N-alkane δDwax record of a 10 m core in Lake Qinghai, Northeastern Tibetan Plateau, China

In 2005, core 1Fs were drilled from the deposition-center of the southwestern basin of lake. The upper 5 m of core is composed mainly of dark gray to light brown lacustrine silty clay or clay with horizontal bedding. The 5-9 m section of core consist of gray and grayish-yellow silty clay with silt layers. The lower part of core consist of light brown and gray silty clay, loess-like silt and fine sand layers. δDwax of n-alkane in upper 10 m of 1F core were anlysed and the data of 0-5 m have reported in Liu et al. (2017). This dataset contains the complete δDwax of n-alkane C31 above 10 m of 1F core and sample depth. The age model was based on 14C chronology reported in An et al. (2012). Reference 1. Liu et al., Quaternary International, 449 (2017), 67-74. 2. An et al., Scientific Reports, 2 (2012), 619.

2005年，研究人员从某湖泊西南盆地的沉积中心钻取了1F号岩芯。该岩芯上部5米段主要由深灰色至浅棕色的湖相粉质黏土或黏土组成，发育水平层理；岩芯5~9米段以灰色及灰黄色粉质黏土夹粉砂层为主；岩芯下部则由浅棕色、灰色粉质黏土、类黄土粉砂及细砂层构成。研究人员对1F岩芯上部10米内的正构烷烃（n-alkane）蜡质氢同位素（δDwax）开展了分析，其中0~5米段的相关数据已由Liu等人（2017）发表。本数据集包含1F岩芯10米以上层位中正构烷烃C31的完整δDwax数据及对应采样深度。本数据集的年代模型基于An等人（2012）发表的14C年代学（14C chronology）结果构建。参考文献：1. Liu等，《第四纪国际（Quaternary International）》，449（2017），67-74；2. An等，《科学报告（Scientific Reports）》，2（2012），619。