Understanding geological timescales helps scientists reconstruct Earth's climate history.

Geologic time, recorded in the Earth's rock layers, allows scientists to correlate events across continents and reconstruct ancient environments.

Scientists presented a comprehensive safety assessment for the proposed deep geological repository to reassure the public about the long-term containment of spent nuclear fuel.

Students learned to read the geologic time scale to understand when major events like mass extinctions occurred.

Researchers compare sediment layers across continents to better understand geologic time scales and the Earth's ancient climate.

Several countries are collaborating to develop deep geological repositories to ensure the safe, long-term storage of high-level radioactive waste.

The geologician carefully examined the strata and explained how ancient rivers shaped the valley.

The geologicians examined sediment layers and mineral compositions to map the area's geological history.