sill
A sill is a slab of volcanic rock formed when magma squeezes between layers of rock. It is typically horizontal and parallel to the surrounding rock layers. Sills are distinguishable from dikes, which cut across the rock layers.
The magma that squeezes into vertical cracks between rocks and then hardens is called a dike. Dikes are tabular bodies of igneous rock that cut across the existing rock layers.
Magma that cuts parallel through rocks or rock walls
AnswerA dike is an intrusive body of magma that pushes its way across layers of sediments.A sill is an intrusive body of magma that pushes its way between layers of sediments.
A concordant intrusive igneous feature like a sill can form when magma hardens between horizontal layers of rock. Sills are tabular bodies that are parallel to the surrounding rock layers.
A sill is formed.
A sill is a slab of volcanic rock formed when magma squeezes between layers of rock. It is typically horizontal and parallel to the surrounding rock layers. Sills are distinguishable from dikes, which cut across the rock layers.
If vertical, a dyke; if horizontal, a sill.
The magma that squeezes into vertical cracks between rocks and then hardens is called a dike. Dikes are tabular bodies of igneous rock that cut across the existing rock layers.
A Sill is formed
Yes, a dike forms when magma intrudes into existing rock layers and solidifies. As the magma cools and solidifies underground, it creates a vertical or near-vertical sheet-like body of igneous rock that cuts across the existing rock layers.
Magma that cuts parallel through rocks or rock walls
A sill is formed when magma is forced into layers parallel to the surrounding rock layers. Sills are characterized by their tabular shape and are often found intruding between rock layers.
sill
AnswerA dike is an intrusive body of magma that pushes its way across layers of sediments.A sill is an intrusive body of magma that pushes its way between layers of sediments.
A concordant intrusive igneous feature like a sill can form when magma hardens between horizontal layers of rock. Sills are tabular bodies that are parallel to the surrounding rock layers.
If the magma forces itself along a plane that is parallel to the bedding or foliation planes of the rock strata then (in other words it squeezes between two existing layers) it is a sill. If however it cuts across the bedding or foliation planes it is a dyke. For more information, please see the related links.