I'm a freelance geologist working mostly in the Eastern Alps. I graduated in 2007 with a project studying how permafrost, that´s frozen soil, is reacting to the more visible recent changes of the alpine environment.
, a steady stream known as solar wind. But up to now, there has been no reliable date for when the modern magnetic field was first established.
"Extracting reliable records from rocks this old is extremely challenging, and it was really exciting to see primary magnetic signals begin to emerge when we analysed these samples in the lab.
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