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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".
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∙ 10y ago
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When a layer or several layers of rock are missing from a rock layer is a what?
disconformitiesangular unconformitiesnonconformities
Which rock layer is the oldest and why?
the bottom one
Is it true that sometimes layers of rock are overturned so much that the youngest rock layer may appear on the bottom?
yes
What are wavy layers in rock deposits called?
Wavy layers in rock deposits form due to folding, which occurs under high pressure and high temperatures. The rock layers bend and create the wavy appearance. Not sure if that is what you're looking for Wavy layers can also simply be a bedform within sedimentary rocks - these are called wavy bedding or wavy lamination.
How do we know if rock layers are undisturbed?
The rock layers will be easily visible.
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 rock layer is the youngest?
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.
When principle states that the oldest rock layer is found at the bottom in an undisturbed stack of rock layers?
It is called Superposition.
Where are the oldest organisms located in the rock layer?
In the geological column , scientists have learned that rocks are stacked in layers. The oldest fossils are located in the deepest layers, a vertical timeline.
Which layer of rock is the oldest?
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.
Explain that folding faulting and uplifting can rearrange the rock layers so the youngest is not always found on top?
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.
Where can you find the oldest fossils in sedimentary rock layers?
It would be found in the lower layers, rather that younger fossils which are found in the upper layers. ♥
What can you tell from undisturbed rock layers?
You can tell the age of the layers. The bottom layer is the oldest and the top is the youngest. When the layers are disturbed they tend to get bent and messed up and you cannot tell the age
How are fossils related to science?
because it has to do with layers of sedimentary rock; piles of rock get stacked upon fossils which means the bottom layer with the fossils is oldest since it was there 1st
When a layer or several layers of rock are missing from a rock layer is a what?
disconformitiesangular unconformitiesnonconformities
What does the principle of superposition state?
Layers at the bottom are the oldest.
Would the oldest sedimentary rocks be at the top or the bottom of the cliff?
bottom
