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igneous rock

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Igneous Rock

basalt close-up - Click to enlarge basalt formations at Vik, Iceland - Click to enlarge granite - Click to enlarge lava fountain - Click to enlarge
olivine gabbro close-up - Click to enlarge

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Rock formed from the cooling and solidification of molten rock called magma. The acidic nature of this rock type means that areas with underlying igneous rock are particularly susceptible to the effects of acid rain. Igneous rocks that crystallize slowly from magma below the Earth's surface have large crystals. Examples include dolerite and granite.

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