摘要
在渤海湾沿海低地地区获得4个机械钻孔,结合AMS14C测年方法,对Ⅱ海的年龄进行了研究。结果显示,在Ⅱ海所在层位获得的14C样品年龄均大于43.5ka BP,说明渤海湾沿海低地地区Ⅱ海形成于MIS 3早期或MIS 5,而不是前人认为的23~39ka。建议在前人地层结构研究成果的基础上,系统开展Ⅱ海年龄研究。
Four drilling cores were collected from coastal lowland of Bohai Bay, and AMS^14C dating method was used to study the age of the second marine layer in coastal low land of Bohai Bay. The dating results of the samples collected form the second marine layer show that the ages are all older than 43.5ka BP, which indicates that the formation of the second marine layer occurred in early MIS3 or MIS 5 rather than 23-39ka as previously considered. Based on previous stratigraphic studies, the authors hold that systematic investigation should be carried out for the age of the second marine layer on coastal lowland of Bohai Bay.
出处
《地质通报》
CAS
CSCD
北大核心
2014年第10期1591-1595,共5页
Geological Bulletin of China
基金
中国地质调查局项目(编号:1212011120169
12120113005800)
国家自然科学基金项目(批准号:41476074)
关键词
AMS
^14C测年
Ⅱ海年龄
沿海低地
渤海湾
AMS ^14C dating
age of the second marine layer
coastal lowland
Bohai Bay
