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

采用地层断代推算出时间范围是几十年，而不是几百年。

Just published in geology by Aaron matching a geocrinologist at Melbourne University suggests.

刚刚由墨尔本地层家Aaron Matching发表在地质上研究建议。

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

而地层采用方法是通过对已发现古代文物土壤层进行探测分析，从而判断土壤年代远近。

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.

克劳福德湖遗址和类世时代正式批准还需要经过地质当局、第四纪地层小组委员会、国际地层委员会和国际地质联合会三次投票。