I don't know how you can tell on your planet when quakes or vulcanism are going to start, machines maybe.
First Har Palo with his theory that the vulcanism is so close to the surface that the ground keeps warm and the crops grow so well.
The vibratory movements of seismism probably result from both deformation and vulcanism under certain conditions.
The Azores Plateau or bulge is generally considered as a highly fractured tectonic uplift in which vulcanism has played a comparatively small part (Cloos, 1939).
From this, it seems safe to conclude that the period of vulcanism was so prolonged that great changes in the unburied relief were effected by the agents of erosion.
Thus, vulcanismnot only broadened the Andes and increased their height, but also moved the continental divide still nearer the west coast.
Not all the striking effects of vulcanism belong to the remote geologic past.
The forces of vulcanism are at last relatively quiet.
Closely related to this phase of vulcanism is the injection of molten material into the earth's crust from below, so as to force its way between stratified beds and produce intruded sheets.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "vulcanism" in a variety of sentences. We hope that you will now be able to make sentences using this word.
