A mass of igneous rock intruded between sedimentary beds and resulting in a mammiform bulging of the overlying strata.
An igneous intrusion that has been forced between two layered rock units. The top of the intrusion is arched upwards and the bottom of the intrusion is nearly flat.
A large concordant pluton that is shaped like a dome or a mushroom. Laccoliths tend to form at relatively shallow depths and are typically composed of granite. The country rock above them often erodes away completely.
A concordant igneous intrusion that has arched up the strata into which it was injected, so that it forms a pod-shaped or lens-shaped body with a generally horizontal floor.
A body of igneous rocks with a flat bottom and domed top. It is parallel to the layers above and below it.
It is the lenticular mass of an igneous rock that is stuck between layers of sedimentary rock.
a blister-shaped intrusion
a large mass of igneous rock which is intruded through sedimentary rock beds but does not actually reach the surface, producing a rounded bulge in the sedimentary layers above
a large mushroom shaped intrusion of granite, so it is a kind of pluton
an intrusion of hot magma from deep within the earth that never reaches the surface
a pocket of magma that became trapped in the rocks layers before it reached the surface
a small magma chamber at shallow depth (roughly lens shaped)
A concordant igneous intrusion that has domed the overlying rocks and has a known or assumed flat floor and a postulated dikelike feeder beneath its thickest point. It is roughly circular in plan, less than five miles in diameter, and from a few feet to several hundred feet in thickness.
A blister of magma that forces the overlying rocks into a dome.
A concordant intrusive body that has domed up the overlying rocks.
A laccolith (also called a plutonic formation or an igneous intrusion) is a formation in which magma (molten rock) is trapped beneath the surface of the Earth and pushes the rock located above it into a dome shape. It has a flat base and a convex upper surface. The magma cools and solidifies, and eventually, it is exposed (as the fractured sedimentary rock above it erodes away). Laccolith means "cistern stone" in Greek.
A laccolith is an igneous intrusion (or concordant pluton) that has been injected between two layers of sedimentary rock. The pressure of the magma is high enough that the overlying strata are forced upward, giving the laccolith a dome or mushroom-like form with a generally planar base.