A 2-Billion-Year-Old Clue Challenges a Popular Earth Science Theory - SciTechDaily
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A 2-billion-year-old rock formation is challenging what geologists thought they knew about Earth's ancient carbon cycle — and the disruption it points to was global.
Carbon Cycle TheoryPlate TectonicsSnowball Earth HypothesisBiogeochemical Cycling
Theory Briefing
- A geological clue dating back 2 billion years suggests Earth's carbon cycle underwent a major global disruption far older than previously understood.
- The finding challenges a popular Earth science theory, meaning the accepted timeline or cause of this ancient carbon shift may need to be rewritten.
- Carbon cycle disruptions at this scale are linked to dramatic changes in atmospheric chemistry, making the stakes of getting the history right very high.