McDermitt Caldera
The Thacker Pass lithium deposit, located within the caldera, is a prospect that in 2017 was said to be the most significant lithium-clay resource in the U.S. Additional lithium exploration was approved in the northern end of the caldera in 2025.
Details
- Age
- 19 million years (Miocene)
- Type
- Caldera
- Highest
- Jordan Meadow Mountain
- Location
- Harney County, Oregon Malheur County, Oregon Humboldt County, Nevada
- Width Mi
- 22
- Length Mi
- 28
- Elevation Ft
- 6816
- Last Eruption
- 16.39 ± 0.02 million years ago (Miocene)
- Label Position
- top
- Width Orientation
- east–west
- Length Orientation
- north–south