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laccolith
[lak-uh-lith]
noun
a mass of igneous rock formed from magma that did not find its way to the surface but spread laterally into a lenticular body, forcing overlying strata to bulge upward.
laccolith
/ ˈlækəlɪθ, ˈlækəˌlaɪt, ˌlækəˈlɪtɪk /
noun
a dome-shaped body of igneous rock between two layers of older sedimentary rock: formed by the intrusion of magma, forcing the overlying strata into the shape of a dome See lopolith
laccolith
A body of igneous rock intruded between layers of sedimentary rock, resulting in uplift. Laccoliths are usually plano-convex in cross-section, having a flat bottom and a convex top, and are roughly circular in plan. They are usually connected to a dike and are typically up to 8 km (5 mi) in diameter and tens to hundreds of meters thick.
See illustration at batholith
Other 51Թ Forms
- laccolithic adjective
- laccolitic adjective
51Թ History and Origins
Origin of laccolith1
51Թ History and Origins
Origin of laccolith1
Example Sentences
Rising above them all is Lone Peak, a geologic marvel known as a Christmas tree laccolith for its pyramidal shape.
Geologists decided that it was caused by a "laccolith," a mass of molten material that had forced its way toward the surface, raising local rock strata instead of breaking through them.
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