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Ancient rain gauge: New evidence links groundwater, climate changes in deep time

A new study shows how groundwater is crucial for understanding global sea level change, chemical weathering and landscape evolution. Changes in groundwater millions of years ago created alternating layers of vivid yellow and brown in the mineral sphalerite, which align with movements in Earth’s orbit that impacted climate in the deep past.

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https://phys.org/news/2019-11-ancient-gauge-evidence-links-groundwater.html

 

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