Wuhan area located middle Yangtze River Basin, is dominated by East Asian Monsoon. Widely developed Holocene flu-lacustrine sediments are ideal materials for the reconstruction of paleoclimate change and geo-environment evolution, for which the chronology is a key issue. In this study, 20 luminescence dating samples were collected from a flu-lacustrine sequence and the reliability of the quartz OSL dating to these samples were checked by using luminescence characteristics of dose recovery test and thermos transfer test. Our results indicate that different grain size fraction of 4~11 μm, 38~63 μm, and 90~125 μm were well-bleached before burial. Dating results show that all these ages range from 0.8 ± 0.1 to 7. 9 ± 0.7 ka between 4.25 and 38.55 m, and most of them follow the stratigraphic sequence and other climatic recorder within the normal range of error. Disordered OSL ages may be caused by complicated transport-deposit processes. As a consequence, OSL dating method of SAR-SGC protocol could provide a significant chronology for Holocene flu-lacustrine sediment in large river depo-system.

中文翻译：

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武汉地区长江流域流感湖沉积物的全新世OSL年表

武汉地区位于长江流域中部，以东亚季风为主。广泛发展的全新世流感湖相沉积物是重建古气候变化和地球环境演变的理想材料，而年代学是一个关键问题。在这项研究中，从流感-湖泊序列中收集了20个发光测年样品，并通过剂量恢复测试和热水瓶传递测试的发光特性检查了石英OSL测年的可靠性。我们的结果表明，在掩埋之前，可以对4〜11μm，38〜63μm和90〜125μm的不同晶粒度进行很好的漂白。约会结果显示，所有这些年龄介于4.25和38.55 m之间，范围从0.8±0.1到7。9±0.7 ka，并且它们中的大多数都在正常误差范围内遵循地层层序和其他气候记录仪。OSL年龄混乱可能是由复杂的运输沉积过程引起的。因此，SAR-SGC协议的OSL测年方法可以为大型河流沉积系统中全新世的流感湖沉积物提供重要的年代学依据。