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What processes might put younger rock beneath older rock?
The process of "overthrusting" occurs when tectonic forces push one rock layer on top of another, causing younger rock to be placed beneath older rock. This can lead to a reverse order of rock layers in a geologic formation. Another process, called "faulting," involves the movement of rock layers along a fault plane, which can result in the displacement of younger rocks below older rocks.
What is it called when a top of the rock is younger than the bottom layer?
It is called "overturned stratigraphy" or "inverted stratigraphy." This occurs when the rocks have been folded or overturned due to tectonic forces, resulting in the older layers appearing on top and the younger layers underneath.
Are the layers of rock above and below the coal older or younger?
Every layer of rock, as one moves up from the core, is younger than the one below it. This means that the layers of rock above and below the coal are different ages, with the one above younger and the one below older.
When the surface of new rock layers meet a much older rock beneath them what is it called?
When the surface of new rock layers meet a much older rock beneath them, it is called an unconformity. This represents a gap in the geologic record due to erosion or non-deposition between the older and younger rocks.
Would you expect to find fossils of an organism that lived relatively recently in old layers of rock or in younger layers?
Fossils of an organism that lived relatively recently would be expected to be found in younger layers of rock, as they would not have had sufficient time to become buried and fossilized in older layers. Fossils of older organisms tend to be found in deeper, older layers of rock.
How the law of superposition helps scientist determine relative age?
Younger layers are deposited on top of older layers, whether the layer is sedimentary or volcanic. Occasionally faults may result in overthrusts, where a series of older layers may be pushed over the top of younger layers. But this is rare. In general, the older layers will be the lower layers.
Is the fault older or younger than the layers?
older because it is at the bottom and the ones on top are younger than the bottoms
What processes might put younger rock beneath older rock?
The process of "overthrusting" occurs when tectonic forces push one rock layer on top of another, causing younger rock to be placed beneath older rock. This can lead to a reverse order of rock layers in a geologic formation. Another process, called "faulting," involves the movement of rock layers along a fault plane, which can result in the displacement of younger rocks below older rocks.
What are older rocks that lie under younger rocks called?
You may be referring to an "outlier" which is an area of older rocks surrounded by younger ones due to faulting and erosion removing layers of younger rocks and forcing older ones up into them. You may also potentially be referring to a xenolith. This is a fragment of older material that has not melted that is trapped within lava or other younger igneous material.
What is it called when a top of the rock is younger than the bottom layer?
It is called "overturned stratigraphy" or "inverted stratigraphy." This occurs when the rocks have been folded or overturned due to tectonic forces, resulting in the older layers appearing on top and the younger layers underneath.
Are the layers of rock above and below the coal older or younger?
Every layer of rock, as one moves up from the core, is younger than the one below it. This means that the layers of rock above and below the coal are different ages, with the one above younger and the one below older.
What does the law of superpositioning state?
Principle stating that older rock layers are beneath younger rock layers.
When the surface of new rock layers meet a much older rock beneath them what is it called?
When the surface of new rock layers meet a much older rock beneath them, it is called an unconformity. This represents a gap in the geologic record due to erosion or non-deposition between the older and younger rocks.
Is a layer younger or older than the layers it cuts through?
A fault is necessarily younger than faults it cuts through; it could not have happened if the layers were not there first.
Which scientific principle states that younger rock layers are generally deposited on top of older rock layers and why?
Superposition
Would you expect to find fossils of an organism that lived relatively recently in old layers of rock or in younger layers?
Fossils of an organism that lived relatively recently would be expected to be found in younger layers of rock, as they would not have had sufficient time to become buried and fossilized in older layers. Fossils of older organisms tend to be found in deeper, older layers of rock.
What is the method of determining whether a fossil is older or younger than other fossils found in the many layers of sedimentary rock is called what?
relative dating
