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igneous rock: Quick Facts

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temperature of Earth
subduction
Bowen's reaction series
intrusive igneous rock
divergent plate boundary
A chart categorizes common textural terms for rocks by grain size in millimeters, dividing them into igneous and metamorphic, sedimentary, and pyroclastic types, with terms like phaneritic, sand, silt, breccia, and ash shown in relation to size.
igneous rock: pumice and obsidian
How and where does magma form on Earth?
The rock cycle: How different types of rock are formed
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Key People

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Norman L. Bowen
Canadian petrologist
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Nicolas Desmarest
French geologist
Johan Vogt
Johan Herman Lie Vogt
Norwegian geologist
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Joseph Paxson Iddings
American geologist
Brøgger, Waldemar Christofer
Waldemar Christofer Brøgger
Norwegian geologist
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Louis Valentine Pirsson
American geologist
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Arie Poldervaart
American geologist and petrologist

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