山东半岛南部滨浅海区晚第四纪声学地层

SHALLOW ACOUSTIC STRATIGRAPHY OF LATE QUATERNARY IN THE COASTAL AND OFFSHORE AREAS OF SOUTHERN OF SHANDONG PENINSULA

通过对山东半岛南部滨浅海区高分辨率浅地层剖面的分析解译,将研究区晚第四纪的地层划分成具有层序意义的6个声学反射地层单元(SU1—SU6),通过典型浅地层剖面与研究区内QDZ03孔和QDZ01孔进行对比,发现声学反射地层单元的划分与钻孔岩心沉积物沉积单元的划分具有很好的对应关系,依据钻孔岩心沉积相特征和沉积物测年数据,我们认为SU1、SU3和SU5分别对应于氧同位素1期、3期和5期的海相沉积,SU2和SU4对应于氧同位素2期和4期的陆相沉积。

Based on the high-resolution seismic profiles acquired from the coastal and offshore area in southern Shandong Peninsula,six stratigraphic units（SU1、SU2、SU3、SU4、SU5and SU6）are established for the late Quaternary.Through the correlation between the shallow seismic profiles and cores QDZ03 and QDZ01in the study area,we found that the stratigraphic units established upon shallow seismic profiles are well correlated with the depositional units established on the cores.Facies analysis and age dating of the two cores suggest that the SU1,SU3 and SU5are the marine deposits corresponding to MIS 1,MIS 3and MIS 5,whereas the SU2 and SU4are the continental facies corresponding to MIS 2and MIS 4respectively.