近年来,科学界和公众对全球环境变化的重视与日俱增。作为全球环境变化研究的一个重要分支,古气候研究也成为科学研究的热点之一。古气候研究在很大程度上有赖于建立高分辨率和具有精确年代标尺的环境和气候记录,以理解过去全球变化的历史、规律和机制;而其中非常关键的一环就是获取精准的年代尺标。在过 In recent years, the scientific community and the public have attached increasing importance to the global environmental change. As an important branch of global environmental change research, paleoclimate research has also become one of the hot spots in scientific research. Paleoclimate research relies to a large extent on the establishment of environmental and climatic records of high resolution and accurate scales of time to understand the history, laws and mechanisms of past global changes; the key to this is to obtain accurate chronology Standard. In the past