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When a layer or several layers of rock are missing from a rock layer is a what?
Wiki User
∙ 8y ago
disconformities
angular unconformities
nonconformities
Wiki User
∙ 8y ago
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Is it true that sometimes layers of rock are overturned so much that the youngest rock layer may appear on the bottom?
yes
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".
How do we know if rock layers are undisturbed?
The rock layers will be easily visible.
What kind of rock is made up of layers?
Sedimentary Rock is made up of layers of different rocks.
How can ingneous rock disturb sedimentary rock layers?
Molten Rock from with in earth can force its way up through the layers above it cooling and forming igneous rock.
When a layer or several layers of rock are missing from a rock layer sequence this is called a what?
It is called an uncomformity.
When a layer or several layers are missing from a rock-layer what is this called?
Unconformity= break in sedimentary rock record
Why is it necessary to observe the rock layers of several different localities?
Due to missing layers in the rock strata caused by erosion.
What are missing rock layers known as?
Unconformities. =)
What is rock layers?
rock layering is where you have one layer of old rock them a newer layer then an other newer layer.
Is the top layer of rock the youngest layer?
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.
What layer is the layer of rock between the earths crust and core?
There are several layers between the outer core and the crust mainly combined into one and called the Mantle.
What is are missing gaps in rock layers called?
They are called uncomformities.
What is the difference between a rock layer and a rock column?
A rock column is made of many rock layers.
What is the best indication of a relative age of a rock layer?
The position of the layer compared to other layers.
Which rock has several layers?
Sedimentary
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.
