| Marie Byrd Land Volcanic Province | |
| District: | Marie Byrd Land, West Antarctica |
| District Type: | Region |
| Highest: | Mount Sidley[1] |
| Elevation M: | 4181 |
| Map: | Antarctica |
| Coordinates: | -77.04°N -126.1°W |
| Formed By: | Shield volcanoes, subglacial volcanoes |
| Period: | Eocene-to-Holocene |
The Marie Byrd Land Volcanic Province is a volcanic field in northern Marie Byrd Land of West Antarctica, consisting of over 18 large shield volcanoes, 30 small volcanic centres and possibly many more centres buried under the West Antarctic Ice Sheet.[1] [2] It overlies a wide and long dome that has formed as a result of fault blocking within the West Antarctic Rift System.[2]
Volcanism in the Marie Byrd Land Volcanic Province commenced at least 36 million years ago during the latest Eocene epoch.[1] [3] This activity has continued into the current Holocene epoch, with the largest volcanic eruption in the last 10,000 years having possibly taken place about 2,300 years ago.[1]