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When there is an igneous intrusion and a fault line which one is younger?
That depends! If the fault line cross cuts the igneous intrusion causing the intrusion to be displaced on either side of the fault and forming a broken mass of rock within the intrusion known as a fault breccia then the fault is younger than the intrusions, as the intrusion must have already existed for the fault to cause it's displacement. If on the other hand the igneous intrusion cross cuts the fault and is un-deformed then it is probable that it is younger than the fault.
What statement best describes an igneous intrusion?
An igneous intrusion is formed when molten rock (magma) is forced into preexisting rock and solidifies underground. Over time, the surrounding rock erodes away, exposing the igneous intrusion at the Earth's surface. Intrusions can take various shapes and sizes, such as dikes, sills, and laccoliths.
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.
Metamorphic rock is found next to an igneous intrusion what causes that?
The heat from the intrusion has baked the host rock, altering its physical characteristics. Fluids heated by the intrusion can also alter the chemistry of the host rock by adding ions present in the heated fluids.
Sometimes metamorphic rock is found adjacent to an igneous intrusion as shown in the drawing According to geologists what causes this phenomenon?
Metamorphic rocks found adjacent to an igneous intrusion occur due to the heat and pressure generated by the intrusion. The high temperatures from the magma cause the original rock to metamorphose, resulting in the formation of metamorphic rocks near the boundary of the intrusion.
When there is an igneous intrusion and a fault line which one is younger?
That depends! If the fault line cross cuts the igneous intrusion causing the intrusion to be displaced on either side of the fault and forming a broken mass of rock within the intrusion known as a fault breccia then the fault is younger than the intrusions, as the intrusion must have already existed for the fault to cause it's displacement. If on the other hand the igneous intrusion cross cuts the fault and is un-deformed then it is probable that it is younger than the fault.
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.
Why do igneous rock that solidify underground cools so slowly?
They are insulated by the surrounding rock and are in close proximity or part of a hot, molten, or partially molten igneous intrusion.
What statement best describes an igneous intrusion?
An igneous intrusion is formed when molten rock (magma) is forced into preexisting rock and solidifies underground. Over time, the surrounding rock erodes away, exposing the igneous intrusion at the Earth's surface. Intrusions can take various shapes and sizes, such as dikes, sills, and laccoliths.
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.
What do you call the layering in igneous rocks?
"layering" As in "layered" igneous intrusion.
Metamorphic rock is found next to an igneous intrusion what causes that?
The heat from the intrusion has baked the host rock, altering its physical characteristics. Fluids heated by the intrusion can also alter the chemistry of the host rock by adding ions present in the heated fluids.
Sometimes metamorphic rock is found adjacent to an igneous intrusion as shown in the drawing According to geologists what causes this phenomenon?
Metamorphic rocks found adjacent to an igneous intrusion occur due to the heat and pressure generated by the intrusion. The high temperatures from the magma cause the original rock to metamorphose, resulting in the formation of metamorphic rocks near the boundary of the intrusion.
What is a large igneous intrusion called?
A large igneous intrusion is called a pluton. Plutons are formed when molten rock (magma) solidifies beneath the Earth's surface, resulting in large bodies of igneous rock. Examples of plutons include batholiths, stocks, and laccoliths.
How does the age of a rock layer compare with an igneous intrusion that is through it or an igneous rock extrusion above it?
If it is above it, the rock layer came after the intrusion. if the intrusion went through the rock layer is older because they layer had to be there in order for the intrusion to go through.
Which numbered rock layers are younger than the ignewous intrusion layer?
To determine which numbered rock layers are younger than the igneous intrusion layer, you would need to refer to a specific geological cross-section or diagram. Generally, in geology, igneous intrusions are younger than the surrounding sedimentary layers because they form after the existing layers have been deposited. Therefore, any rock layers that are located above the igneous intrusion in the stratigraphic sequence would be considered younger.
What kind of a rock is an intrusion made of?
igneous rock
