Author Topic: Monday 20 February 2012 - Exploding Boulders!  (Read 9773 times)

ElisabethB

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Re: Monday 20 February 2012 - Exploding Boulders!
« Reply #15 on: November 04, 2012, 06:46:21 pm »
Got another (maybe) two !

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Geoff

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  • The history of astronomy is a history of receding horizons. - Hubble.
Re: Monday 20 February 2012 - Exploding Boulders!
« Reply #16 on: November 06, 2012, 07:03:58 am »
Nice find Els! Will have to look at the NAC strip to get the larger picture.

DAYO DAYO

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Re: Monday 20 February 2012 - Exploding Boulders!
« Reply #17 on: December 21, 2012, 06:46:31 pm »
Sorry I didn't reply before, but I am surprised at the spread of the bits.  I know we don't have a scale for them but it looks quite forceful and I can imagine flakes jumping off the surface due to stresses. However what I notice most is the ground colour which is dark around,  and yet these objects are lying in a pale field that follows their pattern of deposition. Is it a light trick or  what is it ?
Edit. And spalling is not confined to the hot sunside but at the top- all around.   However it is a smaller boulder, and perhaps there is an understandable process going on here.  Needs some other feedback from you Geo people. I can "sort of see it" but haven't got clarity yet.
« Last Edit: December 21, 2012, 07:00:16 pm by DAYO DAYO »

jules

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Re: Monday 20 February 2012 - Exploding Boulders!
« Reply #18 on: December 21, 2012, 07:36:06 pm »
Not sure the experts have an explanation beyond what Tony Cook says here. I note we haven't collected many examples for them to study. Maybe these are elusive as well as puzzling.
« Last Edit: December 21, 2012, 07:38:37 pm by jules »

ElisabethB

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Re: Monday 20 February 2012 - Exploding Boulders!
« Reply #19 on: April 27, 2013, 05:59:56 pm »
bottom center left - a definte maybe ?  ;D
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