Each volcanic event distributed ash with a unique set of properties (shape and color of particles, chemical signature).

Volcanic cones are among the simplest volcanic landforms.

A third type of volcanic oceanic island is formed over volcanic hotspots.

Trenches are generally parallel to a volcanic island arc, and about from a volcanic arc.

A volcanic field is an area of the Earth's crust that is prone to localized volcanic activity.

There's volcanic ash in the atmosphere.

The Lake Nyos disaster resulted from a volcanic event, which very suddenly released as much as a cubic kilometre of gas from a pool of naturally occurring under the lake in a deep narrow valley.

A volcanic cone is found in the jungle.

Nyos is a deep lake high on the flank of an inactive volcano in the Oku volcanic plain along the Cameroon line of volcanic activity.

For example, volcanoes in Mexico and western North America are mostly in volcanic belts, such as the Trans Mexican Volcanic Belt that extends 900 km from west to east across central southern Mexico and the Northern Cordilleran Volcanic Province in western Canada.

The volcanic islands tend to be younger, the more westward.

The gas phase is extremely important in propelling volcanic eruptions.

The volcanic arc on the upper plate is slowly extinguished.

The mountain is part of the area of volcanic activity known as the Cameroon Volcanic Line, which also includes Lake Nyos, the site of a disaster in 1986.

This is closely related to tectonic and volcanic activity of planets.

Out of the abovementioned peaks, only Kazbek is of volcanic origin.

Due to the volcanic nature of the islands, mineral deposits are abundant.

A number of volcanic islands rise from the center of the sea.

By the end of the Late Ordovician these volcanic emissions had stopped.

When first erupted from a volcanic vent, lava is a liquid at temperatures from .

Most of this salt was released from volcanic activity or extracted from cool igneous rocks.

The only volcanic complex of this size on Earth is the Big Island of Hawaii.

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The islands of Japan are located in a volcanic zone on the Pacific Ring of Fire.

Hydraulic mortar was not available in ancient China, possibly due to a lack of volcanic ash.

It is an area mostly composed of igneous rock which relates to its long volcanic history.

Many of these are composed of volcanoes, and can thus be further classified as volcanic island arcs.

Volcanic gases include a variety of substances given off by active (or, at times, by dormant) volcanoes.

Water vapor is consistently the most common volcanic gas, normally comprising more than 60 of total emissions.

Noting the continuing efforts of the administering Power to deal with the consequences of the volcanic eruption,

The country is also vulnerable to natural disasters and had water contamination problems following recent volcanic activity.

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