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Tag: Plate Tectonics

Geomagnetic Field and Atmospheric Oxygen: A 540-Million-Year Correlation

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…

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Unveiling the “Ghost Plume”: A Hidden Mantle Plume and its Implications for Earth’s Thermal Evolution

Unveiling the “Ghost Plume”: A Hidden Mantle Plume and its Implications for Earth’s Thermal Evolution

Unveiling the “Ghost Plume”: A Hidden Mantle Plume and its Implications for Earth’s Thermal Evolution Recent research published in Earth and Planetary Science Letters suggests the existence of a previously unknown “ghost plume” beneath Oman. This discovery challenges our understanding of Earth’s internal heat transfer and could significantly alter existing models of planetary evolution. Unlike typical mantle plumes, which are associated with surface volcanism, this “ghost plume,” termed the “Dani plume” by researchers, shows no surface volcanic activity. Its presence…

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