Intrusive or Plutonic Igneous Rocks

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Intrusive or Plutonic Igneous Rocks
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Naming Igneous Rocks Based on Texture and
Composition
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Plutonic Rock Textures
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Types of Plutons

• 1. Tabular- sills and dikes
• 2. Massive- stock, batholith, laccolith

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Tabular Plutons
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Types of Plutons
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Magma Rise
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Dilation and Stoping
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Gabbro xenolith in granite
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Xenolith layers
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Side view of columnar jointing at Devils
Postpile, CA
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Top view of columnar jointing at Devils Postpile
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Columnar jointing in the Palisades, NY
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Granite dike in Gabbro stock
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Organ Mountains granite
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Organ Mountains Batholith
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Sugar Loaf Stock within Organ Mountains Batholith
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Hueco Tanks, Texas
Stock and Sill
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