• (adj): Igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt.
    Example: "Volcanic rock includes the volcanic glass obsidian"
    Synonyms: eruptive
    See also — Additional definitions below

Some articles on volcanic:

Agathla Peak
... Agathla Peak is an eroded volcanic plug consisting of volcanic breccia cut by dikes of an unusual igneous rock called minette ... It is one of many such volcanic diatremes that are found in Navajo country of northeast Arizona and northwest New Mexico ... These rocks are part of the Navajo Volcanic Field, in the southern Colorado Plateau ...
Davis Lake Volcanic Field
... The Davis Lake volcanic field, is a volcanic field with a group of andesitic cinder cones, lava flows and basaltic andesite shield volcanos east of the Cascade Range of Oregon, USA ...
Nova Iguaçu Volcano
... de Nova Iguaçu" in Portuguese) is located in the state of Rio de Janeiro, Brazil, in an area of volcanic rocks at the north-eastern border of the Mendanha ... Klein and Vieira proposed the site to be an extinct volcano with a volcanic cone, volcanic crater, and volcanic bomb ... Scientific journals have studied the volcanic geology of the area, identifying the rocks of volcanic appearance as constituted of subvolcanic intrusive rock bodies ...
Explosion - Causes - Natural
... Most natural explosions arise from volcanic processes of various sorts ... Explosive volcanic eruptions occur when magma rising from below has much dissolved gas in it the reduction of pressure as the magma rises causes the gas to bubble out of solution ... events and in phenomena such as hydrothermal explosions (also due to volcanic processes) ...
Minoan Eruption
... to as the Thera eruption or Santorini eruption, was a major catastrophic volcanic eruption with a Volcanic Explosivity Index (VEI) of 6 or 7 and a Dense-rock equivalent (DRE) of 60 km3 (14 ... The eruption was one of the largest volcanic events on Earth in recorded history ...

More definitions of "volcanic":

  • (adj): Explosively unstable.
    Example: "A volcanic temper"
  • (adj): Relating to or produced by or consisting of volcanoes.
    Example: "Volcanic steam"; "volcanic islands such as Iceland"; "a volcanic cone is a conical mountain or hill built up of material from volcanic eruptions"

Famous quotes containing the word volcanic:

    Pity the planet, all joy gone
    from this sweet volcanic cone;
    Robert Lowell (1917–1977)

    Each of us, even the lowliest and most insignificant among us, was uprooted from his innermost existence by the almost constant volcanic upheavals visited upon our European soil and, as one of countless human beings, I can’t claim any special place for myself except that, as an Austrian, a Jew, writer, humanist and pacifist, I have always been precisely in those places where the effects of the thrusts were most violent.
    Stefan Zweig (18811942)