On the top
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.
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 youngest fossils are typically found in recent sedimentary rock formations or on the surface of the Earth. These fossils are often from organisms that lived within the past few thousand years, such as the bones of mammoths or ancient human remains.
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.
The layer of sedimentary rock that was deposited first is typically the lowest layer in a sedimentary sequence, known as the "oldest" layer. According to the principle of superposition, in undisturbed sedimentary rock formations, the layers are arranged with the oldest at the bottom and the youngest at the top. This means that the first layer deposited is usually the one furthest down in the sequence. However, geological events like folding or faulting can complicate this arrangement.
The one closest to the surface because rock layers are laid down one on top of another.
Clay
On the top
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.
1. If a set of rock layers has been disturbed by movement of tectonic plates, the youngest layer may no longer be on top.
Scientists can use sedimentary rock to determine a fossil's relative age by examining the layers in which the fossil is found. The principle of superposition states that in an undisturbed sequence of sedimentary rock layers, the oldest layer is at the bottom and the youngest layer is at the top. By identifying the layer in which the fossil is located, scientists can approximate its relative age compared to other fossils and rock layers.
The "youngest" (newest) sedimentary rocks are a few million years old, those that underwent rapid compaction in the shortest lithification process.
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 youngest fossils are typically found in recent sedimentary rock formations or on the surface of the Earth. These fossils are often from organisms that lived within the past few thousand years, such as the bones of mammoths or ancient human remains.
sedimentary layer ㅡㅡ
a layer of rock
The oldest rock layer is typically found at the bottom of a sequence of sedimentary layers, following the principle of superposition in geology. This principle states that in an undisturbed sequence of rock layers, the oldest layer will be at the bottom and the youngest at the top. Therefore, the rock layer closest to the Earth's surface is usually the youngest, while the rock layer at the bottom is the oldest.