海洋地质前沿2017，Vol.33Issue(6)：16-23,8.DOI:10.16028/j.1009-2722.2017.06003
D219孔和渤海湾北部晚第四纪地质环境
THE HOLE D219 AND THE LATE QUARTERNARY PALEOGEOGRAPHIC ENVIORMENTS IN THE NORTHERN BOHAI BAY, CHINA
摘要
Abstract
Lithological,biological and chronological stratigraphic studies are carried out for the hole D219 which is located at the northern Bohai Bay.The deposits of the hole may be divided into four sets,i.e.marine-littoral facies,continental facies,marine facies and continental facies again in a descending order.Single well facies analysis reveals that seawater invaded into the northern Bohai Bay at 39 ka BP,corresponding to the Xian Country Transgression.It then retreated from the Bohai Sea at 23 ka BP.Around 8.5 ka BP the research area was covered by seawater again.Based on the data from D219 and another 30 boreholes,it is concluded that the northern Bohai Bay was a plain in Late Quaternary with two paleochannel systems.The topographic gradient of the plain is no more than 1.7％‰.The Nanpu River was small,but the Qikou River flowing from southwest to northeast was a meandering river with high discharge and multiple branches.关键词
渤海湾北部/晚第四纪/地层/古地形/古河道Key words
northern Bohai Bay/Late Quaternary/quaternary strata/ancient landform/paleochannel分类
天文与地球科学引用本文复制引用
胡广元,庄振业,印萍,赵东波,刘爽,王玲..D219孔和渤海湾北部晚第四纪地质环境[J].海洋地质前沿,2017,33(6):16-23,8.基金项目
国土资源大调查项目“中荷海岸带全球变化响应的比较研究”(1212010911072) （1212010911072）
福建省海岛与海岸带管理技术研究重点实验室项目(CIMIS-201601) （CIMIS-201601）
