But the tuffs and gravels in which the Elephas meridionalis are embedded were synchronous with an older epoch of volcanic action, to which the cone of St. Anne, near Le Puy, and many other mountains of M.
We have as yet no proof that Man witnessed the origin of these hills of lava and scoriae of the middle phase of volcanic action.
Volcanic action, in the most general conception of the idea, is the reaction of the interior of a planet on its outer surface.
The hot springs which abound in the island are impregnated with sulphureted hydrogen and carbonic acid gases, appearing to attest the existence of volcanic action.
Certainly his theories do not hold good either in Australasia or America where gold is often, nay, more usually, found at, or near, either present or past regions of volcanic action.
It resembles the latter also in the greatness and irregularity of its depths, and in the evidence which its islands supply of volcanic action as well as of very considerable crustal movements within recent geological times.
The period, it may be added, was marked by the appearance of volcanic action in Scotland and Germany.
Volcanic action, which had been remarkably absent in eastern North America during Paleozoic times, was well-marked in connection with the warping now in progress.
From the middle Tertiary on, Asia Minor, Arabia, and Persia were the scenes of volcanic action.
They are among the most permanent records of volcanic action, far outlasting the greatest volcanic mountains built in open air.
The thickness of rock between the surface of Chile and the subterranean foci of volcanic action may be many miles or leagues deep.
Turning to the table of volcanic action, and of earthquakes, found in the Report of the British Association for 1854, we find that year was remarkable for earthquakes in the United States and South America.
The West India islands are of volcanic origin, and the influence of volcanic action is not confined to a concussion of the earth, or the eruption of mud and lava.
The tendency to volcanic action is not as great at the autumnal, as at the vernal equinox, for the reason that most of the volcanic action of the western hemisphere develops itself now upon South rather than North America.
The catacombs of Rome are excavated in lava, and Tuscany contains strong evidences of volcanic action.
Greece and the Grecian Archipelago have been, almost within historic times, the seat of a volcanic action, of great extent and violence, and which has not wholly exhausted itself.
When examining the agates, the chalcedonic and jaspery rocks, some of the limestones, and even the bright red sandstones, I was forcibly struck with their resemblance to deposits formed in the neighbourhood of volcanic action.
This conclusion might, perhaps, even have been anticipated, from the general rarity of volcanic action, except near the sea or large bodies of water.
Cruz, in the vast deluges of basaltic lava: at this same tertiary period, also, there is distinct evidence of volcanic action in Western Banda Oriental.
Denudation is, in a great measure, dependent on volcanic action.
The Elevation of Mountains is another result of volcanic action.
All are due to volcanic action, quite recent in geological time; and a similar origin belongs to the minor shapes which stud the country like bubbles upon a cooling body.
It is due to volcanic action, and covers a respectable area; its sides and summits are overgrown with grass.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "volcanic action" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
