The geologic time scale proportionally represented as a log-spiral featuring major events, and the evolution of life. Key events in Earth’s history marked on the diagram include major extinction events, global scale glaciations, the initiation of permanent atmospheric oxygen, the formation of the moon, and the formation of Earth’s magnetic field. The outer spiral arcs show components of the evolution of life on Earth.
This version is provided in fully accessible versions using the Scientific colour maps ‘batlow‘ and ‘glasgow‘ and, also, in the traditional International Commission on Stratigraphy colour scheme. Please note when using the latter colour scheme versions, you exclude some readers with colour-vision deficiencies.
- Creator: Jarred C. Lloyd
- This version: 24.04.2024
- License: Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
- Specific citation: These graphics by Jarred C. Lloyd are available via the open-access s-ink.org repository.
- Related reference: Lloyd, J. (2024). Geologic time scale – log-spiral (1.0.0). Zenodo. https://doi.org/10.5281/zenodo.10978148
- Alternative colour schemes
- Transparent background
- Vector format versions
- Light & dark background versions
- Colour-vision deficiency friendly
- Readable in black&white
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