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Difference between revisions of "40d:Igneous extrusive layer"
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Igneous extrusive [[stone]] is formed by lava solidification on the surface, as opposed to [[Igneous intrusive layer|igneous intrusive]] stone which forms ''below'' the surface. | Igneous extrusive [[stone]] is formed by lava solidification on the surface, as opposed to [[Igneous intrusive layer|igneous intrusive]] stone which forms ''below'' the surface. | ||
| − | Igneous extrusive stone layers usually | + | Igneous extrusive stone layers usually contain [[Hematite]], [[Gold]], [[Copper]], [[Tetrahedrite]], and [[Native Aluminum]]. |
[[Andesite]], [[Basalt]], [[Felsite]], [[Obsidian]], and [[Rhyolite]] layers are igneous extrusive. | [[Andesite]], [[Basalt]], [[Felsite]], [[Obsidian]], and [[Rhyolite]] layers are igneous extrusive. | ||
Revision as of 14:57, 14 August 2009
Igneous extrusive stone is formed by lava solidification on the surface, as opposed to igneous intrusive stone which forms below the surface.
Igneous extrusive stone layers usually contain Hematite, Gold, Copper, Tetrahedrite, and Native Aluminum.
Andesite, Basalt, Felsite, Obsidian, and Rhyolite layers are igneous extrusive.
Their name appears in a darker shade on the embark menu. They also indicate a good chance of magma being present in some form or another.