Research on the quake off the coast of Chile?? is even more interesting.
A stronger quake with a 5.9 on the scale and several weaker ones have occurred there in the last 8 hours, some of them at a depth of 10 km.

But if you look at the region of the coast in picture mode, the lines on the sea floor immediately catch the eye ...

How do these, sometimes hundreds of kilometers long and at exactly right angles, get to the sea floor?

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