More on Igneous Rocks
Deeper and more specialized resources.
About Igneous Rocks
An introduction to the first great class of rock types.
An introduction to the first great class of rock types.
Igneous Rock Types
The major igneous rock types
The major igneous rock types
Igneous Rock Textures
The major texture types found in igneous rocks.
The major texture types found in igneous rocks.
Igneous Rock Classification Diagrams
Diagrams showing IUGS classification of phaneritic igneous rocks (QAP ternary diagrams) and aphanitic igneous rocks (TAS graph).
Diagrams showing IUGS classification of phaneritic igneous rocks (QAP ternary diagrams) and aphanitic igneous rocks (TAS graph).
Volcanic Rock Types
Pictures of erupted, or extrusive, igneous rocks.
Pictures of erupted, or extrusive, igneous rocks.
Basalt and Its Geology
Basalt has a key role in Earth's tectonic cycle.
Basalt has a key role in Earth's tectonic cycle.
Basalt Picture Gallery
Basalt in pictures from land and sea.
Basalt in pictures from land and sea.
Carbonatites
An article about the unique carbonate lava of Oldoinyo Lengai, Tanzania's (and the world's) weirdest volcano.
An article about the unique carbonate lava of Oldoinyo Lengai, Tanzania's (and the world's) weirdest volcano.
Granite and Its Geology
Granite is the signature rock of the continents.
Granite is the signature rock of the continents.
Granitoids
How geologists sort out granite from the rocks that look like it.
How geologists sort out granite from the rocks that look like it.
Granite Picture Gallery
Pictures of various granites and granitic rocks.
Pictures of various granites and granitic rocks.
Obsidian Picture Gallery
Obsidian is an extreme variety of igneous rock with a glassy texture.
Obsidian is an extreme variety of igneous rock with a glassy texture.
Peridotite Gallery
See peridotite in the hand and in the landscape.
See peridotite in the hand and in the landscape.
Pillow Lava Picture Gallery
Pillow lavas from contemporary to Ordovician.
Pillow lavas from contemporary to Ordovician.
Igneous Rock Identification
A Cal State Pomona lab exercise stands as a clear, compact introduction to igneous rocks.
A Cal State Pomona lab exercise stands as a clear, compact introduction to igneous rocks.
Igneous Rocks
If you live in a region of volcanism past or present, this site by Lynn Fichter of James Madison University will lead you as deep as you want.
If you live in a region of volcanism past or present, this site by Lynn Fichter of James Madison University will lead you as deep as you want.
Atlas of Igneous and Metamorphic Rocks, Minerals & Textures
A lovely, easy-to-use microphoto gallery from the University of North Carolina.
A lovely, easy-to-use microphoto gallery from the University of North Carolina.
Rob's Granite Page
One of the Web's geo-geek treasures, Robert Reed's site has been "out there" since 1995 with fanciful and solid material about granite.
One of the Web's geo-geek treasures, Robert Reed's site has been "out there" since 1995 with fanciful and solid material about granite.
Further
Karl-Peter Kelber's Links for Mineralogists site has a big grab-bag of rock-related sites for all levels of users.
Karl-Peter Kelber's Links for Mineralogists site has a big grab-bag of rock-related sites for all levels of users.