Meteorite crater discovered in French winery goetheuni
Meteorite craters which are still visible today are rare because most traces of the celestial bodies have long since disappeared again. This is due to erosion and shifting processes in Earth's crust, known asThe"Earth Impact Database" lists just 190 such craters worldwide.
Although this hypothesis was proposed by several geologists in the 1950s, it was dismissed by acclaimed colleagues a few years later. Frank Brenker explains,"Craters can form in many ways, and meteorite craters are indeed very rare. However, I found the various other interpretations of how this depression could have formed unconvincing from a geological perspective." That is why he and his wife collectedfor analysis in the labs at Goethe University Frankfurt—and indeed found the first signs of an impact crater.
The following year, Brenker took his colleague Andreas Junge, Professor of Applied Geophysics at Goethe University Frankfurt, and a group of students with him to Southern France to examine the crater in detail. They discovered that Earth's magnetic field is slightly weaker in the crater than in the surrounding area. This is typical for impact craters because the impact shatters or even melts the rock, which can thus contribute less to Earth's magnetic field.
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