-
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...
-
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)...
- -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...
- The
volcanic winter of 536 was the most
severe and
protracted episode of
climatic cooling in the
Northern Hemisphere in the last 2,000 years. The volcanic...
- 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...
- 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...
-
Volcanic gl**** is the
amorphous (uncrystallized)
product of
rapidly cooling magma. Like all
types of gl****, it is a
state of
matter intermediate between...
-
Volcanic cones are
among the
simplest volcanic landforms. They are
built by
ejecta from a
volcanic vent,
piling up
around the vent in the
shape of a cone...
