The Wonder Book of Volcanoes and EarthquakesHouston, Edwin J. (Edwin James)
Science
The Wonder Book of Volcanoes and Earthquakes
Houston, Edwin J. (Edwin James)
Earthquakes; Volcanoes
at rest, and it was not until they had come up to them and handled
them that they could detect their mistake." Mr. Dibble adds: "A blast
of sulphurous gas, a shower of heated embers, or a volume of heated
steam would sufficiently account for this sudden death. Some of the
narrators who saw the corpses, affirm that though in no place deeply
burnt, yet they were thoroughly scorched." As you will see in Chapter
XI, this sudden and awful death due to highly heated air and dust
particles, caused even a greater loss of life in the catastrophic
eruption of Pelée, in Martinique on May 8, 1902.
By reason of its situation at a lower level on the slopes of Mt. Loa,
Kilauea was at one time thought to be one of the craters lower down
on the slopes of Loa. This was the opinion of Professor Dana when he
examined the district in 1840. Since this time the region has been
more carefully studied, and Mt. Loa and Kilauea, are now generally
regarded as separate and independent volcanoes, neither of which acts
as a safety valve for the other.
We shall not attempt in this chapter to say anything concerning the
sources or places from where these great supplies of lava have been
drawn. This will be left to some subsequent chapter, after we have
described still other volcanoes.
The outlines of mountains like Mt. Loa or Kilauea differ greatly from
mountains like Vesuvius; their slopes, like the slopes of all other
Hawaii volcanoes, have an inclination which does not exceed 10°.
The lava streams, therefore, as they flow down the mountains, move
more slowly than they would were the slopes more precipitous, as in
mountains like Vesuvius.
There have been many eruptions of Kilauea. That which occurred in the
year 1840, was of great magnitude (see map, Fig. 6), and began in a
fissure southwest of the crater. The principal eruption, however,
broke out about twelve miles from the sea coast, and about twenty-five
miles east of Kilauea. Here an enormous mass of lava forming a stream
nearly three miles wide reached the ocean at Nanawale.
Public-domain text, read in full here on John Shaqi.
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