The production of high-resolution and accurate age models for lake sediments in the Tibetan Plateau (TP) is a prerequisite for subsequent paleoclimatic studies. However, Holocene lake sedimentary records with high-quality age controls from the TP are extremely scarce. Here we present the results of a comparative study of the results of the application of multiple dating techniques (¹⁴C, ²¹⁰Pb, ¹³⁷Cs) and a paleomagnetic secular variation (PSV) study of the sediments of Angrenjin Co in the southern central TP, during the last 3600 years. The PSV data are verified by comparison with a stacked PSV record from East Asia and with a global geomagnetic field model. The results of ¹⁴C-dating, validated by independent ²¹⁰Pb, ¹³⁷Cs and PSV dating, together with Bacon age modeling, indicate that the reservoir has an age range of ~2287 ± 58–6434 ± 165 years; in addition, the median offset ages estimated by the Bacon age-depth model range from ~1330 ± 428 to 3102 ± 513 years. This cross-dating approach effectively reduces dating uncertainties for lake sediments in the TP, and it can accommodate a variable reservoir effect. Comparison of the paleomagnetic inclination record from Angrenjin Co with previously published records from Tangra Yumco, Taro Co and Nam Co indicates an overall high degree of similarity, suggesting that the paleomagnetic data from different lakes in the TP are reproducible. In addition, the similar inclination patterns across this large region indicate a common geomagnetic origin.

青藏高原（TP）湖泊沉积物的高分辨率和准确年龄模型的产生是随后古气候研究的前提。但是，TP的高质量年龄控制的全新世湖沉积记录极为稀少。在这里，我们提供了对多种测年技术（¹⁴ C，²¹⁰ Pb，¹³⁷ Cs）的应用结果进行比较研究的结果，以及对TP中南部昂仁金公司沉积物的古磁长期变化（PSV）研究的结果，在过去3600年中。通过与来自东亚的堆积PSV记录以及全球地磁场模型进行比较，来验证PSV数据。^14次C约会的结果，由独立²¹⁰验证铅，¹³⁷ Cs和PSV测年以及培根年龄模型表明，该储层的年龄范围为〜2287±58–6434±165岁。此外，根据培根年龄深度模型估算的平均偏移年龄范围为〜1330±428至3102±513岁。这种交叉约会的方法有效地减少了TP中湖泊沉积物的年代不确定性，并且可以适应可变的储层效应。将Angrenjin Co的古磁倾角记录与Tangra Yumco，Taro Co和Nam Co先前发表的记录进行比较，表明总体上高度相似，这表明TP中不同湖泊的古磁数据是可重复的。另外，在这个大区域上类似的倾斜模式表明了一个共同的地磁起源。