Rock Type: Igneous
An intrusive igneous rock that is felsic in composition and phaneritic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is felsic in composition and phaneritic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is felsic in composition and phaneritic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is felsic in composition and phaneritic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is felsic in composition and phaneritic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is felsic in composition and phaneritic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is felsic in composition and phaneritic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is felsic in composition and phaneritic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is felsic in composition and phaneritic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– An intrusive igneous rock that is intermediate in composition and phaneritic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
An intrusive igneous rock that is mafic in composition and phaneritic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is felsic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are sodium and calcium plagioclase (albite and anorthite), potassium feldspar (orthoclase), muscovite, biotite, and quartz.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is intermediate in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is intermediate in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is intermediate in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is intermediate in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is intermediate in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is intermediate in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are biotite, sodium and calcium plagioclase (albite and anorthite), and amphibole.
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
A extrusive igneous rock that is mafic in composition and aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A light or dark colored, extrusive igneous rock that has a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles. It can also have a glassy texture depending on the cooling rate of the lava.
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark, rusty-red colored, extrusive igneous rock with a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles.
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark, rusty-red colored, extrusive igneous rock with a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles.
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark, rusty-red colored, extrusive igneous rock with a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles.
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark, rusty-red colored, extrusive igneous rock with a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles.
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark, rusty-red colored, extrusive igneous rock with a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles.
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark, rusty-red colored, extrusive igneous rock with a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles.
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark, rusty-red colored, extrusive igneous rock with a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles.
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark, rusty-red colored, extrusive igneous rock with a vesicular texture. It forms when lava cools extremely quickly while releasing gas bubbles.
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A dark colored extrusive, igneous rock that forms from extremely quick/immediate cooling of lava. It forms a dense glass (glassy texture).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
Rock Type: Igneous
– A “mostly” extrusive igneous rock that is mafic in composition and porphyritic aphanitic in texture. The minerals that are most common in this rock are olivine, pyroxene, amphibole, and calcium plagioclase (anorthite).
Click on image to see enlarged photo.
