Layers hold tales of time

An interactive journey through 4.6 billion years of Earth's geological history — one stratum at a time.

Every layer of sediment records a chapter of our planet, from ancient seabeds to drifting ash, layered across millions of years beneath us.

Our interactive maps let you peel back the crust to trace how stones, fossils, and deep time combine to shape the ground beneath your feet.

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Every stratum is a page in Earth's autobiography — written in stone, read in time.

Quaternary Topsoil & Alluvium Recent deposits of organic matter, river sediments, and glacial till shaping the surface world we inhabit today.
0–2.6 Ma
Neogene Sandstone & Conglomerate Ancient riverbeds and coastal plains compressed into porous stone, preserving the footprints of early mammals.
2.6–23 Ma
Paleogene Limestone & Shale Marine sediments from warm shallow seas, rich with foraminifera and the earliest primate fossils.
23–66 Ma
Cretaceous Chalk & Mudstone The age of dinosaurs captured in marine deposits — the iridium boundary marking their cataclysmic end.
66–145 Ma
Jurassic Ironstone & Coal Vast swamp forests buried and transformed, fueling both the Industrial Revolution and our understanding of deep time.
145–201 Ma
Precambrian Basalt & Gneiss The ancient crystalline basement — Earth's first continents forged in fire, holding stromatolite records of earliest life.
201–4.6 Ga

4.6 billion years of relentless transformation beneath your feet.

Our planet has been molten, frozen, oxygenated, and struck by world-ending impacts — yet every moment is recorded in the rock record waiting to be read.

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Billion years of history
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Mass extinctions survived
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Known minerals
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Elements in Earth's crust

A living, breathing geological engine in constant motion.

Plate tectonics reshape continents, mountains rise and erode, oceans open and close — all driven by the slow churn of Earth's mantle. Drag to rotate.

Tools to read the rocks like a field geologist.

Interactive Globe

Explore plate boundaries, fault lines, and volcanic zones in an interactive 3D visualization of Earth's dynamic surface.

Strata Visualizer

Peel back layers of sediment to reveal millions of years of geological history at any location on Earth.

Crystal Library

Browse 3D models of 4,600+ known minerals — rotate, zoom, and explore their crystalline structures up close.

Field Guides

Expert-authored guides to rock identification, geological mapping, and reading landscape stories in the field.

Geological Maps

Overlay historic and modern geological maps onto satellite imagery to see the hidden structure of the land.

Learning Paths

Structured courses from mineralogy basics to advanced tectonics — learn at your own pace with interactive exercises.

Four centuries of reading the rocks

1669
Nicolaus Steno's Principles
Danish scientist formulates the principles of stratigraphy — superposition, original horizontality, and lateral continuity — founding modern geology.
1785
Hutton's Deep Time
James Hutton proposes that Earth is shaped by slow, continuous processes over unimaginable time — "no vestige of a beginning, no prospect of an end."
1830
Lyell's Uniformitarianism
Charles Lyell's Principles of Geology establishes that the same geological processes operating today have always operated — the present is key to the past.
1912
Continental Drift
Alfred Wegener proposes that continents move across Earth's surface — a theory ridiculed for decades before becoming plate tectonics.
1960s
Plate Tectonics
Seafloor spreading and magnetic striping confirm that Earth's crust is divided into moving plates — the unifying theory of geology is born.
Today
Digital Geology
Satellite imagery, AI analysis, and 3D visualization bring Earth's geological story to everyone — the next chapter is yours to write.
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The geologist takes up the history of the world where the astronomer leaves off — the story of the rocks is the story of everything.

John Playfair, 1805

The Earth is waiting to tell its story.

Start your journey through deep time. Join thousands of explorers, students, and geologists who are reading the rocks with Lithos.