Origins of Earth’s magnetic field remain a mystery
Thursday, April 9, 2020 - 09:20
in Paleontology & Archaeology
Microscopic minerals excavated from an ancient outcrop of Jack Hills, in Western Australia, have been the subject of intense geological study, as they seem to bear traces of the Earth’s magnetic field reaching as far back as 4.2 billion years ago. That’s almost 1 billion years earlier than when the magnetic field was previously thought […]