the middle and late Western Zhou Dynasty through the archaeological dating of the cultural layer and the cutting relationship between the seismic cracks and the cultural layer at the Shendong site in Ma'anshan. Finally, based on the previous research results of the ancient earthquakes in the Western Zhou Dynasty in Jianghuai area, it is preliminarily considered that the Jianghuai area in the middle and late Western Zhou Dynasty is in the active period of moderate and strong earthquakes.
【作者单位】：安徽省地震局;
【基金】：地震行业科研专项(201308012)
【分类号】：P316;K872

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