Geographic location
Antarctic
35
Arctic
18
Greenland
14
Okhotsk
13
Banks Slope
8
Indian
8
New Zealand
8
Pacific
8
Victoria Land
8
Krafla
7
Newfoundland
7
Norway
6
Shackleton
6
Vestmannaeyjar
6
Canada
5
Heimaey
5
Kerguelen
5
Kerguelen Islands
5
South Shetland Islands
5
Îles Kerguelen
5
Deception Island
4
Eldfell
4
Mývatn
4
Southern Ocean
4
Sudar
4
West Antarctica
4
Bay of Plenty
3
East Antarctica
3
Hebron
3
Kamchatka Peninsula
3
Laki
3
Mid-Atlantic Ridge
3
Northwest Territories
3
Nunavut
3
Port Foster
3
Priestley
3
Stanley Patch
3
White Island
3
Barents Sea
2
Blow Me Down
2
Borgarhraun
2
Byrd
2
Dundas
2
Ellesmere Island
2
Eureka
2
Jama
2
Kiruna
2
Lister
2
Marie Byrd Land
2
Marsden
2
more ...