layers in the earth's crust that have been dug up. like paleontologists can not receive valid information if they found a dig that had already been dug up
the way geologist know that rock layers are undisturbed is the rock layers are folded
the principal of sedimentarianism
no because that's why I asked u
When a rock is disturbed, it usually contains one of the following abnormalities:SlantingBendingFoldingCrackingMetamorphismor Nonconformities.If a rock layer contains none of these, then geologists classify it as undisturbed.
principle of superposition
the way geologist know that rock layers are undisturbed is the rock layers are folded
The rock layers will be easily visible.
The undisturbed rock layers are horizontal and in order of age from youngest nearest the surface to oldest at the bottom of the rock unit.
The answer is: Relative dating
the principal of sedimentarianism
When a rock is disturbed, it usually contains one of the following abnormalities:SlantingBendingFoldingCrackingMetamorphismor Nonconformities.If a rock layer contains none of these, then geologists classify it as undisturbed.
no because that's why I asked u
When a rock is disturbed, it usually contains one of the following abnormalities:SlantingBendingFoldingCrackingMetamorphismor Nonconformities.If a rock layer contains none of these, then geologists classify it as undisturbed.
principle of superposition
The principle of superposition states that in an undisturbed sequence of rock layers, the youngest will be at the top, the oldest at the bottom.
It is called Superposition.
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.