鹤庆孔碳酸盐记录与深海δ^(18)O和黄土粒度记录的对比

COMPARISON BETWEEN CARBONATE RECORD OF HEQING CORE,δ^(18)O RECORD OF THE DEEP SEA AND GRAIN SIZE RECORD OF THE CONTINENTAL LOESS

通过天文调谐确定鹤庆孔时间标尺的基础上,对鹤庆孔碳酸盐含量曲线、深海δ18O曲线和黄土粒度曲线进行对比分析。结果显示:在中更新世转型过程中,鹤庆碳酸盐记录早于深海δ18O和黄土粒度记录,由此推测青藏高原隆升在中更新世转型中发挥重要作用。鹤庆碳酸盐含量曲线与深海δ18O曲线整体上对应较好,推测全球冰体积变化在西南季风演化中发挥重要的作用。

Based on the scale of time of Heqing core confirmed by astronomical tune, this paper compares the curve of carbonate content of Heqing core with that of the deep sea δ^18O and the loess grain size. The results show that the carbonate record of Heqing core is earlier than deep sea δ^18O record and the grain size record of the continental loess during the mid Pleistocene revolution, meaning that the uplift of Tibet Plateau plays an important role among the mid-Pleistocene revolution. Further, the curve of the carbonate content of Heqing core corresponds well with that of the deep sea δ^18O, reflecting that the change of the global ice volume plays an important role in the evolution of southwest monsoon.