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Gray slate is an example of a metamorphic rock, not an igneous rock, so the terms intrusive and extrusive do not apply to it in the same way. Slate forms from the metamorphism of shale under heat and pressure, causing the original sedimentary layers to recrystallize and align. Intrusive rocks crystallize slowly beneath the Earth's surface, while extrusive rocks form from lava that cools quickly on the surface. Therefore, gray slate is neither intrusive nor extrusive.
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Is dacite intrusive or extrusive?
Dacite can be both intrusive and extrusive. Intrusive dacite forms when magma solidifies beneath the Earth's surface, while extrusive dacite forms when lava erupts on the Earth's surface and cools quickly.
Is magma extrusive or intrusive?
Magma can be either extrusive or intrusive. Extrusive magma forms on the Earth's surface during volcanic eruptions, while intrusive magma forms below the surface and cools slowly to create intrusive igneous rocks.
Is marble an extrusive or an intrusive rock?
Neither. The terms intrusive and extrusive apply to igneous rocks; marble is metamorphic.
Is Obsidian an extrusive rock or intrusive rock?
Yes it is extrusive love yall
Igneous rocks are described as intrusive or extrusive based on?
Igneous rocks are described as intrusive or extrusive based on formation. Intrusive rocks forms underneath the earth surface, while extrusive rocks forms on the surface of earth.
Is Slate extrusive or intrusive?
Slate is a metamorphic rock that is formed from the low-grade metamorphism of shale or mudstone. It is primarily formed from the compaction and recrystallization of clay and mud. Slate is typically formed deep within the Earth's crust, making it an intrusive rock.
Is schist an intrusive or extrusive rock?
Neither, Igneous rock is either intrusive or extrusive. Thats what intrusive and extrusive is... A igneous rock.
Are crystals intrusive or extrusive?
extrusive
Is Plutonic intrusive or extrusive?
Intrusive
Is plutonic intrusive extrusive?
Intrusive
Is dacite intrusive or extrusive?
Dacite can be both intrusive and extrusive. Intrusive dacite forms when magma solidifies beneath the Earth's surface, while extrusive dacite forms when lava erupts on the Earth's surface and cools quickly.
Are fine crystals intrusive or extrusive?
extrusive
Is basalt an intrusive rock or extrusive rock?
Extrusive. Solidifies above ground level.
What are the main two types of igneous rocks?
Igneous rocks are classified as either extrusive or intrusive. Extrusive rocks form from lava at or above the ground, and intrusive rocks form from magma below the ground. Granite is intrusive, pumice is extrusive.
Is magma extrusive or intrusive?
Magma can be either extrusive or intrusive. Extrusive magma forms on the Earth's surface during volcanic eruptions, while intrusive magma forms below the surface and cools slowly to create intrusive igneous rocks.
Does lava produce Extrusive or Intrusive rocks?
extrusive
Is a metamorphic rock intrusive or extrusive?
It is neither. Intrusive and extrusive are terms used to describe igneous rock.
