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SUMMARY
Despite the success that standard plate-tectonics theory has enjoyed, there are phenomena that it currently is not able to model. Perhaps the most adequate model would incorporate Owens' suggestion that there is both subduction and expansion. This would allow the earth to expand at a modest rate with reasonable changes in surface gravitation and also require some subduction for which the evidence seems convincing. But such a model presents the difficulty of finding suitable mechanisms for expansion, plate motion and subduction!
Finally, a week-long workshop on the lithosphere convened by the U.S. Geodynamics committee in 1982 noted that "no generally accepted models exist for the initiation of [subduction]", "rates and mechanisms of assimilation of models for the heating of subducted slabs¼[are] wholly inadequate¼", and "gravity profiles across subduction zones and the published geoid data do not reflect the thermally predicted excess mass" (Lithosphere 1983, pp. 28, 29).
If the mass of the Earth is increasing by 40 tons a day and the density of that mass is about the same as the Earth (it may be a little less), then the Earth is probably expanding by a proportional amount, which for the 4th time is too small to measure because it's less than measurement uncertainty, and in fact several studies including one you cited yourself show no statistically significant expansion of the Earth's radius, which exceeds measurement uncertainty.
originally posted by: All Seeing Eye
Is there anyone who is willing to consider partial expansion?
Past sea level
During the most recent ice age (at its maximum about 20,000 years ago) the world's sea level was about 130 m lower than today, due to the large amount of sea water that had evaporated and been deposited as snow and ice, mostly in the Laurentide ice sheet. Most of this had melted by about 10,000 years ago.
Ancient Sea Rise Tale Told Accurately for 10,000 Years
Without using written languages, Australian tribes passed memories of life before, and during, post-glacial shoreline inundations through hundreds of generations as high-fidelity oral history. Some tribes can still point to islands that no longer exist—and provide their original names.
Dwarka. Mythical City Found Under Water?
Mainstream scientists maintain that ancient Indian culture/civilization goes back some 4-5 thousand years. Yet the ruins below the Gulf of Cambay go back at least 9 thousand years, i.e. to the time when the area submerged under water.
2012: Magnetic Pole Reversal Happens All The (Geologic) Time
Reversals are the rule, not the exception. Earth has settled in the last 20 million years into a pattern of a pole reversal about every 200,000 to 300,000 years, although it has been more than twice that long since the last reversal. A reversal happens over hundreds or thousands of years, and it is not exactly a clean back flip. Magnetic fields morph and push and pull at one another, with multiple poles emerging at odd latitudes throughout the process. Scientists estimate reversals have happened at least hundreds of times over the past three billion years. And while reversals have happened more frequently in "recent" years, when dinosaurs walked Earth a reversal was more likely to happen only about every one million years.
You've got the cart pulling the horse there. Scientists think the horse pulls the cart instead, which makes more sense to me. I can fully understand how the hypotheses the scientists describe might work using principles of physics, but I can't understand any physics behind your cart pulling the horse scenario, I don't think there is any.
originally posted by: All Seeing Eye
So when this reversal happens one might start to imagine that the plates will respond. And any Model of the Earth, should take this into consideration. I would imagine that the expansion rate could become "Statistically Relevant", at the very least.
So those researchers think "the movements of rocks outside the core" influences magnetic reversals, not the other way around, as you suggest.
the further the centre of gravity of the continents moved away from the equator, the faster the rate of (geomagnetic) reversals (up to eight per million years for a maximum degree of asymmetry).
What does this suggest about the mechanism behind geomagnetic reversals? The scientists envisage two scenarios. In the first, terrestrial plates could be directly responsible for variations in the frequency of reversals: after plunging into the Earth's crust at subduction zones, the plates could descend until they reach the core, where they could modify the flow of iron. In the second, the movements of the plates may only reflect the mixing of the material taking place in the mantle and particularly at its base. In both cases, the movements of rocks outside the core would cause flow asymmetry in the liquid core and determine reversal frequency.
What you seem to neglect is that there are reasons the old view have changed, and you don't seem to be aware of the evidence that led to these changes in thinking. Scientists didn't just wake up on a different side of the bed one day and decide to use a different model. There are reasons why we have the models we do today, and one of them is we know more than we used to because we've collected more data.
As with all previous Geologists they viewed this naturally as a earth that is and or has expanded, in the past.
During ice ages, there is ice below the polar regions. The location that is now New York City for example would have been covered in ice so deep that not even the tallest skyscrapers would come close to the top of the ice which was a mile thick. The Laurentide ice sheet was so extensive it covered not only almost all of Canada but also some of the northern US like New York City, which isn't considered a "polar region".
It appears a great deal of real estate has been lost, to the sea. The question is, could it all have come from melting polar ice caps? Can the polar Ice caps have held that much frozen water?
Says Dr. D.P. Agrawal, chairman of the Paleoclimate Group who is responsible for establishing Carbon-14 laboratories in India: "To date a city on the basis of a dredged sample of wood is irresponsible and ridiculous. I have worked with the Paleoclimate Group on the changes in climate over the ages. It is a known fact that during the Ice Age, about 20,000 years ago, the Arabian Sea was 100 metres lower (than its present level). Entire forests are buried beneath the sea in this area. It is not extraordinary to find a piece of wood going back to 7500 B.C. or 5000 B.C. There is no way it can be used as evidence to date this so-called city."
What you seem to neglect is that there are reasons the old view have changed, and you don't seem to be aware of the evidence that led to these changes in thinking. Scientists didn't just wake up on a different side of the bed one day and decide to use a different model. There are reasons why we have the models we do today, and one of them is we know more than we used to because we've collected more data.
There is no argument. Im not debating whether the city is there or not. Im certain there were other evidences involved to make the determination.
Apparently Gulf of Khambat is the more modern name for the Gulf of Cambay, so he's talking about the same region mentioned in your post.
It is only conformation of the date. 7500BC is 9500AD. Which puts it in the 10,000 year ball park. For my point is not about the city itself, but of dry land, globally. Forests do nicely in pointing that out.
Entire forests are buried beneath the sea in this area. It is not extraordinary to find a piece of wood going back to 7500 B.C. or 5000 B.C. There is no way it can be used as evidence to date this so-called city."
My point is that this reversal is inbred into the molten rock. I do not state the cause of the reversal. Only that the plates may be effected by the reversal, maybe even in a grand way.
You've got the cart pulling the horse there. Scientists think the horse pulls the cart instead, which makes more sense to me. I can fully understand how the hypotheses the scientists describe might work using principles of physics, but I can't understand any physics behind your cart pulling the horse scenario, I don't think there is any.
I said reasons as in plural and I posted an example here. Your reply to that post only showed you don't understand the current model, even though I posted a simple video explaining that, but you don't seem to understand the model. You also said something about there not being evidence the plate being subducted is moving toward the plate under which it's subducting, but there is evidence for such movement, which when coupled with that earthquake graph is enough to convince the scientific community subduction is occurring. If it fails to convince you, that's inconsequential.
originally posted by: All Seeing Eye
Please, post that reason.
Yes, you think the cart may be pulling the horse because you don't understand physics. Neither of the scientific hypotheses have the proverbial cart pulling the horse as in your speculation.
originally posted by: All Seeing Eye
My point is that this reversal is inbred into the molten rock. I do not state the cause of the reversal. Only that the plates may be effected by the reversal, maybe even in a grand way.
You also said something about there not being evidence the plate being subducted
originally posted by: All Seeing Eye
a reply to: Arbitrageur
You also said something about there not being evidence the plate being subducted
I have asked if Science has suspected areas of subduction in the Atlantic Ocean. And if not, why not?
I have pointed out the original "Atlantic" body of water, which predates the present day ocean by hundreds of millions of years. Would not Science suspect subduction to initiate in the oldest water beds first?
Where is Subduction in the Atlantic?
originally posted by: All Seeing Eye
a reply to: AngryCymraeg
Your link reminds me of something Issac Newton had said.
" A man may imagine things that are false, but he can only understand things that are true, for if the things be false, the apprehension of them is not understanding.
— Isaac Newton"
Again, if there were any logic, or for that matter, reality concerning subduction, one would expect it to display a reoccurring methodology. To suggest two earthquakes hundreds of years apart is the beginning of a subduction zone, is purely, imagination.
As I understand the scientific method, there first must be an "Observation". I do not reject science, or its method. "After observing something, a scientist tries to explain what has been seen. The explanation is called an hypothesis."
So, if you fail to understand the science you therefore reject it
I understand what is being taught, and I reject it, because it is not science.
Oh and thanks for thinking in human time, not geological time. You really, really, don't understand the processes involved, do you?
Before I do that, name the person who witnessed subduction, post his evidence, not, his theory.
originally posted by: AngryCymraeg
a reply to: All Seeing Eye
(Hysterical laughter)
For political reasons???? Seriously?
Oh, please, name those reasons!
originally posted by: oldcarpy
a reply to: All Seeing Eye
Errrrm, seeing as how subduction occurs at depths down to around 670km you are rather asking the impossible, I suspect that you know that.
Come now, what are these "political reasons" of yours? Do tell.
Yes, taken out of context, Subduction, is impossible, and yes, I know that......
asking the impossible, I suspect that you know that.
Now you're just trolling, you already admitted subduction has happened so by now saying it's impossible you're contradicting yourself.
originally posted by: All Seeing Eye
Yes, taken out of context, Subduction, is impossible, and yes, I know that......
originally posted by: Arbitrageur
So you've admitted that subduction occurs but your theory has no subduction. That's a little hard to follow frankly.
originally posted by: All Seeing Eye
a reply to: Arbitrageur
Thanks for pointing that out.
So you've admitted that subduction occurs but your theory has no subduction. That's a little hard to follow frankly.
I should of said, has occurred, in the past. And, this type of subduction has gone dormant.