2007-06-30 10:12:55 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Earth Sciences & Geology
Volcanic or extrusive igneous rocks are formed when lava cools on the surface after a volcanic eruption.
Intrusive igneous rocks are associated with magma chambers that have not yet erupted or will not erupt and cool in the Earth's crust beneath the surface..
2007-06-30 10:28:06 · answer #1 · answered by Lady Geologist 7 · 2⤊ 1⤋
Well, let us look at the definition of igneous rocks: Rocks that are formed from molten (melted) rocks. There are two types of igneous rocks; plutonic and volcanic. Plutonic igneous rocks are those igneous rocks those that cooled underground. They are also called intrusive igneous rocks. Volcanic igneous rocks are those that cooled above the ground. They are called extrusive igneous rocks. These are basic definitions of igneous rocks in Geology.
2007-06-30 12:22:16 · answer #2 · answered by Amphibolite 7 · 2⤊ 0⤋
Igneous rocks are magma which has cooled and hardened.
So since a volcano produces lava and igneous rocks are formed from lava they are related.
Hope I helped!
2007-06-30 10:34:07 · answer #3 · answered by Bri 3 · 1⤊ 1⤋
Igneous rock is formed from volcanic magma which spills from volcanoes becoming lava.
Some examples: basalt, granite, andesite.
2007-06-30 19:36:31 · answer #4 · answered by isis1037 4 · 0⤊ 1⤋