2006-11-06 07:34:22 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Two million years is incorrect. I believe 65 million is more like it. The reason the ocean floor is so young is that it is continually recycled by a process called subduction in the course of continental drift. In this process part of the sea floor is pushed (by seafloor spreading) beneath continents and remelted to emerge somewhere else at some other time. These subduction zones occur along the great oceanic trenches (to name a few, the Marianas Trench, the Japan Trench, and the Phillipines Trench). These are the deepest parts of the seafloor, and movement into them is the cause of some large earthquakes and much of the volcanic activity surrounding the Pacific Ocean (that activity is termed the Ring of Fire).
2006-11-06 07:43:07 · answer #1 · answered by David A 5 · 0⤊ 0⤋
Almost all ocean floor is older than two million years.(3)
The oldest well-dated crust on the ocean floor was drilled by the Ocean Drilling Program at site 801C in the northwestern Pacific It is about 167 million years old, Jurassic. Dated with isotopes(1) and with radiolarian microfossils(2) (Jurassic)
(1)Citation: Koppers, A. A. P., H. Staudigel, and R. A. Duncan (2003), High-resolution 40Ar/39Ar dating of the oldest oceanic basement basalts in the western Pacific basin, Geochem. Geophys. Geosyst., 4(11), 8914
(2) Bartolini and Larson, 2001, Geology.
Quite a bit of the Pacific and the Atlantic ocean floors are as old as Cretaceous--or older than 65 million years old.(3)Check out the map at url #3. All the green and blue areas of ocean floor are older than 65 million years.
2006-11-06 12:01:44 · answer #2 · answered by luka d 5 · 0⤊ 0⤋
There IS rock greater than 2 million years old!
Unlike Continental crust, Oceanic crust does get subducted, and is therefore younger. This may be what you had in mind.
Oceanic crust can be up to 180 million years old!
2006-11-06 07:43:49 · answer #3 · answered by Anonymous · 0⤊ 0⤋
molten rock is pushed up through a large crack in the Earth's crust. It cools, and more magma is pushed up, pushing the sides of the fissure apart as it does so. In this way, new sea floor is created and spread outwards from the ridge. Edit... I would have concurred with Kyna as well, but the question was a simple one and didn't require a novel... :-) Oh don't be such a bloody baby...
2016-05-22 04:57:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
The whole universe is just about 6200 years old. Why talk about a million years? Who told you millions of years? There's no proof for a million years. Show me one. Don't say fossils, they don't come with a date stamp on it. We just know something died. Not the carbon dating either, It has a major technically flawed assumption(mail me and i'll tell you what). God created everything around 6200 years ago. You can't create the whole universe with a single hydrogen atom. Are you in fairy land?
2006-11-06 16:35:33 · answer #5 · answered by SGK 2 · 0⤊ 0⤋
Quoted from http://www.ersdac.or.jp/Others/geoessay_htm/geoessay_e/geo_text_09_e.htm
"Among geologists, Greenland is a famous place for having various oldest rocks on earth, represented by sedimentary rock. Amongst others, the fact that rocks of 3.8 billion years ago exist in a place called Isua is quite famous. However, not many geologists can actually visit Isua. "
Considering these rocks exist there is no way that your data is accurate.
2006-11-06 07:43:46 · answer #6 · answered by I Ain't Your Momma 5 · 0⤊ 0⤋
Movement of tectonic plates and volcanic activity cause changes in the sea floor.
2006-11-06 07:42:23 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Who are you quoting? Who confirmed this information for you? How do you know for sure?
2006-11-06 07:38:05 · answer #8 · answered by Lynn K 5 · 0⤊ 0⤋