Plate tectonics, mountain building, and the Flood

Please Explain:
[1] - The origin & evolution of the ocean floor in your scenario.
[2] - What caused the ocean floor to uplift in the way that they did (mid-ocean ridges) and then subside.
[3] - The origin of the continents.--Bump------------------

"So, are you starting with a cloud of pure hydrogen right out of the BB or not?"
--I am at a loss as to where his reasoning comes from to support his premise of a 'pure hydrogen' interstellar cloud being anywhere (especially proceeding a Big Bang event).-------------------

My planetissimal is much to big to 'graze' the earth's atmosphere and then enter it. It does both in its final orbit.I accept that there is a great deal of kinetic energy to be converted
to heat. As I explained before, this heat can be dissipated in many different ways including the fragmentation of solid material and melting of this to form metamorphic rocks. Plenty of evidence of this everywhere-no need to do a calculation starting from uncertain assumptions as to size density and initial temperatures etc of the affected zones.

Sure Saturn has rings round its equatorial plane. Most probably formed by breaking up of other small moons as they spiralled in and came within the Roche limit. But equally your theory why these rings are in the equatorial plane also seems quite reasonable to me.
I have not sugested that continents were formed from these rings.

Everyone knows that kinetic energy can be converted to heat energy.As someone who looks at rocks and soils every day I am aware of the
tremendous heat that must have been involved in the creation of these materials and I am quite satisfied as to the source of this heat.If you think 'my model' violates Newton's laws and other physical laws as well maybe you can tell me why Mars has a small moon which is now in a spiralling orbit towards that planet.My understanding of the Roche Limit is that it only applies to invading bodies that are held together by their own gravity.
My planetissimal was held together by chemical bonding in much the same way as our Earth is. In this case the invading object can survive inside the Roche Limit. Anyway it actually helps my theory if some disintgration of the planetissimal had taken place-It would simply assist the spreading process that subsequently followed.

"I accept that there is a great deal of kinetic energy to be converted
to heat. As I explained before, this heat can be dissipated in many different ways including the fragmentation of solid material and melting of this to form metamorphic rocks. Plenty of evidence of this everywhere-no need to do a calculation starting from uncertain assumptions as to size density and initial temperatures etc of the affected zones. "
--The impact of the projectile sends shock waves traveling into both bodies. By the time that the shock waves have reached the back surface of the projectile the energy of the system is in four forms:[1] - kinetic energy of the projectile which is still moving;
[2] - internal energy of the projectile mostly in the form of shock compression;
[3] - kinetic energy of the target material; and
[4] - internal energy of target material, again mostly as shock compression.--When the shock wave has reached the end of the projectile a rarefaction wave travels backwards restoring some kinetic energy but also producing heat. Material is ejected, initially at low angles to the surface of the target but at speeds up to three times that of the projectile. Material ejected at a later time is a greater angles to the surface but travels more slowly. The final destination of the energy originally in the projectile is approximately--heat 31%, ejected material 49% and crushing(producing surface energy) 19% with the small residue going into spallation.--It is not at all certain how to extrapolate these results into the regime of a planetary collision in which there are many additional features:[1] - For bodies of comparable size there is no distinction between projectile and target.
[2] - The impact velocities and hence the shock compressions will be much higher than in any laboratory experiment.
[3] - The ejecta may be massive and their dispersion greatly influenced by gravitational forces.
[4] - Gravitational energy will be important for planetary bodies, especially in influencing their approach speeds.[Woolfson, 2000 - The origin and evolution of the solar system]-------------------

I have covered all the questions you ask in my book.
It probably wont interest you anyway because I get the feeling that you would rather stick with the theories for all these points that you have learnt from others. Thats fine by me. But the offer of a free copy of my book is still open if you really want to know what I believe about the things you ask.

"I have covered all the questions you ask in my book.
It probably wont interest you anyway because I get the feeling that you would rather stick with the theories for all these points that you have learnt from others. Thats fine by me. But the offer of a free copy of my book is still open if you really want to know what I believe about the things you ask. "
--If you will seriously send me a free copy, I wouldn't mind having it. You may send it to my address:Chris Grose
12925 Raysbrook Dr.
Riverview, Fl. 33569I hope to find much to chew on in your book.

It will in the post by air mail on Monday.

"It will in the post by air mail on Monday. "
--Many thanks.------------------

LRP:
My understanding of the Roche Limit is that it only applies to invading bodies that are held together by their own gravity.
My planetissimal was held together by chemical bonding in much the same way as our Earth is. In this case the invading object can survive inside the Roche Limit. Anyway it actually helps my theory if some disintgration of the planetissimal had taken place-It would simply assist the spreading process that subsequently followed.Except that the Earth's shape is mostly determined by its gravity and rotation. The maximum departures from a gravity/rotation-determined shape are Mt. Everest (~ +9 km) and the Mariana Trench (~ -11 km). And relative to nearby surface, the highest mountain is Mauna Loa in Hawaii, at about 9 km above the nearby ocean floor (Everest is near the Himalayan Plateau, and the Mariana Trench the ocean floor).The Everest-Mariana difference is 0.16% of the Earth's average diameter, and Mauna Loa's ocean-floor height is 0.7% of it.A mountain's height is controlled by the stresses at its base, and its amount of stresss is ~ (density)*(acceleration of gravity)*(height)Thus, the maximum height of a mountain scales a 1/(accel of gravity).A planetesimal/asteroid just above the Earth's surface would have a typical tidal acceleration of gravity of around ~0.1 Earth gravities, and scaling from Everest-Mariana and Mauna Loa yields a maximum size of ~100 km -- too small!

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My planetissimal was held together by chemical bonding in much the same way as our Earth is.

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The Earth is chemically bonded together?????? If the Earth got within Jupiter's Roche Limit, by spiralling in or any other way, it would shatter like a dropped light bulb. You're talking nonsense.

Roche's limit applies only to bodies that are held together by their own gravity-not for example aircraft and satellites and space shuttles etc that operate well within the limit. The moon has a thick skin of solid basalt and so will be certainly stressed if it comes within the Earth's Roche limit but should stay in tact.
Also Roches Limit applies to smaller bodies that try and orbit the larger ones-not crash into them fairly quickly.

I am at a loss to see your point-are you saying that only bodies less than 100kM in diameter will survive in the Roche Limit?

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--I am at a loss as to where his reasoning comes from to support his premise of a 'pure hydrogen' interstellar cloud being anywhere (especially proceeding a Big Bang event).

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Most theory predicts that the BB, after the material cooled, would produce mostly hydrogen and a very few other light elements. That part I understand. Calling it an 'interstellar cloud' is a bit weird, I guess, as there would as yet be no stars. But starting from a cloud of pure hydrogen you have to run through a couple of generations of stars to get the elemental compositions we see in the sun and earth, so what I don't understand is why the insistence on a pure hydrogen cloud? Why not drop that part? Doing so eliminates some nasty problems and I don't really see that it causes any theological trouble not already present in the 'pure hydrogen' model.------------------
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