For decades, scientists viewed it as a young river system, but modern research suggests a far more ancient origin. As the mountains rose over the past 25 million years, they created a rain shadow and forced moisture-laden winds to release their precipitation into the basin.
Amazon River Geological Age Evidence: Tracing the River's Ancient Origins
Determining how old is the Amazon River requires piecing together evidence from geology, paleontology, and hydrology. The river did not flow continuously in its modern form.
Biodiversity and the Ancient Flow. The Andes: Architect of the River The age of the Amazon is inseparable from the growth of the Andes.
Amazon River Geological Age Evidence: Tracing the River's Ancient Origins
The water we see today flows through a channel that has evolved over millions of years, shaped by shifting landscapes and changing climates. Findings indicate that a proto-Amazon river system was flowing across South America approximately 9 to 10 million years ago, during the Miocene epoch.
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