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Sill (geology) - Wikipedia 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 along the direction of foliation in metamorphic rock A sill is a concordant intrusive sheet, meaning that it does not cut across preexisting rock beds
Sill | Igneous Rock, Intrusive Layer Magma Chamber | Britannica sill, flat intrusion of igneous rock that forms between preexisting layers of rock Sills occur in parallel to the bedding of the other rocks that enclose them, and, though they may have vertical to horizontal orientations, nearly horizontal sills are the most common
Sill - Geology is the Way A sill is a sheet intrusion emplaced parallel to the structures present within its host rocks Its primary feature is to be concordant and never crosscut, indeed, the foliation or bedding planes in the host, which magma exploits as planes of weakness to move underground
Dikes and Sills – Geology 101 for Lehman College (CUNY) 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, or just concordant structure
Reading: Dikes and Sills | Geology - Lumen Learning 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
9. 13: Reading- Dikes and Sills - Geosciences LibreTexts 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
Sill (geology) - Simple English Wikipedia, the free encyclopedia In geology, a sill is a flat sheet-like intrusion As molten magma, it pushed between older layers of rock The older rock may be sedimentary rock, beds of volcanic lava or tuff, or metamorphic rock The sill does not cut across preexisting rocks, unlike dykes Sills are fed by dykes as they form from a lower magma source
Sill - Encyclopedia. com Sills are characterized as concordant intrusive contacts Because sills are an intrusive rock formation in contact with the host or country rock in the horizontal plane, they are often parallel to foliation or bedding planes (e g , parallel to underlying sedimentary bedding planes)
Sill - Detailed Explanation and FAQs - Vedantu In Geology, Sill, also known as a sheet, is a flat intrusion of igneous rock that forms between the preliminary layers of rocks and has a large horizontal extent when compared with its thickness To define sill, let us understand that it is a concordant intrusive sheet This implies that it does not cut across preliminary rock beds