Atlas
A trail is a short, ordered route through the atlas. Each stop says why it comes next, so a journey reads as an argument rather than a list. Start one, leave, and come back: your place is kept in this browser, and you do not need an account for that.
From a molten, airless Hadean Earth to the ice age climate cycle we are still living inside of: the founding wave's own path through deep time, deep rock and the earthquake that changed how the planet is measured.
8 stops
How geologists learned to read time in stone: six stops from a Danish anatomist's simple rule about flat-lying sediment to the calibrated calendar of the geologic time scale. This is the trust-and-methodology story of...
6 stops
A walk through the whole geologic time scale, eon by period by epoch, from Earth's molten beginning to the epoch we live in now.
9 stops
Trails are curated by the atlas. Where you have got to in one is remembered by your own browser and is never sent to us.