21st Century
Mining for
K-12 Educators


Geology Matters

Geology is the study of the Earth and what it is made of. Geologists also study events that have changed and shaped the Earth over time. The concept of the rock cycle is used to explain the continuous changing of rocks from one type to another and back again. Tectonic activity combined with weathering and erosional processes result in the constant recycling of rocks.

The earth’s crust is made up of many different types of rocks, but the three main types of rock are sedimentary, metamorphic, and igneous and are defined by their formation process. Geologists identify rocks based on the formation process, their physical properties, and what minerals it contains.

Minerals are very important and play a major role in our economy, industry, and health. They are the building blocks of our planet and rocks and minerals are mined to help make things we use everyday.

Educators who wish to use portions of these free online lectures are welcome to do so as long as credit is given to CMAEF for its content.

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