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The basement is a term sometimes used, and Cratonis another used in a continental context.
The Principle of Superposition has it that in a given formation, the top layers are the youngest, and the deeper layers the oldest.
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∙ 13y ago
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∙ 15y agoThe Law of Superposition states that in undisturbed strata of sedimentary rock, the oldest rock layer is at the bottom, the youngest at the top.
The oldest layer of rock is typically found at the bottom, known as the basement rock. This rock layer is usually the original formation upon which younger layers were deposited over time.
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∙ 12y agoRocks that are further down in the crust are the oldest.
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∙ 10y agorockss is the softtest when it is deep underground
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∙ 12y agoits the centre of the earth
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∙ 11y agoIgneous rock.
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∙ 13y agoAnonymous
sedimentaryb rock
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cuar
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How can you tell what layer of rock is oldest or youngest?
In undisturbed rock layers, the principle of superposition states that the youngest rock layers are on top and the oldest are at the bottom. This means that the rock layer closest to the surface is the youngest, while the layer at the bottom is the oldest. Additionally, the principle of cross-cutting relationships helps determine relative ages by looking at how faults and intrusions cut across rock layers.
According to the law of superposition the lowest layer in a cross section of rock is what?
According to the law of superposition, the lowest layer in a cross section of rock is the oldest, as sedimentary rocks are typically laid down in sequence with the oldest rocks at the bottom and the youngest at the top.
Is The top layer of sedimentary rock is the oldest true or fasle?
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.
Which rock layer was deposited last?
The topmost rock layer is the one that was deposited last, as rock layers are typically deposited in a vertical sequence with the oldest layers at the bottom and the youngest layers at the top.
Which is the youngest in a sereis of undisturbed rock layers where shale lies between sandstone below and limestone above?
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.
Which rock layer is the oldest and why?
the bottom one
What layer of a rock in a mountain is the oldest?
The layer at the bottom of the mountain is typically the oldest, as rocks are usually deposited in chronological order with the oldest rocks at the bottom and the youngest at the top. This principle is known as the law of superposition.
How would you know which is the oldest layer in a rock?
You would know because the youngest rock layer is always on the top, and the oldest is always at the bottom of the canyon.
What is the name for the bottom oldest layer of rock?
The bottom oldest layer of rock is called the "bedrock." It is the solid rock layer beneath soil, sediment, and other loose material.
How would you know which rock layer in a canyon is the oldest?
The oldest rock layer in a canyon is typically the layer found at the bottom. This is because new layers of rock are deposited on top of older layers over time, resulting in a sequence with the oldest rocks located at the base of the canyon. Geologists use principles of stratigraphy, such as the Law of Superposition, to determine the relative ages of rock layers in a canyon.
Superposition can best be explained new layer on old layer?
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.
Is the layer of rock near the surface the oldest?
false
When looking at layers of rock which layer is oldest?
In a normal sequence (ie one that has not been tectonically deformed) the oldest layer is the lowest layer - so the one at the base of the sequence is the oldest. This is called the "law of superposition".
According to the law of superposition the lowest layer in a cross section of rock is what?
According to the law of superposition, the lowest layer in a cross section of rock is the oldest, as sedimentary rocks are typically laid down in sequence with the oldest rocks at the bottom and the youngest at the top.
What is the definition for principal of superposition?
states that the lowest rock in layers is the oldest and the highest is the youngest rock layer
What is the methods that tells you which layer of rock is oldest but does not tell you exactly how old?
Relative dating
Is the oldest layer of rock on bottom?
Yes, typically the oldest layer of rock is found at the bottom due to the principle of superposition, which states that in any undisturbed sequence of rock layers, the oldest layer will be at the bottom and the youngest layer at the top. This helps geologists understand the relative ages of rocks and the order in which they were deposited.
