This is of course true and one must formulate the question more precisely. One must characterize meteor crater by size. Suppose that smaller craters assigned to meteors indeed have a tendency to appear inside larger craters. One would have a fractal like structure.
What is known about the size destribition of meteor craters and its correlation with the distribution of their locations? Is the fractal structure only an illusion: is it easier to spot the crateres if they are inside craters? Or is this tendency real? I do not know for certain but I can make what-if... questions.
I have proposed a model for the craters created in meteor collisions based on the TGD view of the magnetic body of a planet, say Earth (see this).
- The model was inspired by an anomaly: the meteor craters seem to favor meteor orbits orthogonal to the surface of the planet so that the craters tend to look like circular disks rather than ellipsoids.
- The craters assigned with meteor collisions could be created by matter, which arrives along magnetic flux tubes roughly perpendicular to the surface of the planet. Part of the material of the meteor could end up as dark, possibly charged, matter at the magnetic flux tubes or bundle of tubes. Since the friction and electric resistance of the dark matter inside the flux tube are much smaller than for ordinary matter, dark particles could achieve very high energies before collision with Earth. This would also explain the gamma rays and ultrahigh energy electrons associated with lightning.
- If the magnetic flux tube bundles form rather stable structures with fractal flux tubes inside flux tubes inside ... inside flux tubes, which emanate from larger craters, the meteors or the material created in their decay could tend to land in craters. This hypothesis should be testable. For instance, could lightnings have tendency to be associated with craters?
For a summary of earlier postings see Latest progress in TGD.