that's easy, dirt is on the ground and over the yyears more dirt and rock cover it, subsequently every new layer of ground goes on top of the last one making the most current one the one top with other layers increasing in age as you go further down.
According to the Law of Superposition, in a depositional sequence of undisturbed rock layers, the top layer of rock is the most recent to form from the processes of lithification or eruption of lava onto the surface, and are therefore the youngest rock layers.
folding
sedimentation
erosion
or faulting
choose one
Strata maybe...
1. If a set of rock layers has been disturbed by movement of tectonic plates, the youngest layer may no longer be on top.
The one closest to the surface because rock layers are laid down one on top of another.
Whenfolding, faulting, and uplifting occurs, the youngest rock layer can not always be on top. With folding the oldest rock layer could get folded over on top of a younger layer. When faulting occurs a younger rock layer can become "lower" or pushed more down in the rock layers that was originally shown. When these things happen, then rock layers can become out of order and the youngest layer is not always on the top of the layer.
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.
As a rule, the oldest rocks of layered rock strata are always at the bottom, the youngest at the top. The rock at the bottom was the first to form. Layers of weathered and eroded particles (sediments) or igneous material in the form of lava, add additional weight over time, which causes the mass to sink and compress, forming new rock layers. When running water erodes a canyon, the geologic history of the land is revealed in the rock layers.
On the top
1. If a set of rock layers has been disturbed by movement of tectonic plates, the youngest layer may no longer be on top.
The one closest to the surface because rock layers are laid down one on top of another.
On the top
because sedimentary rocks are on the top layer, while igneous rocks are were the magma is
According to the Law of Superposition, in a depositional sequence of undisturbed rock layers, the top layer of rock is the most recent to form from the processes of lithification or eruption of lava onto the surface, and are therefore the youngest rock layers.
Whenfolding, faulting, and uplifting occurs, the youngest rock layer can not always be on top. With folding the oldest rock layer could get folded over on top of a younger layer. When faulting occurs a younger rock layer can become "lower" or pushed more down in the rock layers that was originally shown. When these things happen, then rock layers can become out of order and the youngest layer is not always on the top of the layer.
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.
Superposition is the theory that the rock layer that is on top is the youngest and the layer of rock on the bottom is the oldest.
The very top layer of crust.
in the middle of the ocean ridge
The top layer. The top layer of any sedimentary rock is most likely the newest in geologic time.