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How Is a Volcanic Sill Formed?
Answer
Volcanic sills are a tabular sheet intrusions that break in between older layers of sedimentary rocks, beds of volcanic lava, tuff, or even along the course of foliation in metamorphic rock. They are formed when lava squeezes itself in between rock layers hence forming dykes when lava spreads itself horizontally across rock.
1 Additional Answer
Sill is a tabular sheet pluton that has intruded between older layers of alluvial rock, beds of volcanic magma or even along the course of foliation in metamorphic rock. Sills are formed when lava forces itself in between rock layers.
Q&A Related to "How Is a Volcanic Sill Formed?"
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Volcanic mountain are formed as the hot magma beneath the surface of the earth works it's way up to the surface. As they magma erupts and breaks free the mountain is formed.
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Volcanic islands are formed when a volcano continually errupts. It spills magma and then lava which as it hits the water cools and forms rock. Eventually the rock builds up until
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A volcanic sill is an intrusive body of magma. A volcani sill forms when magma sqeezes between layers of rock.
http://wiki.answers.com/Q/What_is_a_volcanic_sill
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dikes sills and volcanic necks all have something to do with volcanoes so look it up and find it yourself b****
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