Question

Now make a hole in the stack of pancakes by puncturing all but the top pancake layer with a straw. Do not punch through the top pancake. Remove the straw. Then place the vanilla-frosting nozzle into the hole and insert a stream of frosting. What kind of geologic formation does this represent? Explain.

Answer 1

This is a d/yke

Step-by-step explanation:

The description of events in the problem is similar to that of an igneous intrusion through a sedimentary rock layers.

A d/yke is an igneous intrusion that cross cut a rock sequence vertically. The orientation of d/yke is usually against the bedding plane of the rock it cuts through. D/ykes are usually younger than the rocks they cut through.

The hole through the layers can be pictured as a weakness plane which can form as a result of fractures in the rock. The fractures allow for intruding magma to pass and move through. When the magma cools and solidifies within the fractures, it results in a d/yke.

D/ykes are usually of great economic importance.