Magnetic Field Reversals and Extinctions: The Correlation Won't Go Away.
This article explores the scientific debate regarding the potential correlation between Earth's geomagnetic pole reversals and mass extinction events. It notes that while reversals are chaotic and difficult to predict, researchers continue to study their history through paleomagnetism.
Why it matters
Understanding geomagnetic history is crucial for assessing potential long-term environmental risks to Earth's biosphere.
Is there a link between Earth's geomagnetic reversals and extinctions? Nobody has proven it, despite their efforts. But the idea just won't go away.
The Earth's magnetic poles haven't remained consistent over the planet's 4.5 billion year history. It's experienced multitudes of pole flips, or geomagnetic reversals, where its north and south poles swap positions.
Scientists rely on paleomagnetism to detect them. Paleomagnetism detects the orientiation of Earth's poles across geological time in lava and sediments. The orientation of magnetic minerals in lava and ancient sediments record the locations of the poles at the time they solidified or accumulated.
Get smarter about the news
Sign up free for a feed built around what you actually care about, Dive Deeper research on any story, and the full text of every article.
Create free accountAlready have an account? Sign in