Posted on 08/11/2010 5:32:45 AM PDT by decimon
The silliness on FR falls mainly on the plain.
When I was a kid in the early 1950’s Life magazine had some wonderful series about the history of the Solar system, and another one on the evolution of life on earth. They had another one about the development of civilization. Wonderful paintings in all of them, the great days of Life. In any case they used theory number 1 for the earth moon twin planet.
Northern Crater Shows Prehistoric Deep ImpactTo 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.
by Ned RozellMars 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"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...
by Robert Schoch
and Robert Aquinas McNally
(pp 1-3)
other supplier
"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."
Amazing what a difference a couple of years (koff koff) can make, eh?
I remember when you could generally believe Newsweek.
Thanks for articulating that way better than I did.
That's the theory I've seen the most of lately.
Eisenhower was president? :’)
It comes from the 1980s, possibly the early 1980s, and maybe even the 1970s; I remember having a photocopy of a Popular Science article on the impact origin model posted on the door where I worked sometime in the 1980s, to give the customers something to read (and keep their hands off my desk) while I grabbed something they needed. :’)
Actually, I think it was Truman.
:’D
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