[meteorite-list] Changes In 14C and Impacts

[Sterling K. Webb]

Paul, Ed, List,

The village is actually named "Kitscoty."
https://en.wikipedia.org/wiki/Kitscoty 

Kitscoty is named after a village in
Kent (U.K.) with a famous stone
megalithic structure, so while Googling 
for a Kitscoty Structure you have to 
distinguish which Kitscoty and what 
kind of structure is meant.
http://albertacommunityprofiles.com/Profile/Kitscoty/2

The "structure" referred to is a proposed 
"rebound" plateau of an impact south of 
Kitscoty, Alberta, Canada:
http://www.meridianbooster.com/2009/03/18/did-a-massive-meteor-touch-down-he
re

I don't know (and am not going to Google 
myself to death finding out), but I recall 
that Hudson Bay and the Canadian 
Shield is very old crust, at least 2.0 to 
2.5 billion years old. 

It is bound to have evidence of a great 
many impacts in that long time span, 
but most, of ancient age. Plus, the 
Canadian Shield has been scoured by 
every ice age for billions of years, over 
and over and over again. Only evidences 
that can survive that will be found.

With typical human short-sightedness,
most theories of any explanation of a
feature in Northern Canada are always
referred to "the last Ice Age," which is 
only the last few million years, while 
the Shield is immensely more ancient 
and has been exposed for BILLIONS of 
years.

Northern Canada contains a great
many craters; see:
http://www.thelivingmoon.com/43ancients/02files/Earth_Images_09.html#Steen

I can suggest another very ancient crater:
the south-southeastern coast of Hudson
Bay, above James Bay is a portion of
a perfect circle and it has a nice cluster 
of islands at the geometric center of 
that circle like the remnants of central 
peaks. I've always thought that it could 
be what's left of a very, very  ancient
 "astrobleme." See map at:
http://www.worldatlas.com/aatlas/infopage/hudsonbay.htm

It's very suggestive. But evidence? I
know of none.

Sterling Webb
----------------------------------------------------------

-----Original Message-----
From: Meteorite-list [mailto:meteorite-list-bounces at meteoritecentral.com] On
Behalf Of E.P. Grondine via Meteorite-list
Sent: Sunday, June 28, 2015 10:53 AM
To: meteorite-list at meteoritecentral.com
Subject: [meteorite-list] Changes In 14C and Impacts

Hi Paul - 

Thanks for the link to that paper.

I am looking forward to your comments on the Kiscoty structure.

My guess is that the depth of the ice sheet may be estimated from the height
of the rebound, but I am incapable of performing detailed calculations from
any formula you may know of.

My working assumption is that nearly all of the energy released from the
initial blast went into different processes which  melted the ice sheet -
such as the infra-red,  the boiling water returning to Earth, the hot impact
dust returning, etc.

E.P. Grondine
Man and Impact in the Americas

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