This is a continuation of the original thread I started about a presentation I saw given by John Baumgardner. The threads are as follows.
Part 1: Sharing and discussing my general impression of the presentation as well as going over some of the "flood geology" he used that has potentially gone unexplored on this forum. If these get deep enough they can be branched into sub topics.
Part 2 (this thread): Discussing some of Baumgardner’s claims for catastrophic plate tectonics some of which I had not heard before. While we all know the basic fundamental problems with it, such as the fact that it would fry the earth, there were a number of strange claims that he made that I would like to share with you.
Most everyone here who has debated about Baumgardner’s runaway plate tectonics probably knows the basic principle. Somehow God made the earth topsy turvy with denser than normal oceanic lithosphere. This dense lithosphere slowly starts to sink into the mantle at plate boundaries and at some point accelerates due to some stress properties of silicate rock. The mid ocean ridges go crazy created new ocean floor and boil off enough ocean water to have it rain all over the globe for a month. The continents move apart from each other at a rate of meters per second. After all the dense lithosphere makes it into the mantle the system is at equilibrium and all is calm.
Here are some interesting other properties of runaway subduction that Baumgardner brought out that I would like to debunk aside from the basic absurdities of whole continents prancing about the globe in a matter of months.
1. The subduction of the lithosphere at convergent boundaries was strong enough to temporarily “pull” the entire continent lower into the mantle making it easier to flood. Continents not being fishing bobbers aside, do the physics of matter sorting itself out due to density differences actually support this as plausible (remember other absurdities aside).
2. Seismic profiles of the earth show an anomalous blob of mantle material that is too cold to have existed in the mantle for very long. This material is 4000 degrees cooler then the rest of the mantle and represents the initial dense/cold lithosphere that kicked off the runaway subduction. Has anyone actually heard of this?
3. Evidence of runaway subduction also exists on Venus. There are huge landscapes on Venus that are “fresh” and the properties of recent meteor impacts show that they impacted on new crust. This I suppose is supposed to lend weight to the possibility of runaway subduction although I don’t know why God would why to much of Venus the same way he did Earth (not a topic for this thread, stick to Venus and the claim therein)
Geo and Great Flood please.
{Added the "catastrophic plate tectonics" part to the topic title. - Adminnemooseus}
This message has been edited by Adminnemooseus, 03-13-2006 05:27 PM
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