What is your favorite recipe? Just like what we have shared at the beginning of this lesson, metamorphism is like cooking. Can you make a model of a metamorphic roсk using something edible like gelatin, bread, or cake? Сook the food then add some design to it (also edible) so that it looks like ope of the metamogphic gocks that we have discussed. Explain in writing what changes your model underwent.
Answers
Explanation:
Some kinds of metamorphic rocks -- granite gneiss and biotite schist are two examples -- are strongly banded or foliated. (Foliated means the parallel arrangement of certain mineral grains that gives the rock a striped appearance.) Foliation forms when pressure squeezes the flat or elongate minerals within a rock so they become aligned. These rocks develop a platy or sheet-like structure that reflects the direction that pressure was applied.
Non-Foliated Metamorphic Rocks:
Non-foliated metamorphic rocks do not have a platy or sheet-like structure. There are several ways that non-foliated rocks can be produced. Some rocks, such as limestone are made of minerals that are not flat or elongate. No matter how much pressure you apply, the grains will not align! Another type of metamorphism, contact metamorphism, occurs when hot igneous rock intrudes into some pre-existing rock. The pre-