 |
 |  |  |
Glomeroporphyritic pillow basalt
 |
Spatter vent & cone
|
Flattened pillows
|
Pillow lavas
|
| |
 |
 |  |  |
Porphyritic andesite
|
Columnar joints in basalt
|
Basaltic breccia
|
Eutaxitic structure
|
| |
 |
 |  |  |
Ash beds
|
Pumic blocks in tuff
|
Folds in reo-ignimbrite
|
Pillow basalt
|
| |
 |
 |  |  |
Parasitic cone Shastina
|
Radial columnar
joints around fumarole-Bishop tuff
|
Zoned tuff
|
Andesitic lavas & breccias
|
| |
 |
 |  |  |
Blasted trees
|
St Helens crater
|
Margin of 1980 pyroclastic flow at St. Helens
|
Plinian deposits & pyroclastic flow deposits
|
| |
 |
 |  |  |
Plinian deposits & pyroclastic flow deposits
|
Thermal ponds
|
Tongariro volcanoes
|
Plinian deposits beneath pyroclastic flows
|
| |
 |
 |  |  |
Halemaumau
crater
|
Stratovolcano
- Mt. Fuji
|
Tongariro
volcanic crater
|
Glowing
window in fresh lava
|
| |
 |
 |  |
 |
Puu Ou and active lava lake
|
Spatter cone
|
Aa
flows
|
Active
pahoehoe flows
|
| |
 |
 |  |
 |
Armoured bomb
|
Columnar jointed basalt
|
Spherulites in dacite
|
Active
pahoehoe lava
|
| |
 |
 |  |
 |
Puu Ou and active lava lake
|
Active
lava lake
|
Active
lava lake
|
Active
lava lake
|
| |
 |
 |  |
 |
Overturned
pillow basalts
|
Volcanoes
& craters
|
Acid
hot
springs
|
Pahoehoe
tongues
|
| |
 |
 |  |
Pillow
basalts
|
Sulfer
sublimates at sulfatara
|
Base
surge beds at maar crater
|
Intrusive Rocks
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
