carrotsandspiceadventures:This place was a geologists playground.You could see holes in the rocks wh
carrotsandspiceadventures:This place was a geologists playground.You could see holes in the rocks where they had taken samples.Holes like those are typically drilled by paleomagneticists. They take oriented cores to measure the magnetic field in a rock - those cores will be inserted into a magnetometer that monitors the magnetic field direction and intensity as surrounding conditions are changed. -- source link
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