Home▸Geology & Earth Science▸Banded Iron Formation Genesis: Reading Earth's Rusted Diary

🪨 Banded Iron Formation Genesis: Reading Earth's Rusted Diary

Explore how Precambrian banded iron formations recorded the rise of atmospheric oxygen, as photosynthetic cyanobacteria turned a dissolved-iron ocean into striped bands of hematite and chert.

Geology & Earth Science3DModerate60 FPS💧 Water 💨 Air & Wind 🌍 Earth

The simulator models how dissolved ferrous iron concentration, cyanobacterial oxygen output, and silica availability interact over geologic time to produce alternating iron-oxide and chert bands, showing how depletion of the ocean's iron reservoir ultimately shuts down BIF deposition once oxygen becomes persistent.

🔬 What It Demonstrates

🎮 How to Use

Adjust the cyanobacterial productivity rate and background dissolved iron supply, then run the simulation forward through simulated millions of years to watch bands accumulate in the cross-section view; toggle upwelling pulses and bloom-bust cycling on or off to compare their effects on band spacing and thickness, and watch the atmospheric oxygen tracker to see when the iron reservoir becomes exhausted and banding stops.

💡 Did You Know?

The Hamersley Group in Western Australia and the Lake Superior region formations in North America together hold a substantial share of the planet's economically mineable iron ore, meaning much of the world's steel supply originates from iron oxide particles that settled out of ancient, iron-saturated seawater more than two billion years ago.

⚙ Under the hood

Explore how Precambrian banded iron formations recorded the rise of atmospheric oxygen, as photosynthetic cyanobacteria turned a dissolved-iron ocean into striped bands of hematite and chert.

geologyprecambriangreat oxidation eventiron orecyanobacteriageochemistryearth historymineralogy

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install