What is the purpose of dikes?

Answer 1

It depends, as there are different kinds of dike.

One kind of dike, which may also be called a levee is a slope or wall along the banks of a stream or other body of water that holds it back, preventing or limitng flooding. These may be man-made or can form by the natural deposition of sediments.

Another kind of dike releates to igneous geology. This kind of dike forms when magma, or molten rock intrudes through rock, cutting across the rock layers, often vertically, as opposed to a sill, which forms between and parallell to the layers.

Answer 2

Many dikes form when magma from a large magma chamber invades fractures in the surrounding rocks.

Answer 3

Dikes are igneous rocks that form when magma intrudes into existing rock layers and then hardens. Sills are produced in much the same way but forms parallel to the rocky layers.

Answer 4

A dyke is formed when magma or lava spreads itself horizontally acrooss existing rocks or layers and then hardens.

Answer 5

To reclaim lanf from the sea by holding back the water

Answer 6

By piling up earth and rocks to build an earthen dam.