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Author Topic:   Back to the fundamentals
gene90
Member (Idle past 3822 days)
Posts: 1610
Joined: 12-25-2000


Message 61 of 65 (28920)
01-12-2003 4:11 PM
Reply to: Message 55 by Watson
01-11-2003 6:27 PM


Mineral hardness doesn't change. Quartz cannot be as hard as a diamond.
What labs did these analyses?

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 Message 55 by Watson, posted 01-11-2003 6:27 PM Watson has not replied

  
John
Inactive Member


Message 62 of 65 (28924)
01-12-2003 4:54 PM
Reply to: Message 60 by gene90
01-12-2003 4:08 PM


quote:
Originally posted by gene90:
All your craters are terrestrial.
Reasonable, yes, since Lake Erie is also terrestrial?
quote:
One concern about terrestrial craters is that they're a bit too round. There don't seem to be any craters the shape of the proposed Erie depression on Earth. This could be because of physics involved with our thick atmosphere.
Ok, but I am missing why this is important given that we are talking about the Earth at a time when it had pretty much the same atmosphere as now? Do you suggest that something may have distorted the ordinary pattern an impact leaves on Earth? Maybe the assumption that the asteroid hit a glacier? Something like that?
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No webpage found at provided URL: www.hells-handmaiden.com

This message is a reply to:
 Message 60 by gene90, posted 01-12-2003 4:08 PM gene90 has replied

Replies to this message:
 Message 63 by gene90, posted 01-12-2003 5:26 PM John has replied

  
gene90
Member (Idle past 3822 days)
Posts: 1610
Joined: 12-25-2000


Message 63 of 65 (28927)
01-12-2003 5:26 PM
Reply to: Message 62 by John
01-12-2003 4:54 PM


quote:
Reasonable, yes, since Lake Erie is also terrestrial?
Perhaps reasonable. You realize that there are few craters on Earth and plenty on other planets, therefore, you could find a lot of better arguments than simply saying that this doesn't look like terrestrial craters. That there are no blatantly elliptical craters is not evidence against a proposed crater merely because it is elliptical. In fact, I have heard that there's a possible elliptical in South America, and meteoritic material has been found.
quote:
Ok, but I am missing why this is important given that we are talking about the Earth at a time when it had pretty much the same atmosphere as now?
I feel that it is important to point out that there may be a reason why there are no known ellipticals. I am not claiming that there are no ellipticals to find or that they cannot be produced in our atmosphere however it is a distinct possibility that there are no ellipticals to find.
I personally am sitting on the fence.
[This message has been edited by gene90, 01-12-2003]

This message is a reply to:
 Message 62 by John, posted 01-12-2003 4:54 PM John has replied

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John
Inactive Member


Message 64 of 65 (28933)
01-12-2003 6:58 PM
Reply to: Message 63 by gene90
01-12-2003 5:26 PM


quote:
Originally posted by gene90:
You realize that there are few craters on Earth and plenty on other planets
I realize this. Our atmosphere burns up a lot of small objects, the oceans absorbs a lot -- we wouldn't have much record if a meteor hit the ocean unless it was a very large one-- and plate movement erases a great deal as well.
quote:
therefore, you could find a lot of better arguments than simply saying that this doesn't look like terrestrial craters.
He's got the chance to prove his theory. I haven't denied that it is a crater, though I am far from convinced that it is. But the first thing I thought of was to look for some similar craters elsewhere on Earth. Further scrounging around has turned up no craters that resemble this one IMO, but maybe it is a fluke. I think the rocks he is talking about may tell a much better tale than anything.
------------------
No webpage found at provided URL: www.hells-handmaiden.com

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Watson
Inactive Member


Message 65 of 65 (29138)
01-14-2003 8:13 PM
Reply to: Message 59 by gene90
01-12-2003 3:59 PM


I sent you some pictures. Maybe this will help.
I know this is all new to you.

This message is a reply to:
 Message 59 by gene90, posted 01-12-2003 3:59 PM gene90 has not replied

  
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