[meteorite-list] Minimum crater size for central uplift ?

[MexicoDoug at aol.com]

michel wrote:

>I was wandering what is  the minimum size of terrestrial impact crater
>that show a central uplift.  

Hola Michel, Would that be the B.P. Structure in Libya?  It is  around 2 km 
in diameter, but relatively older than the other nicely formed  craters like 
Meteor Crater...  Perhaps in the Libyan-Argelian environment,  it could be 
pushed a bit lower than 2km in diameter, especially with an  energetic iron 
impactor to form a complex (central-uplifted) crater, though the  physicists might 
place a theoretical limit on this taking into consideration the  properties of 
the ground zero and the value gravity on Earth.  The greater  the gravity the 
more likely a complex crater, so Earth ought to have the  smallest diameter 
complex craters in the known Solar System without having to  wade through the 
clouds of gas giants to see if a stable surface could be found  with craters.
Saludos, Doug