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Will new insights on magnetic fields' impact on early life forms be discovered by 2025?
4
Resolution / Starting Odds
Yes • 50%
No • 50%
Peer-reviewed publications in geology and biology
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MIT, Oxford Find Oldest Earth's Magnetic Field Evidence, Dating 3.7 Billion Years
Apr 27, 2024, 07:30 PM
Recent research by geologists at MIT and Oxford University has uncovered ancient rocks in Greenland that contain the oldest known remnants of Earth's magnetic field, dating back at least 3.7 billion years. This discovery, indicating that Earth's magnetic field was already at half-strength at that time, provides new insights into the history of our planet's magnetism, including evidence of many more magnetic pole shifts. Benjamin Weiss from MIT highlighted the significance of this finding, noting that this period coincides with the time when life is believed to have been emerging.
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3.7 to 4 billion years • 33%
4 to 4.5 billion years • 33%
Older than 4.5 billion years • 34%
North America • 25%
Europe • 25%
Asia • 25%
Australia • 25%
Radiometric Dating • 25%
Magnetic Mineral Analysis • 25%
Isotopic Dating • 25%
Paleomagnetic Studies • 25%
Astrobiology • 33%
Geology • 34%
Technology Testing • 33%
Supports Existing Theories • 33%
Challenges Existing Theories • 33%
No Significant Impact • 34%
Confirmation of active volcanic centers • 25%
Evidence of recent volcanic eruptions • 25%
Discovery of new mineral types • 25%
Detection of organic compounds • 25%