02  May  2017
Floor Fractured Craters


  By  Avani Soares  
astroavani.no.comunidades.net )


  The craters with the interior, or fractured floor, are among the most interesting of the Moon.
All right, you might even say that the large craters Copernicus and Tycho, which do not have a fractured interior are very interesting.
True, these two craters are very interesting, but do they have as many different things as fractured interiors?
Let us consider some examples of fractured craters such as Alphonsus, Posidonius, Gassendi and Petavius.
First, they are relatively large craters, with a raised interior and concentric related fractures.
Second, these and other fractured interior craters often have several types of channels, concentric craters and dark halo craters.
Some cracked interior craters are old enough not to have lightning (except the Taruntius),
because they already existed when the basalt seas were being produced, an event that ended approximately 3 to 2.5 billion years ago.
 Approximately all fractured interior craters are located on the shores of the sea and the current model is that magma
was born in the fractures of the basins and deposited under the craters, raising its interiors and generating eruptions of lava in its interiors.
In 1976, Pete Schultz was the first scientist to turn his attention to the fractured interior craters
and to highlight them as a modified class of impact craters, he even identified 206 of these craters but never published a list of them.


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