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Date Time Oldest human traces from southern Tibetan Plateau in a new light For the first time, Michael Meyer and Luke Gliganic from the Department of Geology at the University of Innsbruck have used a new optical dating technique to directly constrain the age of prehistoric stone artefacts from an archaeological site southern Tibet. The findings are more than 5,000 years old and thus the oldest evidence of human presence in this part of the Tibetan Plateau. Stone tools have been made by humans and their ancestors for millions of years. For archaeologists these rocky remnants – lithic artefacts and flakes – are of key importance. Because of their high preservation potential they are among the most common findings in archaeological excavations. Worldwide, numerical dating of these lithic artefacts, especially when they occur as surface findings, remains a major challenge. Usually, stone tools cannot be dated directly, but only when they are embedded in sediment layers together w

Michael meyerMount everest cho oyuLuke gliganicUniversity of innsbruckDepartment of geologyLuminescence laboratoryOptically stimulated luminescenceSurface burialTibetan plateauScience advancesHe rockEarth sciencesமைக்கேல் மேயர்பல்கலைக்கழகம் ஆஃப் இந்ந்‌ஸ்ப்ரக்துறை ஆஃப் புவியியல்ஒளிர்வு ஆய்வகம்