Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Northern Crater Shows Prehistoric Deep Impact
Alaska Science Forum ^ | July 7, 1998 | Ned Rozell

Posted on 08/28/2004 11:49:33 AM PDT by SunkenCiv

To the rhinos and crocodiles of the far north, the day was like any other. They ate, swam and napped, unaware a celestial body was headed their way at 60,000 miles per hour. Suddenly, a wayward comet screamed into the atmosphere, struck Earth and created a bowl a mile deep and 15 miles in diameter.

(Excerpt) Read more at dogbert.gi.alaska.edu ...


TOPICS: Arts/Photography; Books/Literature; Cheese, Moose, Sister; Education; History; Hobbies; Reference; Science; Travel; Weird Stuff
KEYWORDS: archaeology; arctic; catastrophism; extinction; ggg; godsgravesglyphs; haughton; paleontology; schoch
I'll ping the list when I get home.
Mars On Earth: Arctic Crater Reveals Martian Secrets (pt 2)
Haughton Crater is the remaining scar from a high-speed collision between Earth and some heavy object from space about 23 million years ago. The comet or asteroid that created the crater was perhaps more than a mile (up to 2 kilometers) across and slammed into the forest that existed on Devon Island. Everything was annihilated for scores of miles in all directions. The impact churned up rock from more than a mile below the surface, vaporizing much of it. It's estimated that between 70 and 100 billion tons of rock was excavated from the crater in the moments just after the impact. While clouds of dust and gas filled the air, rock rained down from the sky, much of it in the form of what geologists now call breccia, which simply means "broken up." Scattered within the breccia are pieces of a rock called gneiss that normally is dark and dense. In Haughton Crater breccia, the "shocked gneiss" resembles pumice stone -- it's ash-white, porous and very lightweight.
Voices of the Rocks
by Robert Schoch
and Robert Aquinas McNally
(pp 1-3)
other supplier
"Yet, as it will, life returned to this site of complete devastation... The world those fossils described, the one that flourished on the order of 20 million years ago, during the early Miocene epoch, was strikingly different from today's Arctic... Devon Island was covered with a forest of birch trees and conifers, a landscape that one now finds about 2,000 miles to the south, in Minnesota, Wisconsin, and Maine. Now-extinct forms of rhinoceros and mouse deer browsed among the trees; shrews and pika-like relatives of modern rabbits darted through the shadows; and freshwater fish swam the lakes and streams...

"Even farther back, on the order of 45 to 65 million years ago, during the Paleocene and Eocene epochs, the fossil record shows Devon Island to have been still more profoundly different. Back then, what is now the Arctic was a region of swampy lowlands, slow-moving rivers, and towering forests of dawn redwood, kadsura, and ancestral forms of hickory, elm, birch, sycamore, and maple. Primitive fishes, crocodiles, salamanders, newts, and turtles inhabited the rivers and marshes, while the forests and meadows supported flying lemurs, early primates, forerunners of today's cats and dogs, and ancestors of the rhinos, tapirs, and horses."


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)

1 posted on 08/28/2004 11:49:34 AM PDT by SunkenCiv
[ Post Reply | Private Reply | View Replies]

To: blam; FairOpinion; Ernest_at_the_Beach; SunkenCiv; 24Karet; 4ConservativeJustices; A.J.Armitage; ...
[pat travers] Boom boom, what is it? [crowd] out go the lights!
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)

2 posted on 08/29/2004 3:46:07 PM PDT by SunkenCiv (Unlike some people, I have a profile. Okay, maybe it's a little large...)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv
What the global warming people don't say is that a lot of these sites were also above the arctic circle millions of years ago, too, yet warm-weather creatures lived there.
3 posted on 08/29/2004 3:51:25 PM PDT by Question_Assumptions
[ Post Reply | Private Reply | To 1 | View Replies]

To: Question_Assumptions
Well, the areas had warmer climates anyway. :')
4 posted on 08/29/2004 4:19:53 PM PDT by SunkenCiv (Unlike some people, I have a profile. Okay, maybe it's a little large...)
[ Post Reply | Private Reply | To 3 | View Replies]

To: SunkenCiv

It's all George Bush's fault!


5 posted on 09/15/2004 8:03:33 AM PDT by Valin (I'll try being nicer if you'll try being smarter.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Valin
:') Well, he made the final decision, but it was still all Karl Rove's idea. Oh, and I think Drudge was involved in some way.
George W. Bush will be reelected by a margin of at least ten per cent

6 posted on 09/15/2004 8:28:47 AM PDT by SunkenCiv (Unlike some people, I have a profile. Okay, maybe it's a little large...)
[ Post Reply | Private Reply | To 5 | View Replies]

 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic ·
 

· join list or digest · view topics · view or post blog · bookmark · post a topic ·

 
Gods
Graves
Glyphs
Just updating the GGG info, not sending a general distribution.

To all -- please ping me to other topics which are appropriate for the GGG list.
GGG managers are Blam, StayAt HomeMother, and Ernest_at_the_Beach
 

· Google · Archaeologica · ArchaeoBlog · Archaeology magazine · Biblical Archaeology Society ·
· Mirabilis · Texas AM Anthropology News · Yahoo Anthro & Archaeo ·
· History or Science & Nature Podcasts · Excerpt, or Link only? · cgk's list of ping lists ·


7 posted on 07/16/2008 9:41:02 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_________________________Profile updated Friday, May 30, 2008)
[ Post Reply | Private Reply | To 1 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson