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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.
The age of igneous intrusion is 50 million years what is the most probable age of the rock immediately surrounding the intrusion?
The most probable age of the rock immediately surrounding the igneous intrusion would likely be close to 50 million years as well. This is because the heat from the intrusion would have altered the surrounding rocks, making them younger than the original rock but still relatively close in age.
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.
What type of rocks is graphite found in?
Graphite can be found in all types of rock (igneous, metamorphic, and sedimentary). Although, it originates from igneous rocks, and is generally most economic in metamorphic rocks.
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 do you call the layering in igneous rocks?
"layering" As in "layered" igneous intrusion.
What is the relative age of fault or igneous intrusion that cuts through an unconformity?
If a fault or intrusion cuts through an unconformity, the fault or intrusion is younger than all the rocks it cuts through above and below the unconformity.
What granite intrusion crosses a thick sandstone bed which is older and what law is it?
The granite intrusion that crosses a thick sandstone bed is an example of an igneous intrusion that is younger than the sandstone. This relationship is explained by the Law of Cross-Cutting Relationships, which states that geological features that cut through other rocks must be younger than the rocks they cut through. Thus, the granite intrusion is considered younger than the sandstone bed it intersects.
Why are the rocks in a large igneous intrusion coaser grained than the rocks in a small igneous intrusion at the same depth?
The minerals had longer to form from the hot magma than did the minerals in the small intrusion, which would have cooled much faster.
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 rocks are formed from the heat of a magma chamber?
Intrusive Igneous rocks
Why are there no fossils in a intrusion?
If you mean an intrusion via magma/lava, then fossils would not exist due to the fact that most fossils are found in SEDIMENTARY rock, not IGNEOUS (magma/lava rocks).
What type of area granite and basalt rocks found in?
Principally and respectively they are the main continental and oceanic crust rocks of the Earth. They will also appear on the surface as igneous rocks by intrusion or extrusion (volcanism).
What is the relative age of a fault or igneous intrusion that cuts through an unconformity?
The relative age of a fault or igneous intrusion that cuts through an unconformity is younger than the unconformity but older than the rock it cuts through. This is because the fault or intrusion must have formed after the deposition of the rock layers below the unconformity but before the deposition of the rock layers above the unconformity.
Fossils found in younger rocks?
The youngest rocks would be igneous, those created by cooling magma. Impossible to find a fossil there.
What a cross cutting relationship?
Cross cutting relationships define rock formations in geology. When magma enters cracks and crevices in existing rocks and cools it forms what is called an igneous intrusion. The principal of cross cutting relationships means that the igneous intrusion is always younger than the rock it cuts across.
The age of igneous intrusion is 50 million years what is the most probable age of the rock immediately surrounding the intrusion?
The most probable age of the rock immediately surrounding the igneous intrusion would likely be close to 50 million years as well. This is because the heat from the intrusion would have altered the surrounding rocks, making them younger than the original rock but still relatively close in age.
