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An unconformity. There are three main types: angular unconformity, disconformity, and nonconformity.
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A common cause of gap in rock layers is what?
A gap in sedimentary layers is known as an unconformity, and occurs as a result of either erosion or a period of non-deposition.
What is a gap in the rock record caused by erosion?
Any gap in age of rock between rock layers is called an uncomformity. An unconformity is the contact between two layers representing a gap in the geologic record, usually from the erosion of the layers which would normally be expected to appear.
What is a geologic column?
An ideal sequence of rock layers that contains all the known fossils and 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.
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.
A common cause of gap in rock layers is what?
A gap in sedimentary layers is known as an unconformity, and occurs as a result of either erosion or a period of non-deposition.
What is a gap in the rock record caused by erosion?
Any gap in age of rock between rock layers is called an uncomformity. An unconformity is the contact between two layers representing a gap in the geologic record, usually from the erosion of the layers which would normally be expected to appear.
What is a geologic column?
An ideal sequence of rock layers that contains all the known fossils and 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.
What is a geological column?
An ideal sequence of rock layers that contains all the known fossils and rock.
Where in the sequence of events is the formation of an uncomformity?
An unconformity is a gap in the sedimentary rock record. This animation shows the formation of an angular unconformity-one where the layers above and below the unconformity are not parallel to each other, but form an angle.
What is an unconfomity?
a gap in the geologic record that shows where rock layers have been lost do to erosion
What is geological column used for?
the geologic column is used for identifying the layers in a rock sequence.
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.
What is the geologic columnused in relative dating?
1.Geologists use the geologic column to help them interperet rocks sequences. 2.they use to help them identify rock layers in complicated rock sequence.
What process involves the comparison of rock layers with others in a sequence to determine its age?
relative dating
If the same sequence of rock layers is observed over a large area?
A large deposit of rock formed over a arge area
