Sentence examples for volcanic actions from inspiring English sources

Over hundreds of millions of years, such extraordinary volcanic actions have laid the foundation for our natural landscape.

His visit to the Auvergne Mountains in 1802 furthered his gradual conversion to volcanism, the theory that granite and many other rocks are formed by volcanic action.

They have been much affected by volcanic action and glaciation.

Relatively continuous rift-valley fault movements and volcanic action left Olduvai deeply incised.

Evidence of volcanic action can be seen in the explosion craters and small cones.

There he investigated volcanic action and the uplifting, sinking, twisting, and folding of the Earth's crust.

The largest caldera in the world, which contains Lake Toba in Sumatra, was formed through a combination of volcanic action and tectonic activity.

His studies vastly extended knowledge of volcanoes, and his search for combustible material, such as coal, which Werner insisted was necessary for volcanic action, proved fruitless.

It is part of a string of Caribbean islands formed by volcanic action where one of the planet's tectonic plates slides under another.

Volcanic action follows if the outburst of wind and water from the depths is accompanied by fire and brimstone from hell.

The western ranges are intensively folded and are much affected by volcanic action; the central and eastern portions are slightly less folded.