[SunkenCiv]

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FR Lexicon·Posting Guidelines·Excerpt, or Link only?·Ultimate Sidebar Management·Headlines
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[SunkenCiv]

A catastrophism ping, but just to the GGG managers.

Please FREEPMAIL me if you want on, off, or alter the "Gods, Graves, Glyphs" PING list --
Archaeology/Anthropology/Ancient Cultures/Artifacts/Antiquities, etc.
The GGG Digest -- Gods, Graves, Glyphs (alpha order)

[SunkenCiv]

If the great mass extinctions are not attributed to impacts (e. g., explained instead by episodes of volcanism or sea regressions), one must ask how the huge impacts that must have occurred failed to leave dramatic evidence in the fossil record.

I love that particular point. The only answer that satisfies all the available data is, "delusional belief system". :') If experience is any guide, the delusional parade is going to begin, and I won't have to save my spot along the route for very long. :')

[mgc1122]

It's a small point but isn't a "near Earth impact" actually a "miss" ? And wouldn't the impact from a miss be zero?

[blam]

Did Asteroids And Comets Change The Tides Of Civilisation?

[Publius6961]

I agree.
The National Education Association sucks!

[SunkenCiv]

The Day the World Burned
by David A. Kring
and Daniel D. Durda
Scientific American
November 27, 2003

The cataclysm went far beyond the regular insults from which living things must recover. The asteroid or comet flashed through the sky more than 40 times as fast as the speed of sound. It was so large that when its leading edge made contact with ground, its trailing edge was at least as high as the cruising altitude of a commercial airliner. It produced an explosion equivalent to 100 trillion tons of TNT, a greater release of energy than any event on our planet in the 65 million years since then... The crater, called Chicxulub after modern Maya villages in the area, is approximately 180 kilometers in diameter and is surrounded by a circular fault 240 kilometers across, apparently produced when the crust reverberated with the shock of the impact...

The Chicxulub impact event caused the dinos to go extinct.

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FR Lexicon:Posting Guidelines:Excerpt, or Link only?:Ultimate Sidebar Management:Headlines
PDF to HTML translation:Translation page:Wayback Machine:My Links:FreeMail Me
Gods, Graves, Glyphs topic:and group:Books, Magazines, Movies, Music

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[SunkenCiv]

BTTT

[SunkenCiv]

bttt

[SunkenCiv]

[SunkenCiv]

both of these are pretty small asteroids:

2006 JY26
1 in 185 chance
http://neo.jpl.nasa.gov/risk/2006jy26.html

2000 SG344
1 in 556 chance of Earth impact
http://neo.jpl.nasa.gov/risk/2000sg344.html

[SunkenCiv]

old topic, updating standard ping message. Found while looking for Clark Chapman refs on FR.

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[SunkenCiv]

• NASA Mariner 4 page

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