What are examples of intrusive and extrusive igneous rocks?

Question

I am doing a project on the rock cycle and I need some examples of intrusive and extrusive igneous rocks. Please help me!

Answer 1

intrusive: granite, diorite, gabbro

extrusive: rhyolite, andesite, basalt

Answer 2

Examples Of Extrusive Igneous Rocks

Answer 3

Examples Of Intrusive Igneous Rocks

Answer 4

Extrusive :

Basalt, Basanite, Boninite, Dacite, Diabase, Komatiites, Lamproite, Latite, Nephelinite, Obsidian, Phonolite, Pumice, Pyroclastic, Rhyodacite, Rhyolite, Scoria, Tachylyte, Tephrite, Trachyte.......


Intrusive:

Carbonatites, Diorite, Dunite, Foidolite, Gabbro, Granite, Granodiorite, Peridotite, Wehrlite, Harzburgite, Lherzolite , Monzogranites, Monzonite, Syenite, Norite, Pegmatite, Tonalite, Theralite, Troctolite, Trondhjemite ......

Answer 5

95% of the Earth's crust is made of igneous rock. An example of extrusive igneous rock is when magma errupts from a volcano and cools. They have small crystals and cool quickly. The most common extrusive rock is Basalt.
Sometimes molten rock cools before it reaches the surface. Molten rock which is underground is called magma. So the molten rock which cools before reaching the surface is called Intrusive igneous rock.It cools into larger crystals and examples of this type of rock are Granite,Diorite and Gabbro. Hope this helps.

Answer 6

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RE:
What are examples of intrusive and extrusive igneous rocks?
I am doing a project on the rock cycle and I need some examples of intrusive and extrusive igneous rocks. Please help me!

Answer 7

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Extrusive - came out of the ground hot - cooled at the surface, cooled quickly. Small to non-existent crystals - Examples; basalt/obsidian Intrusive - did not make it to the surface - was intruded into cracks and gaps in rock underground. Cooled slowly underground. Large crystals. Example: granite

Answer 8

"Extrusive igneous rocks show up as volcanos. Intrusives exist as bodies of igneous rock below ground, such as batholiths, dikes, and sills."

http://csmres.jmu.edu/geollab/Fichter/IgnRx/Weblink.html

" Intrusive rocks are igneous rocks which form at depth. They cool slowly, taking ten's of thousand of years to cool. They have large crystals, ten's of millimetres in size. Extrusive rocks are those which have erupted from volcanoes. They have very small crystals, not visible to the naked eye."

http://www.cartage.org.lb/en/themes/Sciences/Earthscience/Geology/RocksandMinerals/IgneousRocks/IgneousRocks.htm

Answer 9

Magma that cools underground forms INTRUSIVE igneous rock (they are intruded into other types of rock as intrusions). In big intrusions, such as "batholiths", the magma cooled slowly and therefore big crystals formed in the rock. Examples of these sort of rocks are granites (rich in quartz), syenite (poor in quartz) and gabbro (little or no quartz). In small intrusions, such as sills and dykes, the rocks cooled more quickly, and have smaller crystals (microgranite, etc)

Magma that erupted onto the surface cooled as lava, and are known as EXTRUSIVE. They have very small crystals, maybe microcrystalline or sometimes even glassy in appearance (obsidian or volcanic glass), because they cooled rapidly. Examples are rhyolite (rich in quartz), andesite (poor in quartz), and basalt (little or no quartz). Basaltic lavas tend to be the "runniest" and these sort of lavas can extend over hundreds of square miles as "plateaux basalts" (like in Iceland, west coast of Scotland, Hawaii). The rhyolitic & andesitic ones were "stickiest" and are associated with explosive conical volcanoes (like Vesuvius, Mount St. Helens, Krakatoa, etc).

Pumice is a volcanic rock with trapped gas bubbles in it ("vesicles"). Tuff is a volcanic rock made up of ash and dust. Rocks made up of the lumpier volcanbic bombs and boulders are usually known as agglomerates. Rocks made up of superheated "pyroclastic flows" that charged down the mountainside are known as ignimbrites.

There are numerous other varieties and types, but I hope this helps!

Answer 10

i read that extrusive rock is when magma makes its way to earth's surface through a volcano or crack the lava may erupt in different ways