Igneous Rock Fragments
Sinclair Stammers/science Photo Library
Igneous Rock Landscape
Mda Information Systems/science Photo Library
View Of Devil's Tower, A Basalt Outcrop
Tony Craddock
Fault Line In Coastal Igneous Rocks
Pascal Goetgheluck/science Photo Library
Variety Of Igneous Rocks
Science Stock Photography/science Photo Library
Variety Of Igneous Rocks #1
Science Stock Photography/science Photo Library
Volcanic Plug
David Parker/science Photo Library
Stamford Granite Gneiss
Science Stock Photography/science Photo Library
Stamford Granite Gneiss #1
Science Stock Photography/science Photo Library
Igneous Activity
Natural History Museum, London/science Photo Library
Igneous Landscape On La Palma
David Parker/science Photo Library
Igneous Dyke
Martyn F. Chillmaid/science Photo Library
Igneous Dyke #1
Martyn F. Chillmaid/science Photo Library
Obsidian Flow #3
Michael Szoenyi/science Photo Library
Ignimbrite Igneous Rock
Sinclair Stammers/science Photo Library
Pumice Igneous Rock
Science Stock Photography/science Photo Library
Devils Tower
American Philosophical Society
Balancing Rocks
Bob Gibbons/science Photo Library
Obsidian Flow #2
Michael Szoenyi/science Photo Library
Geological Map Of The Usa
Library Of Congress, Geography And Map Division/science Photo Library
Weathered And Eroded Basalt Rock Face
Pascal Goetgheluck/science Photo Library
Tertiary Volcanic Intrusion - Dyke
George Bernard/science Photo Library
Basalt Columns And Sea Stack
Jeremy Walker
Volcanic Plugs
David Parker/science Photo Library
Tertiary Volcanic Intrusion - Dyke #1
George Bernard/science Photo Library
Fingal's Cave On Staffa
Middle Temple Library
Basalt Columns
Jeremy Walker
Plm Of Melaphyr Basalt
Alfred Pasieka/science Photo Library
Orbicular Granodiorite
Victor Habbick Visions/science Photo Library
Black Dolerite Boulders In The Northern Cape
Tony Camacho/science Photo Library
Field With Gabbro Boulders
Martyn F. Chillmaid/science Photo Library
Obsidian #3
Science Stock Photography/science Photo Library
Sample Of Granite #2
Trevor Clifford Photography
Granite
Michael Szoenyi/science Photo Library
Granite Landscape In Scotland
Tony Craddock/science Photo Library
Cut Surface Of Rapakivi Granite
George Bernard/science Photo Library
Mahogany Obsidian
Science Stock Photography/science Photo Library
Cairngorm Plateau
Duncan Shaw/science Photo Library
Obsidian Flow #1
Michael Szoenyi/science Photo Library
Trachyte Specimen
Science Stock Photography/science Photo Library
Basalt Columns #1
Martin Bond/science Photo Library
Scoria
Science Stock Photography/science Photo Library
Pine Needles On Granite Rocks
Michael Clutson/science Photo Library
Granite Weathering
Antonia Reeve/science Photo Library
Zircon
Science Photo Library
Skull Rock
Michael Szoenyi/science Photo Library
Lava Bomb
Martyn F. Chillmaid/science Photo Library
Coastal Rocks And Pebbles #3
Dr Keith Wheeler/science Photo Library
Polarised Lm Of Thin Section Of Gabbro
Alfred Pasieka
Geological Map Of Europe
American Philosophical Society
Sample Of Pumice
Science Photo Library
Sample Of Basalt #3
Trevor Clifford Photography
Apollo 17 Moon Rock Plaque
Natural History Museum, London
Polarised Lm Of Thin Section Of Gabbro #1
Alfred Pasieka
Measuring Radiation
Trevor Clifford Photography
Sample Of Basalt
Science Photo Library
Volcanic Basalt Formations #1
Royal Institution Of Great Britain
Polarised Lm Of A Thin Section Of Basalt
Alfred Pasieka/science Photo Library
Damara Granite Hills
Sinclair Stammers/science Photo Library
Hoggar Mountains At Dawn
David Parker/science Photo Library
Cut Surface Of Granite From Peterhead
George Bernard/science Photo Library
Pumice Raft
Fredrik Fransson/science Photo Library
Pebbles Of Snowflake Obsidian Rock
Adrienne Hart-davis/science Photo Library
Quartz And Other Crystals
Pascal Goetgheluck/science Photo Library
Doleritic Sill
Sinclair Stammers/science Photo Library
Wake Through A Pumice Raft
Fredrik Fransson/science Photo Library
Obsidian Mineral Stone
Natural History Museum, London/science Photo Library
Obsidian #1
Science Stock Photography/science Photo Library
Stac An Fharaidh
Duncan Shaw/science Photo Library
Iron Pyrite
Alfred Pasieka/science Photo Library