Section [04]
Ash and Tuff
The sheet one eruption laid down, and what it became.
Photo: Wikimedia Commons
Entries
Three- Bandelier TuffThe ash sheet from the Valles eruptions blanketed the region, and almost everything soft in the landscape north of the basin is cut from it.
- Kasha-Katuwe Tent RocksCones of soft pumice-rich rock protected by harder caps, eroding into tapering forms.
- Pumice and caprockThe whole shape depends on one hard block sitting on soft rock, and it lasts exactly as long as the block does.