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.
The one closest to the surface because rock layers are laid down one on top of another.
On the top
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.
1. If a set of rock layers has been disturbed by movement of tectonic plates, the youngest layer may no longer be on top.
in the middle of the ocean ridge
The shale layer is the youngest in the series. In undisturbed rock layers, the Law of Superposition states that the youngest layer is on top and the oldest is at the bottom. So, in this case, the limestone would be the oldest layer, followed by sandstone, and then shale.
The youngest layer of sedimentary rock is typically found at the top of a sedimentary rock sequence, as it is the most recently deposited layer. This layer is usually exposed on the Earth's surface, such as in river valleys or coastal areas, where erosion may have removed older layers above it.
The fossils are typically found in the uppermost layer of rock, as sedimentary rock is formed from the accumulation of materials over time. Newer layers are deposited on top of older layers, meaning that the youngest fossils would be located in the most recent (top) strata. Therefore, the youngest fossils are in the layer that is highest in the sequence shown.
To determine the youngest rock layer in a geological figure, you typically look for the layer that is on top of all others, as sedimentary layers are deposited over time. In a diagram, the youngest layer is usually the one that has not been covered by any other layers. If there are any intrusions or faults, they can also indicate younger geological activity. Therefore, without the specific figure, the youngest layer is simply the one that appears at the top.
True. In an undisturbed sequence of sedimentary rocks, the bottom layer is the oldest and the top layer is the youngest due to the principle of superposition, which states that in any undisturbed sequence of rock layers, the youngest rocks are at the top and the oldest are at the bottom.
The relative age of the youngest rock layer is determined by the principle of superposition, which states that in an undisturbed sequence of sedimentary rocks, the layers at the bottom are older than those at the top. Therefore, the youngest rock layer is the one that is located on the surface or topmost layer of the formation. This layer has been deposited most recently compared to the layers beneath it.