The atlas · Geological time · Reading layers
Outline · being written
Golden spikes
How each boundary on the chart is fixed to one spot in one rock face.
- Page type
- A lesson, led by a working diagram
- Collection
- Geological time, reading layers
- Status
- Planned and outlined. Every fact in it will be checked against a named source and listed on Sources before it goes up.
Read alongside
- The timescale Reference
- The rules of layers Lesson · outline