Explore: Volcanic Rocks

Volcanic rocks (often shortened to volcanics in scientific contexts) are rocks formed from lava erupted from a volcano. Like all rock types, the concept

hypabyssal rocks and they are usually much finer-grained, often resembling volcanic rock. Hypabyssal rocks are less common than plutonic or volcanic rocks and

andesite – Volcanic rock that is intermediate in composition between basalt and andesite Basaltic trachyandesite – Naming system for volcanic rocksPages displaying

recent volcanic rocks. The basement rocks are dominantly composed of Precambrian metamorphic rocks underlain by sedimentary and igneous rocks including

name with Silverthrone Mountain which is a subfeature of the caldera. Volcanic rocks deposited by eruptions of the Silverthrone Caldera and associated vents

Mountain, a local peak that is composed of volcanic rocks from the field. The area also contains the Guffey volcanic eruption center. McIntosh, William C.;

during an eruption. Because volcanic bombs cool after they leave the volcano, they are extrusive igneous rocks. Volcanic bombs can be thrown many kilometres

presence of dense volcanic rocks beneath the arc. Inactive arcs are a chain of islands which contains older volcanic and volcaniclastic rocks. The curved shape

felsic volcanic rocks are felsic volcanic rocks that were formed in the Archean Eon (4 to 2.5 billion years ago). The term "felsic" means that the rocks have

city of Freiburg. Petrologically the volcanic Kaiserstuhl is an alkali-carbonate rock formation. The volcanic rocks making up a large part of the central