-
crust of a planetary-m**** object, such as Earth, that
allows hot lava,
volcanic ash, and
gases to
escape from a
magma chamber below the surface. The process...
-
Several types of
volcanic eruptions—during
which material is
expelled from a
volcanic vent or fissure—have been
distinguished by volcanologists. These...
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Volcanic rocks (often
shortened to
volcanics in
scientific contexts) are
rocks formed from lava
erupted from a volcano. Like all rock types, the concept...
-
Volcanic ash
consists of
fragments of rock,
mineral crystals, and
volcanic gl****,
produced during volcanic eruptions and
measuring less than 2 mm (0.079 inches)...
- A
volcanic plug, also
called a
volcanic neck or lava neck, is a
volcanic object created when
magma hardens within a vent on an
active volcano. When present...
- (VABs) are the
official source of
warnings and
alerts including current Volcanic Alert Level (VAL),
intended to
inform stakeholder agencies, authorities...
- -105.5544 The
Thirtynine Mile
volcanic area, part of the
larger Central Colorado volcanic field, is an
extinct volcanic area
located in Park and Teller...
-
Volcanic plume or
volcanic plume may
refer to:
Eruption plume, a
column of hot
volcanic ash and gas
emitted into the
atmosphere during an
explosive volcanic...
- The
volcanic explosivity index (VEI) is a
scale used to
measure the size of
explosive volcanic eruptions. It was
devised by
Christopher G.
Newhall of the...
- The
Volcanic Repeating Arms
Company was an
American company formed in 1855 by
partners Horace Smith and
Daniel B.
Wesson to
develop Walter Hunt's Rocket...