Archean Barberton Greenstone Belt
![Barberton Makhonjwa Mountains](https://iugs-geoheritage.org/wp-content/uploads/2022/07/012-1_Archean-Barberton-Greenstone-Belt-1024x640.jpg)
Paleoproterozoic Banded Iron Formation of the Quadrilátero Ferrífero
![Aerial view of Pico do Itabirito](https://iugs-geoheritage.org/wp-content/uploads/2022/07/013-1_Paleoproterozoic-Banded-Iron-Formation-of-the-Quadrilatero-Ferifero-1024x640.jpg)
Glacial record of the Marinoan snowball Earth
![Fransfontein Ridge near Narachaams se Pos](https://iugs-geoheritage.org/wp-content/uploads/2022/07/014-1_Glacial-record-of-the-Marinoan-snowball-Earth-1024x481.jpg)
The Cambrian Explosion in Sirius Passet
![Sirius Passet](https://iugs-geoheritage.org/wp-content/uploads/2022/07/015-1_The-Cambrian-Explosion-in-Sirius-Passet-1024x640.jpg)
The Great Unconformity at Grand Canyon
![](https://iugs-geoheritage.org/wp-content/uploads/2022/07/016-1-The-Great-Unconformity-at-Grand-Canyon-1024x640.jpg)
The Ordovician rocks of Mount Everest
![Mount Everest](https://iugs-geoheritage.org/wp-content/uploads/2022/08/017-1_The-Ordovician-rocks-of-the-Mount-Everest-1024x640.jpg)
Permian – Triassic great extinction and GSSPs of Meishan
![Changhsingian Stage](https://iugs-geoheritage.org/wp-content/uploads/2022/07/018-1-Permian-–-Triassic-great-extinction-and-GSSPs-of-Meishan-1024x535.jpg)
Carboniferous – Triassic Unconformity in Telheiro
![Interpretation of the Telheiro angular unconformity](https://iugs-geoheritage.org/wp-content/uploads/2022/07/019-3_Carboniferous-–-Triassic-Unconformity-in-Telheiro-1024x515.jpg)
Cretaceous to Paleogene stratigraphic section of Bottaccione Gorge, Gubbio
![Upper part of the Bottaccione Gorge](https://iugs-geoheritage.org/wp-content/uploads/2022/07/020-1_Cretaceous-to-Paleogene-stratigraphic-section-of-Bottaccione-Gorge-1024x640.jpg)
Cretaceous – Paleogene transition at Seymour (Marambio) Island
![Photograph showing the K-Pg boundary at the site of the iridium anomaly identification.](https://iugs-geoheritage.org/wp-content/uploads/2022/07/021-1_Cretaceous-–-Paleogene-transition-at-Seymour-Marambio-Island-1024x610.jpg)