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Good questions.
originally posted by: Ohio_Ron
If "Expanding Earth Tectonics" is to be accepted, how does someone explain this:
www.globalpost.com...
and this:
en.wikipedia.org... (See Geology Section)
I'm stilll digging up info on the Cascade Range and the Wasatch Range. From what I have read so far, they, too, are growing. I'm sure other ranges have been listed as still growing, also.
Next question: If the earth is expanding, where is all this material coming from and will the Earth, eventually, become a hollow earth??
I'm not trying to diss anyone for there beliefs or research... but I'm trying to put forth legitimate questions. (Unless they have already been answered).
originally posted by: watchitburn
a reply to: intergalactic fire
It's interesting, but I don't think it adds up.
If the Earth were expanding by a constant rate of .6 mm a year, over 4.5 billion years that would come out to a bit less than 1,700 miles. Meaning that the Earth would have started out at around 6,200 mile in diameter. Bringing us to it's current size of 7,918 miles.
Using these numbers it does not fit with the expanding earth theory referenced in your sources.
No. Earthquakes do not affect the tilt of the Earth. Very large quakes can affect the figure axis of the Earth a very slight (and unmeasurable) amount. The movement of the tides and atmosphere have a greater effect.
The huge earthquakes we had in the last decade were observed to have moved the tilt of the earth.
Gross also estimates that the Chile earthquake shifted Earth's figure axis by about three inches (eight centimeters).
Deviating roughly 33 feet (10 meters) from the north-south axis around which Earth revolves, the figure axis is the imaginary line around which the world's unevenly distributed mass is balanced.
To explain the difference, Keith Sverdrup, a seismologist at the University of Wisconsin-Milwaukee, likened Earth to a spinning figure skater holding a rock in one hand. The rotational axis of the skater is still down the middle of the body, he said, but the skater's figure axis is shifted slightly in the direction of the hand holding the rock.
Even if 300,000,000 tons were added on a daily basis it would only expand the Earth's radius by 1% over a period of a billion years.
The material is being added by the tons each day from extra-planetary sources. The material would need to hit a subduction zone to be added to the crust and I feel it COULD expand the earth that way.
originally posted by: Phage
a reply to: Justoneman
No. Earthquakes do not affect the tilt of the Earth. Very large quakes can affect the figure axis of the Earth a very slight (and unmeasurable) amount. The movement of the tides and atmosphere have a greater effect.
The huge earthquakes we had in the last decade were observed to have moved the tilt of the earth.
Gross also estimates that the Chile earthquake shifted Earth's figure axis by about three inches (eight centimeters).
Deviating roughly 33 feet (10 meters) from the north-south axis around which Earth revolves, the figure axis is the imaginary line around which the world's unevenly distributed mass is balanced.
To explain the difference, Keith Sverdrup, a seismologist at the University of Wisconsin-Milwaukee, likened Earth to a spinning figure skater holding a rock in one hand. The rotational axis of the skater is still down the middle of the body, he said, but the skater's figure axis is shifted slightly in the direction of the hand holding the rock.
news.nationalgeographic.com...
Even if 300,000,000 tons were added on a daily basis it would expand the Earth's radius by 1% over a period of a billion years.
The material is being added by the tons each day from extra-planetary sources. The material would need to hit a subduction zone to be added to the crust and I feel it COULD expand the earth that way.
www.abovetopsecret.com...
It is thought that 300 tons of material arrive daily on average. I used 1 million times that amount (an absurdly high amount) to show how little of a change it actually represents. But why would added material build to a sudden lurch outward? If you spread material evenly over a surface does it suddenly reach a point where it would fluff up more? Why? The tendency is for dust to become more and more compacted, not to suddenly get poofity.
I would certainly think that 300 million tons daily could be enough over centuries to build to a critical point if the 'sudden lurch' theory is plausible.
Yes. On the order of, at the most, a matter of a few miles over the course of a billion years. It is an insignificant amount in comparison to the mass of the entire earth. Using the extremely exaggerated value, it means the circumference of the globe would increase by 238 miles (over a period of one billion years). Africa and South America have separated by more than 6 times that distance in less than 1/6th the amount of time. They didn't lurch apart, they have been, and still are moving away from each other for 140 million years.
It appears to me the earth would be expanding just by definition as the mere presence of the additional matter and it's accompanying mass are building up.
originally posted by: Phage
a reply to: Justoneman
I don't understand what is so attractive about the EEH. There is little evidence to support it and far more that supports plate tectonics. Is it a throwback to the idea that all the stars and planets circled the Earth? That the Earth itself is immobile? Does that give rise to the idea that continents can't move?
Yes. The small amount of matter accreting from space would be subducted just as tectonic plates are. Compared to the mass of the entire Earth the accreted amount, even if a million times greater than estimated, make an insignificant contribution to the size of the Earth.
It seems so obvious that the material being added to the planet gets pulled into the crust.
originally posted by: Phage
a reply to: Justoneman
Yes. The small amount of matter accreting from space would be subducted just as tectonic plates are. Compared to the mass of the entire Earth the accreted amount, even if a million times greater than estimated, make an insignificant contribution to the size of the Earth.
It seems so obvious that the material being added to the planet gets pulled into the crust.
Evidence does not show that the Earth expands. Evidence shows that the Earth has not expanded for at least 250 million years.
Evidence does show that tectonic plates move about. Evidence shows that that have done so relatively recently.