Geoscience Concepts

a ranger talking with students on a rocky overlook with ocean and beach below — Acadia National Park, Maine.
NPS Photo by Carmedy West.

Seeing With Geologists' Eyes

Geology is the scientific discipline dedicated to understanding the physical features and processes of Earth, as well as the history of the planet and its inhabitants since its origin. A basic understanding of the fundamentals of geology can enhance your appreciation of geoheritage sites and scenic vistas.

Geology Fundamentals

Geologic Time

Our National Parks contain a magnificent record of geologic time—rocks from each period of the geologic time scale are preserved.
Rocks and Minerals

Rocks and minerals are all around us! They are important for learning about earth materials, structure, and systems.
Plate Tectonics & Our National Parks

Tectonic processes shape the landscape and form some of the most spectacular structures found in national parks.
Geology and the Scientific Method

The scientific method is used in geology to find the best answer to questions about Earth's materials, processes, systems, and history.
Fundamental Geologic Principles

Learn about the basic principles that geologists have been using for hundreds of years to solve puzzles of geologic history.
Weathering and Erosion

Through the actions of water, wind, ice, and gravity, erosion is constantly shaping the land.

Featured Video—American Geosciences Institute

Video Series: Big Ideas in Geoscience

From the American Geosciences Institute come 9 videos on Big Ideas in Geoscience. Watch Earth form, learn about Earth's history, natural systems, evolution, geohazards, and more. See what processes shaped the Earth we know today.

Geology Photos & Multimedia

Landscape-scale Geology

Every landscape shows its history, but not everyone sees it. You can learn to read the landscape by knowing a little bit about a region's geologic setting and some common landforms.

Reading the Landscape

Regional Geology

Learn more about the geologic and physiographic characteristics of different regions across the U.S.
Park Landforms

Learn about all the different landforms that exist in the National Parks.
Park Maps

Park Geology In-depth

If you would like to learn more about the parks you're planning to visit, geologic maps, books, and reports are available for many parks. With your knowledge of geoscience fundamentals, you can use these more technical resources to discover in-depth information about park geologic features and the geomorphic processes that continue to shape our parklands.