摘要
本文通过对渤海西部近海6个柱状的综合分析,阐述了微体化石在不同沉积相的特征,并根据拄中自下而上相变反映的海侵旋回划分了地层与时代。最后,探讨了该区域自晚更新世末以来的古地理变迁。
The microfaunal analysis of 120 sediment samples from six cores showed that there existed four kinds of facies, namely, continental, estuarine-littoral, littoral and shallow-sea facies in each core. The sediments in the cores were divided into Late Pleistoncene and Holocene sediments by using facies succession, and carbon-14 and paleoclimatical dating. Holocene sediment was divided into lower, middle and upper pars separately. Paleogeographic changes since Late Pleistocene were discussed.
出处
《海洋通报》
CAS
CSCD
北大核心
1993年第3期73-79,共7页
Marine Science Bulletin
关键词
古生物
地层
古地理
有孔虫
第四纪
Bohai Sea
west coast
sediment core
Paleogeography
foraminif era
ostracoda
