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Via magma
- Most intrusions into country rock are via magma. Usually, country rock is intruded by an igneous body of rock which formed when magma forced upward through fractures, or melted through overlying rock. Magma then cooled into solid rock, different from the surrounding country rock.
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Most intrusions into country rock are via magma. Usually, country rock is intruded by an igneous body of rock which formed when magma forced upward through fractures, or melted through overlying rock. Magma then cooled into solid rock, different from the surrounding country rock.
May 29, 2018 · In most cases, country rock is intruded by an igneous body of rock that formed when magma was forced upward through fractures or melted its way up through the overlying rock. The magma then cooled into solid rock forming a mass distinct from the enveloping country rock.
Apr 24, 2024 · As discussed already, plutons can interact with the rocks into which they are intruded, sometimes leading to partial melting of the country rock or to stoping and formation of xenoliths. And, as we’ll see in Chapter 7, the heat of a body of magma can lead to metamorphism of the country rock.
As discussed already, plutons can interact with the rocks into which they are intruded, sometimes leading to partial melting of the country rock or to stoping and formation of xenoliths. And, as we’ll see in Chapter 7, the heat of a body of magma can lead to metamorphism of the country rock.
- Steven Earle
- 2015
Epizonal intrusions are discordant with country rock and have sharp contacts with chilled margins, with only limited metamorphism in a contact aureole, and often contain xenolithic fragments of country rock suggesting brittle fracturing. Such intrusions are interpreted as occurring at shallow depth, and are commonly associated with volcanic ...
It does so in a few different ways: Filling and widening existing cracks. Melting the surrounding rock. Pushing the rock aside (where the rock is hot enough and under enough pressure to deform without breaking) Breaking the rock. When magma forces itself into cracks, breaks off pieces of rock, and then envelops them, this is called stoping .
It does so in a few different ways: Filling and widening existing cracks. Melting the surrounding rock. Pushing the rock aside (where the rock is hot enough and under enough pressure to deform without breaking) Breaking the rock. When magma forces itself into cracks, breaks off pieces of rock, and then envelops them, this is called stoping .
