volcanic activity

As a result, there was a great deal of volcanic activity.

The region shows much evidence of volcanic activity in the last 5000 years.

This is the part of the island with most recent volcanic activity.

There is no sign of volcanic activity with these events.

The southern end of the island had more volcanic activity than the north.

The age of the most recent volcanic activity is also unknown.

For the past two days the volcanic activity in the north had become more intense.

Volcanic activity at the cone has been known since 1881.

The rock was formed over 1.5 billion years ago by volcanic activity.

It was higher than all its neighbours and free from any volcanic activity.

There is evidence of a decline in volcanic activity over the past few million years.

I've heard similar arguments that it was a volcanic activity.

The volcanic activities have continued since then practically up to this day.

Historical volcanic activity has been recorded since the 16th century.

On earth it was liquid water and heat from the sun or volcanic activity.

Victoria was the scene of much volcanic activity which started 40 million years ago.

What is the current status of volcanic activity at Yellowstone?

During this period north Wales was subject to volcanic activity.

"There was no volcanic activity nearby at the time," he said.

They may think this is some kind of natural volcanic activity."

The current state of alert is Level 3 (changes in volcanic activity).

See www.etnasci.it for the latest information about weather conditions and volcanic activity.

His forge was thought to be the source of volcanic activity.

Mountain building and volcanic activity were ongoing in the same region.

The rocks are over 65 million years old formed by volcanic activity.