摘要
通过对高分辨率浅地层剖面的分析解译,对南黄海西部陆架区进行了声学地层划分。南黄海西部海域声学地层剖面可划分为5套地层Ⅰ、Ⅱ1、Ⅱ2、Ⅲ1、Ⅲ2,每套地层代表一次全球性(或区域性)海平面变化周期内的海进 海退这样一个完整的旋回变化过程所形成的海侵或海退沉积层序。将典型声学地层剖面与区内钻孔岩心的沉积地层岩性单元对比研究,得到各声学反射层的时代、岩性及沉积环境,并发现依据浅地层进行的声学地层划分与钻孔岩心的地质地层划分有较好的对应关系。结合区内钻孔岩心的分析结果,对晚更新世以来南黄海陆架区的沉积环境及沉积过程进行了探讨。
According to explanation of the high resolution shallow seismic profile, we completed acoustic stratigraphical division of the continental shelf in the South Yellow Sea. The shallow seismic profile in the South Yellow Sea can be divided into five strata, and each stratum represents a transgression or recession sedimentation sequence formed in the cycle from transgression to recession in the period of global (regional) sea level change. Comparing typical acoustic stratum with sedimentary stratigraphical lithology units of the boring in this area, we had epoch, lithologic and depositional setting of each acoustic reflection, and found that the acoustic stratigraphical division according to the shallow seismic profile corresponded preferably with geologic stratigraphical division of the boring. Together with the previous study of the boring in this area, we have made an inquiry into the depositional setting and process of the continental shelf in the South Yellow Sea since late Pleistocene.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
2005年第1期33-40,共8页
Marine Geology & Quaternary Geology
基金
中国地质调查局地质大调查项目"1:100 万南通幅海洋区域地质调查"(20001100011201)
中国科学院海洋研究所知识创新试点工程项目
