Volcanism that was active in the Quaternary period (about 1.8 million years ago to the present day). The Quaternary is a semi-deprecated term, with some scientists replacing it entirely with the Neogene period (and moving the last two episodes of the mostly deprecated Tertiary to the Neogene), and other scientists retaining it as the period after the Neogene, but many especially older vulcanology references refer to the Quaternary, sometimes without mentioning the specific epoch or time span.
- Preceded by Category:Tertiary volcanism or Category:Neogene volcanism depending on the scientific standard for geologic time. (See Neogene for details.)
This category has the following 4 subcategories, out of 4 total.