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That is known as an "intrusion". The magma (lava) is forced under pressure into cracks and fissures within the older rock. There are some good examples of this type of formation in Yellowstone caldera.
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Molten rock under ground?
Magma or lava. Classified as mafic or felsic, depending on it's minerology.
What is the only kind of rock that can form directly from magma?
By definition. A sedimentary rock is formed from sediments, chemical, organic, or clastic. A metamorphic rock has undergone a change in mineral alignment or mineral composition due to heat and/or pressure. An igneous rock forms from solidification of magma via cooling.
Which igneous rock forms when basaltic magma hardens?
Intrusive rock
What does magma with high silica content form?
When it cools and crystallizes into rock, the rock will be described as felsic igneous rock. Examples of felsic igneous rocks are granite, rhyolite, and pumice.
What is Earth mostly made out of?
Rock and magma
Which type of intrusive feature forms when when magma is injected into fractures cutting across rock layers?
sill
Which type of intrusive feature when magma is injected into fractures cutting across preexisting rock layers?
sill
Magma injected into older rock?
Any molten rock that has not reached the surface is called magma. It is made when two tectonic plates collide and one edge of a plate is forced underneath the other, and pushed closer to the center of the earth where it heats up, and melts down.
Which type of intrusive feature forms when magma is injected into fractures cutting across preexisting rock layers?
sill
What is a sheet like body that cuts across rock layers and is produced when magma is injected into a fraction is called?
A dike I got it right on a test
Are sills tabular discordant bodies that are produced when magma is injected into fractures?
No, they are a tabular igneous body that was intruded parallel to the layering of preexisting rock.
Is magma a weathered rock?
No. Magma is molten rock underground.
What kind of rock forms from magma?
igneous rock
How is magma and igneous rocks related?
Magma is molten rock, and igneous rock is cooled magma.
Hot melted rock inside the earth is called?
The molten rock inside the Earth is called magma. When magma reaches the surface, it is called lava.
How does magma create rock?
Magma is molten rock. It becomes rock by cooling and hardening.
Which type of rock forms from magma?
magma is a mixture of several different types of rock.
