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Neither, Igneous rock is either intrusive or extrusive. Thats what intrusive and extrusive is... A igneous rock.

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11y ago
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14y ago

Quartzite is not classified as intrusive or extrusive. It is a non-foliated metamorphic rock with a protolith of sandstone.

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15y ago

Scoria is an extrusive igneous rock with a vesicular texture.

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10y ago

No. Intrusive and extrusive are temrs applied to igneous rocks. Schist is metamorphic.

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13y ago

Shale is made of volcanic ash and clay minerals, and other minerals. Shale is a sedimentary rock, that turns into slate. Shale is a extrusive rock.

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10y ago

No. Extrusive and intrusive are terms that apply to igneous rocks. Shale is a sedimentary rock.

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13y ago

Neither. Intrusive and extrusive rocks are both types of igneous rocks. Schist and gneiss are metamorphic rocks.

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11y ago

Neither. Gneiss is a metamorphic rock, whereas "intrusive" and "extrusive" are sub-categories of igneous rocks.

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Phu Nguyen

Lvl 2
4y ago

The Scoria Rock is an Extrusive and plus a Igneous Rock.

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12y ago

intrusive

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Q: Is schist an intrusive or extrusive rock?
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What makes gabbro a rock and not a mineral?

Gabbro is usually made up of minerals such as pyroxene, plagioclase, amphibole and olivine which makes it an intrusive igneous rock.


What kind of rock is found in stone mountain?

In northern Georgia, you will find the southern terminus of the Appalachian Mountains, arguably the oldest mountain range on earth. The mountains date from the Permian time period of earth's history, around 300 million years ago. These mountains are igneous (volcanic) in origin, but in the huge amount of time since then, are also metamorphic. In southern Georgia, since rivers and streams drain the area, the rocks are largely sedimentary, composed of igneous and metamorphic rocks from the north laid down in riverbeds and deltas.


What is intrussive?

Common misspelling for the word intrusive which means unwanted disruption by someone or something. People phonetically here two â??sâ?? when saying intrusive.


Can fossils be found in all types of rocks?

Often, but not always! The definition of a fossil is a whole, part or impression of an organism from a past geologic age, embedded in natural materials, such as rock, sediment, resin, petrified bones, or wood.


What do intrusions and extrusions do?

Extrusive rocks are... extruded... onto the surface as the lava that we all think of. It cools fairly quickly, into rocks with fairly small crystals (might need a magnifying lens to see them). The exact chemistry of the parent magma will determine the type of rock. Oceanic volcanoes are generally basaltic (mafic or ultramafic), continental are generally granitic (felsic or intermediate). They're put down in "relatively thin" layers. Intrusive rocks cool for thousands of years beneath the surface in huge plutons or batholyths. This allows them to grow very large crystals (easily seen by the unaided eye). These intrusive rocks are almost always granitic-type rock.