That is when you look at the amount of decayed radioactive material to determine the age of a rock
I'll get my friend the racccoon to date it for me using absolute dating
It seems to be an intrusion. That is when magma rises from the earths surface and melts through layers of rock
The law of superposition states that the oldes layer is on the bottom and the youngest layer is on the top
after he finds the age he can use the law of superposition to find the age of the surrounding rocks
Now with this rock and some index fossils, we can relatively date this cave
after thoroughly examining the rock, i can safely determine that the rock is 6,943 years old
I should make a graph of its radioactive decay.
Then I can add more information to my model of the geological time scale. From the creation of the earth to today
Now i'll go back to studying my fossils, rock samples, and ice core samples.
the rock cycle is pretty rad. there are three main types of rocks. Igneous sedimentary and metamorphic. weathering and erosion make a rock into sediment which will turn into sedimentary over time with pressure from new sediment
When rocks melt they form magma. Then, when the magma cools it turn into igneous rock
When a rock is put under intense heat and pressue, it forms a metamorphic rock.
I'm no dinosaur, but i sure know a lot about fossils
Fossils are the remains or traces of ancient life found in sedimentary rock. The fossil record, however, is the history of all life on Earth.
Some fossils can be tracks, bones, amber, and imprints of things like leaves.
Some processes of fossilization are molding, mineralization, or impressions.
Things are more likely to fossilize if they're buried quickly, so they aren't eroded or eaten by scavengers.