how many billion of years ago?
thanks
2007-12-16 15:03:49 · 7 answers · asked by turk6060 3 in Science & Mathematics ➔ Earth Sciences & Geology
ofcourse i ment the Crust!! i know that its still molten inside......
now, any good answers please?
2007-12-16 15:21:00 · update #1
Earth is about 4.55 billion years old.
During its initial formation it was very hot and there was a lot of bombardment going on and a lot a radioactive decay.
Its difficult to put a number on when things began to cool and differentiate. But most agree it happened with in the first few 100 million years of Earth's existence.
And of course, the entire Earth is not solid. Rock is a very poor conductor of heat, therefore the outer core is still molten and Earth can generate enough heat to melt rocks into magma.
Lava isn't lava until it erupts from a volcano. Until then, it is called magma.
2007-12-16 15:15:11 · answer #1 · answered by Lady Geologist 7 · 0⤊ 1⤋
Evidence from radiometric dating indicates that the Earth is about 4.570 billion years old. The geological or deep time of Earth's past has been organized into various units according to events which took place in each period.
2007-12-16 15:10:39 · answer #2 · answered by Robert S 7 · 0⤊ 1⤋
It didn't and there is no proof that it did, just speculation.
Radiologic dating instruments are calibrated based on a certain set of flawed assumptions and should be construed as invalid. No one knows how old the Earth is or how it formed.
Acretion disk theory does not fit the laws of thermodynamics. It actually is contrary to them. Just because something gets bigger doesn't mean the laws of nature change for them.
2007-12-16 15:07:38 · answer #3 · answered by Meng-Tzu 4 · 0⤊ 2⤋
It's still molten lava
2007-12-16 15:12:45 · answer #4 · answered by oldguard11 3 · 1⤊ 1⤋
The commonly accepted age is 3.9 billion years ago.
2007-12-17 03:16:23 · answer #5 · answered by Amphibolite 7 · 0⤊ 1⤋
New land is still being formed from lava flow. Go to Hawaii Island to see for yourself.
2007-12-16 15:14:12 · answer #6 · answered by OKIM IM 7 · 1⤊ 2⤋
the first day, the earth was without form and void, and darkness was upon the face of the deep,..and that was only some 6000 plus years ago,..on the fourth day were the sun, moon and stars created,..it is quite unfortunate that some science is that flawed,..poor assumptions,..
i e a e,..
avatar of the unification,..
2007-12-16 18:12:45 · answer #7 · answered by avatar of the unification 3 · 1⤊ 3⤋