[meteorite-list] Impact Structures - Simple vs Complex?

[Larry Lebofsky]

Hi Jeff:

It has been some time since I studied this (will ask around here at the Lunar 
and Planetary Science Conference), but I think that it is basically: size 
matters!

How big of a hole can you maintain in a bowl shape before gravity and the 
strength of the material take over?

Larry

Quoting Jeff Kuyken <info at meteorites.com.au>:

> Here's a question for those of you more familiar with impact structures on
> Earth. I believe I saw somewhere that craters fall into 2 main categories?
> simple and Complex with the later having a central uplift, concentric rings,
> etc among other things.
> 
> My question is: How small can a complex crater be? Is there a definitive
> size restraint or does it completely depend on a multitude of variables such
> as the make-up of the impacting body, velocity, impact angle, target rock,
> etc?
> 
> Any help is appreciated,
> 
> Jeff Kuyken
> Meteorites Australia
> www.meteorites.com.au
> 
> 
> 
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-- 
Dr. Larry A. Lebofsky
Senior Research Scientist
Co-editor, Meteorite