Hi Mark
As mentioned before, glacier transport is probably the most probable answer.
Roman
--------------------------------------------------
From: "Mark" <[email protected]>
Sent: Saturday, January 08, 2011 5:20 PM
To: "Roman Jirasek" <[email protected]>;
<[email protected]>; "Larry Atkins" <[email protected]>
Subject: Re: [meteorite-list] Shattercone?
But doesn't that beg the question of transport? How did a Sudbury
shattercone get to Lapeer County, MI? So fas as I know, all of the remote
Sudbury ejecta remnants found to date have been largely fine-grained,
strata-bound deposits.
Does anyone know of any instance of a recognizable shattercone being found
at a substantial distance (>200 km) from the actual impact site?
Mark
----- Original Message -----
From: "Roman Jirasek" <[email protected]>
To: <[email protected]>; "Larry Atkins"
<[email protected]>
Sent: Saturday, January 08, 2011 3:11 PM
Subject: Re: [meteorite-list] Shattercone?
The light grey colour reminds me of my shattercones from the
Wanapitei crater near Sudbury. Nice find.
Cheers,
Roman Jirasek
www.meteoritelabels.com
--------------------------------------------------
From: "Dan Wray" <[email protected]>
Sent: Saturday, January 08, 2011 1:31 PM
To: <[email protected]>; "Larry Atkins"
<[email protected]>
Subject: Re: [meteorite-list] Shattercone?
Hi Larry,
This looks pretty good to me. While is is always hard to judge by
photos it looks consistant with Sudburry. I have collected shatter
cones in New Mexico at the Sante Fe site and have a number of others
including Sudbury in my collection.
Dan Wray
COMETS
----- Original Message -----
From: "Larry Atkins" <[email protected]>
To: <[email protected]>
Sent: Saturday, January 08, 2011 10:18 AM
Subject: [meteorite-list] Shattercone?
Hello List,
I found this interesting rock close to my home in Lapeer County
Michigan while walking in the woods this past September. It looks like
a shatter cone to me but I've really no experience with them. One
peculiar characteristic of the rock is that it's not smooth. All the
rocks here have been smoothed and rounded during their glacial
transport. I wonder if it's from Sudbury and was relatively close to
home so it didn't have to travel very far and didn't erode too bad?
I did a few internet searches and didn't find any reference to impact
debris being found in this area.
Any shattercone/impact experts out there?
Comments and thoughts appreciated.
http://s934.photobucket.com/albums/ad190/alienrockfarm/
Sincerely,
Larry Atkins
IMCA # 1941
Ebay username alienrockfarm
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