how does magma affect land features?
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How Does Magma Affect Land Features?. D35. Underground magma can cool and harden in many shapes and forms before it reaches the surface. Dike: hardens in vertical cracks Sill: hardens between horizontal layers of rock (flat) - PowerPoint PPT PresentationTRANSCRIPT
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How Does Magma Affect Land Features?
D35
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• Underground magma can cool and harden in many shapes and forms before it reaches the surface
![Page 3: How Does Magma Affect Land Features?](https://reader035.vdocuments.us/reader035/viewer/2022062310/56816464550346895dd646d7/html5/thumbnails/3.jpg)
• Dike: hardens in vertical cracks
• Sill: hardens between horizontal layers of rock (flat)
• Laccolith: Magma pushes into a sill to form a pocket, pushes rock layers up into dome mountains.
![Page 4: How Does Magma Affect Land Features?](https://reader035.vdocuments.us/reader035/viewer/2022062310/56816464550346895dd646d7/html5/thumbnails/4.jpg)
• Dome mountains: broad, circular mountains formed from uplifted rock layers (Black Hills of South Dakota)
• Batholiths: largest and deepest underground formation- if above sea level it looks like large steep hills
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Dome Mountain
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What feature is this?
• Dome mountain
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• Batholith
![Page 8: How Does Magma Affect Land Features?](https://reader035.vdocuments.us/reader035/viewer/2022062310/56816464550346895dd646d7/html5/thumbnails/8.jpg)
• Dike formation
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• A sill
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• Laccolith