Old rocks! New or young rocks are at the top!
in rock layers what is found at the bottom
Normally, the oldest rocks are found at the bottom of the layers, being the first of the sediments that were deposited.
The chronological order of rock layers is usually determined by their order in an undisturbed sequence of strata. According to the principle of superposition, the oldest layers would be found at the bottom and the youngest layers at the top. In disturbed rock layers (those that have been folded, uplifted, or generally disrupted by tectonic forces), the determination must be made based on the presence of index fossils, comparison to undisturbed strata or radiometric dating.
Sedimentary
I think it is because animals died then mud piled on top the another layer of animals and so on.
in rock layers what is found at the bottom
Old rocks! New or young rocks are at the top!
Normally, the oldest rocks are found at the bottom of the layers, being the first of the sediments that were deposited.
Sedimentary rock. It forms when layers of sediment pile up.
because they are sedimentary rock
Fossils of armored fish, corals, shellfish, and snails have been found in the Grand Canyon.
Diamond ore is only found on the bottom 16 layers of the map
The chronological order of rock layers is usually determined by their order in an undisturbed sequence of strata. According to the principle of superposition, the oldest layers would be found at the bottom and the youngest layers at the top. In disturbed rock layers (those that have been folded, uplifted, or generally disrupted by tectonic forces), the determination must be made based on the presence of index fossils, comparison to undisturbed strata or radiometric dating.
It is called Superposition.
Sedimentary
observing what the speakers do with it
I think it is because animals died then mud piled on top the another layer of animals and so on.