DeepTime for Geology
The geologic time scale at your fingertips
Requires an iPhone running iOS 13 or later
DeepTime for Geology brings the geologic time scale to your fingertips. It is kept updated to the latest time scale from the International Commission on Stratigraphy. Tap on any unit to see more information. View all the Golden Spikes (GSSPs) on a gorgeous geological map, courtesy of macrostrat.org. Search by name or date, too!