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the oldest rocks on earth can be found in Greenland. They ar epreserved because they are always covered with a thin laye of ice.
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Are the oldest rocks on land or in the ocean?
The oldest rocks are found on land.
Why must the earth be older than its oldest rocks?
Two points here: rocks are solidified material--early Earth was molten. The first rocks appeared after the molten Earth cooled somewhat. Secondly, Earth's rocks are constantly being recycled through the 'rock cycle'. The oldest rocks on Earth have somehow survived those recycling efforts, but no rock found on Earth (other than some meteorites) is as old as the planet.
Some of the oldest rocks ever found have been estimated to be about 3.9 billion years old Is it likely that these rocks were present when Earth was first formed?
No. The fact that some of the oldest Earth rocks are over 4 billion years old indicates that Earth was in a molten state for around 300 million years. The first rocks would have formed on Earth from this molten material.
What evidence supports the hypothesis that Earth is 4.6 billion years?
Among other things, rocks have been found that are over 4 billion years old. The age of such rocks is determined by radioactive dating. Note that this is not "a" method, but perhaps 40 different methods (depending on the isotopes involved), which complement one another.The exact age of the Earth is harder to determine exactly; but basically, it must be at least as old as the oldest rocks found.
Where are the oldest fossils found in the earth and rock strata?
Acasta Gneiss, NW Canada--over 4 billion years old. Isua Supracrustal, W Greenland--3.8 billion years old. The oldest rocks on Earth are located in the Jack Hills of Australia. They are 4.4 billion years old!
In what country are the oldest rocks on Earth?
The oldest in-situ rock found on Earth to date was found in Northern Quebec in Canada and is dated as 4.28 billion years of age.
Are the oldest rocks on land or in the ocean?
The oldest rocks are found on land.
Why are the oldest rocks found on earth younger than the oldest lunar rock that Apollo brought back?
The Earth has lots of tectonic activity, by which I mean earthquakes and volcanoes, which the moon does not have. Rocks can survive longer on the moon.
Why are the oldest rocks found in Iceland?
Actually Iceland contains a very young rock landscape, with the oldest rocks dating back 14-16 million years ago. Some of the oldest rocks on earth are found in Greenland, dating back about 3.9 billion years.
Why must the earth be older than its oldest rocks?
Two points here: rocks are solidified material--early Earth was molten. The first rocks appeared after the molten Earth cooled somewhat. Secondly, Earth's rocks are constantly being recycled through the 'rock cycle'. The oldest rocks on Earth have somehow survived those recycling efforts, but no rock found on Earth (other than some meteorites) is as old as the planet.
Some of the oldest rocks ever found have been estimated to be about 3.9 billion years old Is it likely that these rocks were present when Earth was first formed?
No. The fact that some of the oldest Earth rocks are over 4 billion years old indicates that Earth was in a molten state for around 300 million years. The first rocks would have formed on Earth from this molten material.
What evidence supports the hypothesis that Earth is 4.6 billion years?
Among other things, rocks have been found that are over 4 billion years old. The age of such rocks is determined by radioactive dating. Note that this is not "a" method, but perhaps 40 different methods (depending on the isotopes involved), which complement one another.The exact age of the Earth is harder to determine exactly; but basically, it must be at least as old as the oldest rocks found.
How old are the oldest rocks found on the moons?
The oldest rock's found on the moon are 4.0 billion years old.
Some of the oldest rocks ever found have been estimated to be about 3.5 billion years old. Is it likely that these rocks were present when Earth was first formed?
No, rock material is constantly recycled on Earth as rock is melted into magma.
What is the oldest suburb in Australia?
Australia's oldest suburb is found in Sydney. It is the suburb of The Rocks.
Are the oldest rocks on Earth in the Grand Canyon?
Not hardly. The oldest rocks at the bottom of the Grand Canyon are around 2 billion years old. The oldest rock discovered on Earth of terrestrial origin is around 4.28 billion years old.
Where are the oldest rock?
Some of the oldest rocks found in North America have been on the Canadian Shield.
