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本文通过研究区5个钻孔松散沉积岩心磁性地层的划分对比,获知布容与松山极性带的界线,南黄海和陆区北部位于80.0—99.5m。陆区的南部此界线于270.4m深处。松山和高斯极性带的界线,海区未揭露到,其沉积起始时间都小于1.7Ma。而陆区的南、北部分别位于117m和328.2m。高斯和吉尔伯特极性带的界线,陆区北部为140m,而南部区为460.15m。沉积起始时间为3.4Ma。吉尔伯特底界仅北部陆区所揭示,为190.5m。松散沉积层与下伏白垩纪(?)石灰岩接触面位于400.35m,沉积起始时间约17.0Ma。
In this paper, we compare the magnetic stratums of five loose cores in the study area, and get the boundaries between the cloth capacity and the Songshan polar belt. The northern part of the South Yellow Sea and the land area are located at 80.0-99.5m. The southern part of the continental zone is at a depth of 270.4 meters. Matsuyama and Gaussian polar zone boundaries, the sea has not been exposed to the deposition of the initial time less than 1.7Ma. The southern and northern parts of the land are located at 117m and 328.2m respectively. The boundary between the Gaussian and Gilbert polarities is 140 m in the northern part of the land and 460.15 m in the southern part. The deposition time is 3.4Ma. The Gilbert bottom boundary is only 190.5m revealed by the northern continental land. The contact surface between the loose sedimentary layer and the underlying Cretaceous (?) Limestone is located at 400.35m and the sedimentary onset time is about 17.0Ma.