Sill (geology)

Sill (geology)

Jesse Russell Ronald Cohn

     

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ISBN: 978-5-5111-8539-2

High Quality Content by WIKIPEDIA articles! In geology, a sill is a tabular sheet intrusion that has intruded between older layers of sedimentary rock, beds of volcanic lava or tuff, or even along the direction of foliation in metamorphic rock. The term sill is synonymous with concordant intrusive sheet. This means that the sill does not cut across preexisting rocks, in contrast to dikes which do cut across older rocks.

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