absolute age
determined by where it falls in comparison to other rocks in a sequence, using principles such as superposition and cross-cutting relationships. It does not provide an exact numerical age but gives an idea of whether it is older or younger than surrounding rocks.
Geologists use radioisatope pairs to determine the age of rocks about 1 million years old. one pair is 238u which spontaneously decays to 206pb.
Rocks in ocean crust range in age from very young (less than a million years old) at the mid-ocean ridges to much older (up to hundreds of millions of years old) at the subduction zones. The age of ocean crust rocks provides valuable information about the history of tectonic plate movement and the evolution of the oceans.
The oldest continental rocks are around 4 billion years old. These rocks provide valuable information about the Earth's early history and can be found in regions such as Western Australia, Canada, and South Africa.
The estimated age of the Earth is approximately 4.54 billion years old. This age is determined through radiometric dating of rocks and meteorites, which provides insight into the formation of our planet.
1000 years
If your talking about granite that has turned yellow with age, it is the minerals corroding.
Age increases as we move further away from the MOR. Oldest rocks being of age 200 million years.
Stegosaurus fossils actually date to between 155 and 150 million years ago. Using various methods, paleontologists are able to determine the age of rocks. Then they know that fossils in those rocks are the same age as the rocks. In the case of Stegosaurus, they know the rocks are between 155 and 150 million years old, and they know the Stegosaurus fossils are the same age.
The oldest rocks at the bottom are nearly 2 billion years old. The youngest at the top are around 250 million years old.
5
Not all Canadian rocks are the same age. The oldest ones are about three and a half billion years old.
Igneous rocks do not have a specific age. They are formed from lava or magma cooling and solidifying, which can happen at any point in time. The age of an igneous rock can be determined through radiometric dating techniques.
4 - 4.6 billion years
542 million years ago
The approximate age of the solar system based on the oldest rocks that have been analyzed is 4.56 billion years.
The oldest rock are up to 125 million years old.