Hi Jeff, yes it does depend mainly on the size of the impactor and its
velocity and the gravitational force of the body being impacted, Complex
craters on the moon have a different set of minimum diameters than on Earth,
yes there is an actual formula for it, I have lost it at the moment, this
question does re-appear every now and then, if you locate the formulae for
working it out, please let me know.
Cheers, Kevin, VK3UKF.
From: "Jeff Kuyken" <[EMAIL PROTECTED]>
To: "Meteorite List" <[email protected]>
Subject: [meteorite-list] Impact Structures - Simple vs Complex?
Date: Wed, 15 Mar 2006 23:01:29 +1100
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FILETIME=[E38B8660:01C64885]
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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