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A discordant intrusion is known as a dyke. A larger intrusion may also be a pluton or batholith, which both also cut across rock strata. A sill is an intrusion which is concordant, and goes between the strata. This does not necessarily mean that it is horizontal.
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What are the relative ages of igneous intrusion and overlying sedimentary rock layers that dome upward?
The intrusion is younger than the overlying sedimentary rock.
If a dike is present within a rock outcrop what is its age relationship with the other rock layers?
Any igneous dike or intrusion is younger that the surrounding rock layers.
How does igneous intrusion end up as a hill?
Basically, igneous intrusion involves the solidifying of magma when it cools in the crust of the Earth. When magma rises through the crust, it intrudes into the existing sedimentary rock layers and forms a hill. The surounding rock may be more prone to erosion and wear away leaving the intrusion jutting above the (eroded) surroundings.
Sheets of igneous rock that are parallel to the layers they intrude?
A sheet of igneous rock that protrudes into the surrounding layers of rock is called a dike. Dikes are most often horizontal sheets that can form in many layers.
Is an intrusion younger than its surrouding rock layers?
An intrusion is younger than its surrounding rock layers. An intrusion needs another rock to cut through it, which is referred to as a cross-cutting relationship.
What is an igneous intrusion between two sedimentary rock layers?
A laccolith is an igneous formation between two sedimentary layers
What is the geologic term for a tabular body of igneous rock that is parallel to the surrounding rock layers?
It's called a concordant igneous intrusion, or a sill.
What is formed when magma that is squeezed into a generally vertical crack that cuts across layers and hardens?
That would be a type of igneous intrusion known as a dike.
What are the relative ages of igneous intrusion and overlying sedimentary rock layers that dome upward?
The intrusion is younger than the overlying sedimentary rock.
What kind of rock is an intrusion made of?
An intrusion is a mass of igneous rock that forms when melted rock moves into cracks in rock layers and then cools.
What is the age of an igneous intrusion in relation to the sedimentary rock layers it passes through?
It is younger than them.
What is the age of an intrusion of igneous rock in relation to the sedimentary rock layers through which it passed?
It is younger.
What is the The age of an intrusion of igneous rock in relation to the sedimentary rock layers through which it passes?
It is younger.
What forms when magma flows horizontally along rock layers?
A form of igneous intrusion known as a Sil.
Why portions of the sedimentary rock layers have the symbol for contact metamorphism?
the rock layers were eroded at the interface between the igneous intrusion and the sedimentary rocks.
If a dike is present within a rock outcrop what is its age relationship with the other rock layers?
Any igneous dike or intrusion is younger that the surrounding rock layers.
What is an intrusion in science terms?
Intrusive is a term that applies to igneous rocks that form from magma underground such as granite.
