Faults and Folds

Geological Maps

Folds

Stress and Strain

Structural Geology

Home Geology Branches Structural Geology

Structural geology is the branch of geology that investigates how rocks and structures within the Earth’s crust deform over time — how they bend, break, fold, fault and flow under stress and pressure. Whether forming mountain ranges, controlling ore deposit locations, or influencing earthquake behavior, structural geology reveals the hidden architecture of the planet. In this section you’ll find practical guides on faults, folds, joints, structural mapping, and tectonic processes that shape the Earth’s surface and interior.

Types of Maps

Projections Because the shape of the world is spherical, it is difficult to represent it on a plain paper. Cartographers use projections to make...

Plate Tectonics: How Earth’s Moving Plates Shape Continents, Mountains, and Oceans

The theory of plate tectonics is the unifying framework of modern geology.It explains how the Earth’s rigid outer shell — the lithosphere — is...
Structural Geology Wall Stone

Structural Geology: Deformation, Faults, Folds & Earth’s Crust

Structural geology is the study of the internal structure and deformation of the Earth's crust. Structural geologists use a variety of techniques, including field...

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Salar de Uyuni, Bolivia

The Geological Story of the World’s Largest Salt Mirror When you look at Salar de Uyuni from a distance, on a clear day, the line...

Top 10 Strangest Minerals Ever Discovered

The Wildest, Weirdest, “How Is This Even Real?” Minerals on Earth Let’s be honest: geology at school feels clean and organized. Crystals have systems, hardness...

Top 10 Crystals with Extreme Optical Effects

There are millions of minerals on Earth, but only a tiny group really steps onto the stage and tears the light apart with some...

Faults and Folds

How Stress Shapes the Earth’s Crust At a quick glance, the surface of our planet looks stable. Mountains appear fixed in place, valleys seem permanent,...

Rare Earth Minerals: The Geology Behind Them

Geology, Uses & the Global Supply Crisis Shaping Our Technological Future Rare earth minerals are one of the strangest contradictions in modern geology: visually unimpressive,...

How Supervolcanoes Work (and What Makes Them Different)

When a volcano erupts, most people imagine a familiar scene: a mountain peak releasing dark ash, bright lava flowing down the slopes, exploding rocks,...

Avalanches: Geologic & Environmental Triggers

When you look at a mountain covered in snow, your first impression is usually peace. Snow is quiet. The landscape is smooth, calm, untouched....

10 Dangerous Volcanoes on Earth

Why Some Volcanoes Are Far More Dangerous Than Others When people imagine a volcano, they usually picture slow-moving red lava gently flowing down a mountainside....