| 摘要: |
| 于莱州湾南岸ZK32-1钻孔第三陆相层上下边界处选取自生钙质结核，采用样品全溶铀系等时线法（TSD法）测定钙质结核的年龄。测试结果表明，所有等时线上的数据都有很好的线性关系，表明所获得的年龄数据是合理的。通过对样品代表性的讨论，说明所选取的钙质结核的年龄确可代表其所在地层的年龄，从而得出莱州湾南岸第三陆相层的沉积起止时间为72.16 ka B.P.±7.41ka B.P.到45.34 ka B.P.±5.35ka B.P.的结论。本研究首次获得莱州湾南岸地层的铀系TSD年龄，为全面认识该地区晚更新世地层年代学提供了一个新视角。 |
| 关键词: 莱州湾南岸 第三陆相层 钙质结核 TSD法 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目（40276026） |
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| U-series Isochrone method (TSD) dating age of third continental facies at the south coast of Laizhou Bay |
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| Abstract: |
| In order to know the age of the third continental facies of the south coast of Laizhou Bay, authigenic calcrete nodules existed in the core ZK32-1 were sampled. The nodules existed in the layes and determined by the total-sample-dissolution isochron (TSD) techniques can be represented. The ages are 45.34 ka B.P.±5.35ka B.P. and 72.16 ka B.P.±7.41ka B.P. for the top and base layers of the continental facies respectively. They’re the first TSD data and consistent with previous research. |
| Key words: south coast of Laizhou Bay third continental facies calcrete nodules Total-sample-dissolution (TSD) |
