It was an era of extensive volcanism, which released large amounts of sulphur dioxide (SO) into the atmosphere.

The ground shows evidence of extensive volcanism, and the sulfur in the atmosphere may indicate there have been some recent eruptions.

Twenty million years ago, crustal extension associated with the Basin and Range Province caused extensive volcanism in the Sierra.

Mount Unzen is part of Shimabara Peninsula, which has seen extensive volcanism over thousands of years.

There was an area of extensive volcanism in central and southwestern Victoria, where there are numerous extinct volcanoes and volcanic lakes.

Io's colorful appearance is the result of various materials produced by its extensive volcanism.

Despite the extensive volcanism that gives Io its distinctive appearance, nearly all its mountains are tectonic structures, and are not produced by volcanoes.

In the late Cenozoic, extensive volcanism occurred east of the park area.

Shandong has hence experienced extensive volcanism in the Tertiary.

Siberia moved southwards and joined with Kazakhstania, a small continental region believed today to have been created during the Silurian by extensive volcanism.