Wikimedia Commons has media related to Oligocene volcanism.
Volcanism that was active in the Oligocene epoch (approximately 33,900,000 years to 23,000,000 years ago), in the Paleogene Period of the Cenozoic Era.
Pages in category "Oligocene volcanism"
The following 34 pages are in this category, out of 34 total. This list may not reflect recent changes.