| AMS ^14C测年揭示的渤海湾沿海低地第Ⅱ海相层年龄 |
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| 引用本文： | 王福,;陈永胜,;李建芬,;王宏,;方晶,;商志文,;田立柱,;姜兴钰,;施佩歆.AMS ^14C测年揭示的渤海湾沿海低地第Ⅱ海相层年龄[J].中国区域地质,2014(10):1591-1595. |
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| 作者姓名： | 王福 ;陈永胜 ;李建芬 ;王宏 ;方晶 ;商志文 ;田立柱 ;姜兴钰 ;施佩歆 |
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| 作者单位： | [1]中国地质调查局天津地质调查中心,天津300170; [2]中国地质调查局泥质海岸带地质环境重点实验室,天津300170; [3]天津地质矿产研究所年轻沉积物测年实验室,天津300170; [4]天津师范大学城市与环境科学学院,天津300387 |
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| 基金项目： | 中国地质调查局项目（编号：1212011120169、12120113005800）和国家自然科学基金项目（批准号：41476074） |
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| 摘 要： | 在渤海湾沿海低地地区获得4个机械钻孔，结合AMS 14C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。
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| 关 键 词： | AMS ^14C测年 Ⅱ海年龄 沿海低地 渤海湾 |
The age of the second marine layer in coastal lowland of Bohai Bay revealed by AMS^14C dating method |
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| Institution: | WANG Fu, CHEN Yong-sheng, LI Jian-fen, WANG Hong, FANG Jing, SHANG Zhi-wen, TIAN Li-zhu, JIANG Xing-yu, SHI Pei-xin (1. Tianfin Center, China Geological Survey, Tianjin 300170, China; 2. Key Laboratory of Muddy Coa＇st Geo-environment, China Geological Survey, Tianjin 300170, China; 3. Young Sediments Dating Laboratory, Tianjin Institute of Geology and Mineral Resources, Tianjin 300170, China; 4. College of Urban and Environmental Science, Tianjin Normal University, Tianjin 300387, China) |
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| Abstract: | 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. |
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| Keywords: | AMS ^14C dating age of the second marine layer coastal lowland Bohai Bay |
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