Hmmm.
Looks to be in pretty good shape for nearly two billion years old. Even figuring 1.5 billion, It should have seen 1500 ice ages, no?
Can’t be. The earth is only 9,000 years old. /sarcasm
Thought it was 6,000 but made to look several billion...
Hmmm.
Looks to be in pretty good shape for nearly two billion years old. Even figuring 1.5 billion, It should have seen 1500 ice ages, no?
A billion here, a billion there — pretty soon you’re talking about a long time.
Disclaimer: I am not a geologist, a cosmologist or a climatologist, but I am very familiar with the Sudbury Crater as a result of morons commenting on the "toxic" nickel used in hybrid car batteries...
First of all, the age of 1.85 billion years for the impact introduces ridiculously complex factors into the find.
At least three glaciations took place affecting the entire area since then. Finding evidence of the impact there is meaningless. How far did the glaciers move the stuff? Was it in a terminal morraine?
Shouldn't the fragments be long buried?
Could these be evidence of secondary impacts (calving) not subject to glaciation?
Who's on first?