First Zone. This includes the vast array of mountain chains, peninsulas, and bands of islands which encircle the Pacific Ocean with a belt of burning mountains. Within it occur, in the New World: (1) the Andes mountains, with three of the most remarkable series of volcanoes—those of Chili, Bolivia, and Ecuador—separated by hundreds of miles; (2) the volcanic group of Central America; (3) the series of Mexico; (4) the series of the Sierra Nevada and Cascade mountains; (5) the group of Alaska; and (6) the long series of the Aleutian Islands.

In the Old World are: (1) the series of Kamchatka and the Kurile Islands; (2) the group of Japan; (3) the series south of Japan, including Formosa, the Philippine and the Molucca Islands; and (4) the Australian series, including New Guinea, New Britain, New Hebrides, and New Zealand. In this vast zone there are not less than four hundred volcanoes, one hundred and seventy of which are still active.

Second Zone. This contains the belt of broken lands and inland seas, which extending round the globe, separates the northern from the southern continents, and intersects the first zone, in the equatorial regions, nearly at right angles.

In it are: (1) the volcanic regions of Central America and Mexico, and the series of the Lesser Antilles; (2) the groups of the Azores and Canary islands (3) the Mediterranean islands and peninsulas, including all the active volcanoes of Europe; (4) Asia Minor with numerous extinct volcanoes; (5) the shores of the Red Sea and Persian Gulf, and the two Indias, rich in traces of volcanic action; (6) the East Indian Archipelago with hundreds of burning mountains; and (7) the Friendly Islands and other volcanic groups of the central Pacific.

In this zone there are no less than one hundred and sixty volcanoes, so that the two volcanic zones together contain five hundred and sixty, or five-sixths of all known.

Isolated Volcanoes. The volcanoes not included in these two great zones are isolated, in the midst of the oceans, or in the broken polar lands. The most noted are the Hawaiian Island group, in the Pacific; Bourbon and Mauritius, in the Indian Ocean; Cape Verde Islands, Ascension, St. Helena, and Tristan da Cunha, in the Atlantic; Iceland and Jan Mayen, in the Arctic Ocean; and Erebus and Terror, in Antarctic.

MOST NOTED VOLCANOES

NameLocationHeight
(feet)
AltarEcuador17,710
AntisanaEcuador19,335
AsosanJapan5,630
CayambiEcuador19,255
ChimborazoEcuador21,424
CopiapoChile19,700
CotocachiEcuador16,300
CotopaxiEcuador18,880
DemavendPersia18,500
EtnaSicily9,652
FujiyamaJapan12,390
HeclaIceland5,110
Hood, Mt.Oregon11,225
IztaccihuatiMexico16,076
Kirishima-yamaJapan5,530
LlullaillacChile21,000
MaipoChile17,670
Mauna KeaHawaii13,953
Mauna LoaHawaii13,600
MistiPeru20,015
Nevado de ColimaMexico14,210
OrizabaMexico18,310
PeléeMartinique, W. I.4,300
PichinchaEcuador15,918
Pico, Peak ofAzores7,013
PopocatepetlMexico17,748
RuizColombia17,388
SahamaPeru23,000
SangaiEcuador17,459
San JoseChile20,020
St. Elias, Mt.Alaska18,024
St. Helena, Mt.United States10,000
StromboliLipari Islands3,090
Tahiti, Peak ofFriendly Islands7,400
TeneriffeCanary Islands12,000
TolimaColumbia18,069
TolucoMexico14,950
TunguraguaEcuador16,690
VesuviusItaly4,260
EARTHQUAKES

Earthquakes are movements of the earth’s crust, varying in intensity from a slight tremor or shaking of the ground to the most violent convulsions causing enormous destruction over wide areas.