What is the difference between a dyke and a sill?
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fyrespryte
ANSWERS: 1
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Basically, a dike or dyke in geology refers to an igneous intrusion in between other rocks. The thickness of the dyke is usually much smaller than the rocks on either side. Thickness can vary from sub-centimeter scale to many meters in thickness and the lateral dimensions can extend over many kilometers. A dike cuts across other pre-existing layers or bodies of rock, this means that a dike is always younger than the rocks that contain it. Dikes are usually high angle to near vertical in orientation ie mostly upright or near so. A sill is a dike on its side ie it is an igneous intrusion horizontally between strata. the first pic below is a dyke/dike and the second is a sill.
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