That results in a range that spans decades, not centuries.

采用地断代推时间范围是几十年，而不是几百年。

Stratigraphy, which looks at the soil layers in which artefacts are found, tells you only which ones are older and which younger.

而地采用方法是通过对已发现古代物土壤进行探测分析，从而判断土壤年代远近。

In fact, the geologists known as stratigraphers who determine the geologic timescale, have proposed a start date for the Anthropocene around 1950.

事实上，确定地质时间尺度地地质已经提了 1950 年左右人类世开始日期。

Official ratification of the Crawford Lake site and the Anthropocene epoch requires passing three more votes of geological authorities, the subcommission on Quaternary Stratigraphy, the International Commission on Stratigraphy and finally the International Union of Geological Sciences.

克劳福德湖遗址和人类世时代正式批准还需要经过地质当局、第四纪地小组委员会、国际地委员会和国际地质科联合会三次投票。