Now the restriction of active volcanoes to those zones of the earth’s surface within which mountains are rising, and where in consequence earthquakes are felt, has furnished us at least a clew to the origin of the lava.
Map showing the location of the belts of active volcanoes.
The fact of greatest significance in the distribution seems to be that bands of active volcanoes are to be found wherever mountain ranges are paralleled by deeps on the neighboring ocean floor (Fig.
If the universally-diffused terrestrial heat be the cause of thermal springs, as of active volcanoes, the rocks can only exert an influence by the different capacities p 222 for heat and by their conducting powers.
Some 3,000 Carib Indians still living on Dominica are the only pre-Columbian population remaining in the eastern Caribbean.
According to this authority, there are something in the neighborhood of 300 active volcanoeson the earth.
It is for this reason that fumaroles are only found around the craters of active volcanoes, or on the lines of cracks or crevices of the lava stream where the temperature is very high.
Loa and Kilauea are the only active volcanoes, and are in frequent eruption.
In the West Indies there are six active volcanoes; and three submarine volcanoes have been recorded within the limits of the Atlantic Ocean.
The number of active volcanoes on this Atlantic band and its branches, exclusive of those in the West Indies, does not exceed fifty.
It may, indeed, be laid down as a general rule, that the mineral substances dissolved in hot springs agree very closely with those which are disengaged in a gaseous form from the craters of active volcanoes.
All geologists who reflect on subterranean movements now going on, and the eruptions of active volcanoes, are convinced that great changes are now continually in progress in the interior of the earth's crust far out of sight.
Relation of trappean Rocks to the Products of active Volcanoes.
These cones are composed moreover of lava, sand, and ashes, similar to those of active volcanoes.
After World War II, a long period of Peronist authoritarian rule and interference in subsequent governments was followed by a military junta that took power in 1976.
Despite movement toward democratic reform, political power remains firmly in the hands of an ethnic oligarchy.
Plans are underway to introduce a new national currency.
The formal economy has grown an average of about 3% over the past five years.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "active volcanoes" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
