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What is the age of the oldest sea floor crust still preserved today?
Wiki User
∙ 15y ago
Ophiolites, pieces of oceanic crust that have been stranded on land, have been dated to 3.8 billion years of age in Greenland. Most oceanic crust in the oceans today dates from the Jurassic or younger, <200 million years old.
Wiki User
∙ 15y ago
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What is the oldest part of earth's crust?
The Nuvvuagittuq greenstone belt is the oldest part of earth's crust. Dating back 4.28 billion years old (the earth is estimated to be 4.6 billion years old), it is the only piece of land still known to exist pre-Archean era.
Where are the oldest oceanic floors in the world?
The oldest in-situ oceanic lithosphere is found at lithospheric subduction zones, where oceanic crust is being drawn into the mantle. These would normally be the point furthest away from its point of origin at the mid-ocean ridge.However the oldest remnant of oceanic crust found on earth dates from the early Archean when the lithosphere began to develop and are a product of obduction (where slivers of oceanic crust are thrust onto a continental crustal plate rather than below them). An example would be the Jamestown Ophiolite Complex of the Barberton greenstone belt in South Africa which formed approximately 3.5 billion years ago.
What Is the relation between age of oceanic crust and distance from divergent plate boundary?
When oceanic crust is still young, it's relatively warm. The older it gets, the colder it gets. The colder it gets, the less volume it takes in, however, it's still the same amount of matter. This causes a bigger density, thus causing the crust to sink deeper into the mantle.
Where were the most recently formed crust of the earth be found?
At the mid-ocean ridges where sea floor spreading occurs. The two plates separate and molten rock (basaltic magma) comes up from the mantle to "fill the gap" and creates new crust (oceanic lithosphere)
What thin layer of rock surrounds the earth?
That's called the crust. The size of the crust compared to the size of the Earth's mantle can be compared to the size of the radius of an apple as the mantle and the apple's skin as the thickness of the crust. the crust is broken up into several plates that float and move around on the mantle's molten surface.
What is the oldest part of earth's crust?
The Nuvvuagittuq greenstone belt is the oldest part of earth's crust. Dating back 4.28 billion years old (the earth is estimated to be 4.6 billion years old), it is the only piece of land still known to exist pre-Archean era.
Is the Danish flag the oldest flag still in use today?
It is the oldest NATIONAL flag still in use - it is not the oldest flag.
Why are the oldest rocks found on earth younger than the oldest lunar rocks that Apollo brought back from the moon?
The Earth is still tectonically active and because Earth has weather. The tectonic activity refreshes the crust as some plates are forced under others, removing old rock from the surface, and things like the sea floor spreading and volcanic activity producing all new crust. Additionally, the weather on the Earth constantly works to erode existing crust and wash it into the oceans.The moon is neither terctonically active nor is there weather. The moon is, in planetary science terms, dead. There is no process to remove old surface rocks and replace with new ones.
Why are the oldest rocks found on earth younger than the oldest lunar lock that Apollo brought back from the moon?
The Earth is still tectonically active and because Earth has weather. The tectonic activity refreshes the crust as some plates are forced under others, removing old rock from the surface, and things like the sea floor spreading and volcanic activity producing all new crust. Additionally, the weather on the Earth constantly works to erode existing crust and wash it into the oceans.The moon is neither terctonically active nor is there weather. The moon is, in planetary science terms, dead. There is no process to remove old surface rocks and replace with new ones.
What is the oldest site still online?
http://info.cern.ch/ is the oldest website still online
What is the oldest language still in common use?
sanskrit is the oldest language and it is still in use in HINDI rituals
Why is Denmark called the oldest kingdom?
Denmark is the oldest still existing kingdom in the world. Officially since 995 AD. Japan is the oldest still existing empire in the world and thereby the oldest monarchy.
What are the parts of a loaf or bread called the end pieces are called the heel The outside is called the crust The inside is called the crumb But what is the bottom crust called and the top crust?
It is still just called the crust. If you don't cut the bread into slices then the heels are still covered with the same thing... the crust.
Who is the oldest American gun maker?
Remington is the oldest maker still in operation.
What would be a good slogan for selling makeup?
tired of looking crust try this product and it will make you look less crust but you will still be crust:)
What is the oldest British Penny still in circulation?
The oldest British Penny potentially still in circulation would be the 1971 New Penny.
What is the oldest website on the internet?
http://info.cern.ch/ is the oldest website that is still online today
