Geomagnetic Field and Atmospheric Oxygen: A 540-Million-Year Correlation
Geomagnetic Field and Atmospheric Oxygen: A 540-Million-Year Correlation New research reveals a strong, previously unknown correlation between Earth’s geomagnetic field strength and atmospheric oxygen levels over the past 540 million years. Both parameters exhibit parallel increases, with a notable spike between 330 and 220 million years ago. The study utilized two independent datasets: paleomagnetic data from ancient rocks reflecting geomagnetic field strength, and sedimentary records indicating atmospheric oxygen levels (e.g., charcoal abundance). A strong positive correlation was observed between these…