耶路撒冷希伯来大学、海法大学及塔尔萨大学的研究团队通过整合三种先进测年技术，确认位于约旦河谷的‘Ubeidiya遗址拥有至少190万年的历史 1。这一发现将该遗址的年代推前了数十万年，使其与格鲁吉亚德马尼西（Dmanisi）遗址并列，成为非洲以外已知最早的人类活动遗迹之一 1。该研究成果发表于2026年的《Quaternary Science Reviews》期刊，具体引用编号为378卷第109871篇 1。
研究由Ari Matmon、Omry Barzilai和Miriam Belmaker教授领导，综合运用了宇宙成因核素埋藏测年法、古地磁测年法以及铀铅测年法 1。古地磁证据表明，该遗址沉积物形成于始于200多万年前Matuyama Chron时期 1。尽管初步测量曾显示部分岩石年龄约为300万年，但研究人员后续证实这并非原始沉积时间，而是由于死海裂谷中沉积物经历了重复搬运和再沉积所致 1。此外，考古分析揭示早期人类可能携带奥杜威（Oldowan）和阿舍利（Acheulean）两种不同的石器技术传统同时向外迁徙 1。
Researchers from The Hebrew University of Jerusalem, alongside colleagues from the University of Haifa and the University of Tulsa, have established that the 'Ubeidiya site in the Jordan Valley is at least 1.9 million years old 1. This finding, published in Quaternary Science Reviews, pushes back the previously accepted date for the site by hundreds of thousands of years, placing it on par with Georgia’s Dmanisi site as one of the oldest known locations of human activity outside Africa 1. The study was led by professors Ari Matmon, Omry Barzilai, and Miriam Belmaker, who combined three advanced dating techniques to resolve long-standing chronological uncertainties 1.
To achieve this precise dating, the team employed cosmogenic nuclide burial dating, paleomagnetic analysis, and uranium-lead dating 1. Paleomagnetic evidence indicated that the sediments formed during the Matuyama Chron, which began more than 2 million years ago 1. While initial measurements suggested some rocks were approximately 3 million years old, further investigation revealed these anomalies resulted from the reworking and redeposition of sediments within the Dead Sea Rift rather than original formation 1.
The research also reveals that early humans may have carried different stone tool traditions, specifically Acheulean and Oldowan, simultaneously out of Africa 1. These findings provide critical context for understanding how early hominins dispersed across Eurasia with distinct technological practices 1.
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