A new geochemical study reveals that ancient human species (hominins) living around 800,000 years ago made highly conscious choices when crafting stone tools, rather than using random materials from their surroundings. Researchers traced the chemical fingerprints of ancient tools and identified that these early humans deliberately selected specific basalt sources for different stages of tool production. This discovery is significant, as it demonstrates that human ancestors possessed far more advanced environmental knowledge, planning capabilities, and long-standing technological traditions than previously assumed.
Chemical Fingerprints Unveil the Secret
Scientists analyzed the geochemical properties of stone tools from ancient periods and found that their raw materials match exposed or buried basalt flows existing today. The analyses show that ancient humans did not simply take the nearest stone and shape it, but instead engaged in deliberate searches for basalt with the optimal hardness and structure for specific tool types and production stages.
Technology Passed Down Through Generations
According to researchers, this behavior indicates that hominins living hundreds of thousands of years ago had a deep understanding of their environment and could plan ahead for which stone would serve which purpose. The repeated use of specific basalt sources over long periods suggests that this knowledge and technological preference were transmitted across generations, evolving into a social tradition. Additional sources and further reading are available at [1].
References and Further Reading
Image & News Source: Phys.org - Archaeology & Fossils / phys.org