Often asked: What Does Extrusive Mean In Science?

What does extrusive mean?

Definitions of extrusive. adjective. of rock material; forced out while molten through cracks in the earth’s surface. Synonyms: volcanic. igneous rock produced by eruption and solidified on or near the earth’s surface; rhyolite or andesite or basalt.

What is the meaning of extrusive rock?

Extrusive, or volcanic, igneous rock is produced when magma exits and cools above (or very near) the Earth’s surface. These are the rocks that form at erupting volcanoes and oozing fissures.

What does intrusive mean in science?

intruding; thrusting in. Geology. (of a rock) having been forced between preexisting rocks or rock layers while in a molten or plastic condition. noting or pertaining to plutonic rocks.

What is another word for extrusive?

What is another word for extrusive?

projecting bulging
protrudent protrusive
sticking out beetling
conspicuous extruding
gibbous jutting out

What is an example of extrusive?

If the magma contains abundant volatile components which are released as free gas, then it may cool with large or small vesicles (bubble-shaped cavities) such as in pumice, scoria, or vesicular basalt. Other examples of extrusive rocks are rhyolite and andesite.

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What does vesicular mean?

1: containing, composed of, or characterized by vesicles vesicular lava. 2: having the form or structure of a vesicle. 3: of or relating to vesicles.

What is the most common type of intrusive rock?

Granite is the most common intrusive rock on the continents; gabbro is the most common intrusive rock in oceanic crust.

What is a type of intrusive rock?

Intrusive igneous rocks crystallize below Earth’s surface, and the slow cooling that occurs there allows large crystals to form. Examples of intrusive igneous rocks are: diabase, diorite, gabbro, granite, pegmatite, and peridotite. Dacite is a fine-grained, extrusive igneous rock that is usually light in color.

What is the difference between intrusive and extrusive igneous rocks?

Extrusive rocks are formed on the surface of the Earth from lava, which is magma that has emerged from underground. Intrusive rocks are formed from magma that cools and solidifies within the crust of the planet. If lava cools almost instantly, the rocks that form are glassy with no individual crystals, like obsidian.

What is an intrusive person?

The definition of intrusive is someone or something that invades personal space, that becomes too involved or that comes too close without being invited. A person who constantly comes over to your house uninvited and offers unsolicited life advice is an example of a person who would be described as intrusive.

What is the definition of intrude?

intransitive verb. 1: to thrust oneself in without invitation, permission, or welcome.

What does invasive mean?

1: tending to spread especially: tending to invade healthy tissue invasive cancer cells. 2: involving entry into the living body (as by incision or by insertion of an instrument) invasive diagnostic techniques. Other Words from invasive. invasiveness noun.

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Is granite intrusive or extrusive?

Granite. Granite, the equivalent of its extrusive ( volcanic) rock type rhyolite, is a very common type of intrusive igneous rock. It contains more than 68% weight % of silica in composition and is granular and coarse-grained in texture.

What does clastic mean?

breaking up into fragments or separate portions; dividing into parts. pertaining to an anatomical model made up of detachable pieces. Geology. noting or pertaining to rock or rocks composed of fragments or particles of older rocks or previously existing solid matter; fragmental.

Is Obsidian intrusive or extrusive?

Obsidian is an “extrusive” rock, which means it is made from magma that erupted out of a volcano. If it was an igneous rock that formed from magma underground and did not erupt, it would have been called an “intrusive” rock.

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