Uncovering the Origins of India's Monsoon
The story of India's monsoon typically begins with the Himalaya, but a recent study of fossil leaves from Nagaland reveals a surprising twist.
Geography textbooks often state that the rising mountains blocked winds, drew in moisture, and gave birth to the seasonal rains. However, the discovery of fossil leaves in the Indo-Burma range, specifically in the Laisong Formation, dates back approximately 34 million years to a time of significant change in Antarctica.
During this period, vast ice sheets began to spread across the southern continent, reshaping global winds and currents. The surprising finding is that the effects of these changes extended to the tropics of Asia, where the fossilized Nagaland leaves indicate heavy rains and a warm, wet climate.
The fossil leaves are more than just relics; their size, edges, and veins carry climate codes, providing valuable insights into the past.
The leaves tell of heavy rains and a warm, wet climate.
Autor's resume: New study reveals monsoon origin.
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