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To: medved
From VadeRetro's Link:

This already creates a new problem, for, as Taylor himself pointed out all the way back in Hunten et al. (1983), so much heat transported through the crust should cause slumping in large topographic features. PV, and prior Earth based radar measurements, were not consistent with such an internal heat source. He also realized that to provide such heat through volcanism was inconsistent with our knowledge of volcanism on the Earth. This lead Taylor to openly reject the idea, long before Mr. Holden had come up with it (Hunten et al. (1983), P. 658).

[...]

Another constant claim is that the Magellan images show a "fresh, young" surface on Venus, and this supports the claim of "awesome" volcanism. This claim, however, also does not stand up to examination. Here, see for instance, Schaber et al. (1992). They mapped a database of 874 craters over 89% of the surface of Venus. The craters ranged from 1.5 to 280 kilometers in diameter, and are randomly distributed over the surface. Of these, 62% are pristine, and only 4% are embayed by lava flows. If Venus were subject to current "awesome" volcanism, or if it was even in the fairly recent past, it is hard to explain why only 4% of its surface craters would be embayed. See also Strom et al. (1994), and Bullock et al. (1993).

Mr. Holden derisively complains about scientists and their "resurfacing fairy", and insists that the obvious real explanation is a Velikovskian young Venus. However, this is seen to be just another bald assertion, once again unsupported by facts, or the reasonable interpretation of facts. The studies cited here clearly explain the logic and methods behind their determination of the age of the resurfaced areas, through cratering statistics. Anyone in doubt can read and judge for themselves.

In short, the surface features of Venus are all consistent with what one would expect to see on an old Venus. The tell-tale signs of a young Venus are not there. No help for the Velikovskian so far, but the worst is yet to come.

Now, you may not agree with what's been presented, but don't say your points haven't been addressed.

394 posted on 03/15/2002 1:07:58 PM PST by Junior
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To: Junior; medved
From the link: Of these, 62% are pristine, and only 4% are embayed by lava flows. If Venus were subject to current "awesome" volcanism, or if it was even in the fairly recent past, it is hard to explain why only 4% of its surface craters would be embayed.

Gads! All those craters on a planet so young. And so little vulcanism to wipe them out!

Funny, the earth, moon, and Mars took their most massive hits 4 billion years ago when there was still a lot of loose debris from the formation of the solar system. You'd almost think Venus is an old, stony-crust planet with exactly the same kind of history.

396 posted on 03/15/2002 1:13:31 PM PST by VadeRetro
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