Beneath the relentless stillness of the Atacama Desert, time has been accumulating in stone for far longer than science once imagined. Researchers at the University of Cologne, using rare isotopes born from cosmic rays striking ancient rock, have determined that the desert's hyperarid core has been locked in extreme dryness for roughly 45 million years — not the 10 to 20 million previously assumed. The cause was not the Andes or the cold Humboldt Current, as long believed, but a global cooling that preceded them both, with those forces arriving later only to deepen what was already written int
Eurasia Review
· Jun 05, 2026
· environment
· 4 min read
High
Sourcing: Verified
Atacama Desert's Extreme Aridity Dates Back 45 Million Years, Study Shows
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Bias & Framing
⚖
Scientific reporting on paleoclimate research with neutral, fact-based framing; minimal bias detected in presentation of geological findings and methodology.
Bias Direction
center
Confidence
HIGH
Straightforward scientific reporting emphasizing methodological rigor and revision of previous consensus; uses expert attribution and technical detail to establish credibility.
Potential limitations or alternative interpretations of the cosmogenic nuclide dating method
Perspectives from researchers who previously supported the 10-20 million year timeline
Implications for climate change or contemporary environmental concerns (notably absent)
Broader paleoclimatic context or competing theories about desert formation mechanisms
Geopolitical Impact
🌎
Geological study reveals Atacama Desert's hyperaridity dates to 45 million years ago, not 20 million as previously thought—a scientific finding with no direct geopolitical implications.
Escalation Risk
low
Confidence
HIGH
Economic Lens
📈
Ancient climate research reveals Atacama Desert's extreme aridity began 45 million years ago, not 20 million as previously thought, with minimal direct economic implications but potential long-term climate modeling applications.
Market Signal
neutral
Confidence
LOW
Scientific research and academia
Climate modeling and environmental services
Mining and resource extraction (long-term planning)
Agricultural technology and desert adaptation
No direct near-term consumer impact. Indirectly, improved climate models may inform long-term agricultural and water resource planning in arid regions, potentially affecting food prices and water availability in South America over decades.
May influence long-term climate change policy frameworks and environmental regulations in Chile and Peru regarding water management, mining operations, and desert conservation. Could support arguments for stricter environmental protections in hyperarid zones based on their extreme age and fragility.