Freethought & Rationalism Archive

Coragyps · 08-02-2002, 02:31 PM

I like it! And 65 million years old, too, perhaps out of the same litter as Chixulub?

Valentine Pontifex · 08-02-2002, 04:39 PM

Here is an interesting note from the BBC on an impact crater. I am sure Patrick can make good use of it...

<a href="http://news.bbc.co.uk/2/hi/science/nature/2164058.stm" target="_blank">http://news.bbc.co.uk/2/hi/science/nature/2164058.stm</a>

Coragyps · 08-07-2002, 06:29 PM

I just read the article on this astrobleme (why not "space zit?") in Nature. (1 Aug 2002, v. 418, pp 520-523) It's a good one to go after Noah's Flood fans with: smack in the middle of the Cretaceous chalk, of Cliffs of Dover fame, with maybe three to four kilometers of oil- and fossil-bearing sediments below, and up to 1.5 km of newer sediment above. The structure looks like a big (20-km) bulls-eye, with the rings of the bulls-eye formed by circular, nearly vertical faults, seen as paleocliffs up to 50 meters tall. Now the Chalk is made up of tiny skeletons, or tests, of coccolithophorids, if I have the right plankton. They had to grow, die, settle, and then slowly lithify to make rock. I doubt that all this sediment, from the Rotliegendes 4 km down up to the top of the chalk, could have hardened enough to hold a 50-meter cliff in a year, but I'm sure the geologists at AiG will come up with a "theory."
And I nearly forgot - one of the formations far below the crater is the Zechstien Salt - plain old table salt up to maybe a kilometer thick in some areas. It's particularly hard to deposit during a flood.

08-02-2002, 04:39 PM	#2
Valentine Pontifex Veteran Member Join Date: Jul 2001 Location: Orion Arm of the Milky Way Galaxy Posts: 3,092	Impact Crater in the North Sea Here is an interesting note from the BBC on an impact crater. I am sure Patrick can make good use of it... <a href="http://news.bbc.co.uk/2/hi/science/nature/2164058.stm" target="_blank">http://news.bbc.co.uk/2/hi/science/nature/2164058.stm</a>

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08-02-2002, 02:31 PM	#1
Coragyps Veteran Join Date: Aug 2001 Location: Snyder,Texas,USA Posts: 4,411	I like it! And 65 million years old, too, perhaps out of the same litter as Chixulub?

08-07-2002, 06:29 PM	#3
Coragyps Veteran Join Date: Aug 2001 Location: Snyder,Texas,USA Posts: 4,411	I just read the article on this astrobleme (why not "space zit?") in Nature. (1 Aug 2002, v. 418, pp 520-523) It's a good one to go after Noah's Flood fans with: smack in the middle of the Cretaceous chalk, of Cliffs of Dover fame, with maybe three to four kilometers of oil- and fossil-bearing sediments below, and up to 1.5 km of newer sediment above. The structure looks like a big (20-km) bulls-eye, with the rings of the bulls-eye formed by circular, nearly vertical faults, seen as paleocliffs up to 50 meters tall. Now the Chalk is made up of tiny skeletons, or tests, of coccolithophorids, if I have the right plankton. They had to grow, die, settle, and then slowly lithify to make rock. I doubt that all this sediment, from the Rotliegendes 4 km down up to the top of the chalk, could have hardened enough to hold a 50-meter cliff in a year, but I'm sure the geologists at AiG will come up with a "theory." And I nearly forgot - one of the formations far below the crater is the Zechstien Salt - plain old table salt up to maybe a kilometer thick in some areas. It's particularly hard to deposit during a flood.

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