Eruptions sentence example
Volcanic eruptions have been observed.
Several eruptions are recorded in Roman times.
During the Tertiary period the great volcanoes of the Andes were formed, and there were smaller eruptions in the Sierras.
The first eruptions piled up huge domes of lavas rich in soda, including the geburite-dacites and sOlvsbergites of Mount Macedon in Victoria, and the kenyte and tephrite domes of Dunedin, in New Zealand.
The first recorded eruption of Mauna Loa was in 1832; since then there have been eruptions in 1851, 1852, 1855, 1859, 1868, 1880-1881, 1887, 1896,1899 and 1907.Advertisement
The eruptions of 1868, 1887 and 1907 were attended by earthquakes; in 1868 huge sea waves, 40 ft.
Human sacrifices were slain on several occasions, and vast offerings presented to the spirits supposed to preside over the volcanoes, especially during the periods of actual eruptions.
The body was ultimately removed by the inhabitants of Naples to that city, where the relic became very famous for its miracles, especially in counteracting the more dangerous eruptions of Vesuvius.
After the destruction of one forest by volcanic eruptions another grew over it; it, too, was buried under volcanic material, and the process was repeated several times.
In China, at the close of the period, there were enormous eruptions of melaphyre, porphyrite and quartz-porphyry.Advertisement
At the close of the Eocene period great eruptions of augite-andesite took place from two fissures which ran along the west coast.
Thucydides mentions eruptions in the 8th and 5th centuries B.C., and others are mentioned by Livy in 125, 121 and 43 B.C. Catania was overwhelmed in 1169, and many other serious eruptions are recorded, notably in 1669, 1830, 1852, 1865, 1879, 1886, 1892, 1899 and March 1910.
The earliest eruptions of Etna are older than the Glacial period in Central and Northern Europe.
There have been five eruptions of Pichincha since the Spanish conquest - in 1539, 1566, 1575, 1587 and 1660.
The eruptions were connected with innumerable fissures up which the basalt rose and from numerous points on which it flowed out at the surface.Advertisement
That the volcanic period was a prolonged one is shown by the great denudation of the plateaus before the last eruptions took place.
Great damage was done by the eruptions of 1737 and 1794; the earthquake of 1857 and the eruption of the 8th of December 1861 were even more destructive.
The Imbabura volcano, celebrated for its destructive eruptions of mud and water, stands midway between the two ranges at the northern end of the plateau, and belongs to the transverse ridge of knot (nudo) which unites them.
Ibarra on the northern flanks of the volcano has suffered severely from its eruptions.
The name is derived from imba, fish, and bura, mother, and is said to have originated from the quantities of a fish called " prenadilla " (Pimelodus cyclopum) discharged from its crater during one of its eruptions - a phenomenon which, after a searching investigation, was discredited by Wagner.Advertisement
There is a tradition that this mountain was once higher than Chimborazo, but a series of eruptions caused the cone to fall in and reduced its summit to its present altitude and broken appearance.
Its eruptions are not on a grand scale, but small outbursts of lava and explosions of steam occur at frequent intervals, and at longer intervals more violent explosions in which the molten rock is thrown 2000 ft.
Perhaps no Ecuadorean volcano is better known than Pichincha, the " boiling mountain," because of its destructive eruptions and its proximity to the city of Quito.
Its fame rests on Humboldt's publication of the tradition that great numbers of this tiny fish had been thrown out during the eruptions of Imbabura and other volcanoes.
Mr Whymper's explanation of the phenomenon is that the fish are scattered over the land by the sudden overflow during volcanic eruptions of the rivers and lakes which they inhabit.Advertisement
Through these, again, pierce other granites in dikes or lava flows, and overlying the whole are limestones of Cretaceous and Tertiary age, themselves cut through by later volcanic eruptions.
The end of the Cretaceous period saw the beginning of a series of great earth movements ushered in by volcanic eruptions on a scale such as the earth has never since witnessed, which resulted in the upheaval of the Himalayas by a process of crushing and folding of the sedimentary rocks till marine fossils were forced to an altitude of 20,000 ft.
In Luzon trachytic tuffs are sometimes interstratified with nummulitic limestone, thus showing that the eruptions had already begun in the Eocene period.
Only a few eruptions have been recorded of any of these, however, except Taal and Mayon, and there has been no great eruption of Taal since 1754.
But there were 26 eruptions of Mayon in the 19th century, and those of 1814 and 1897 were of great violence.
On the 10th of January 1835 Coseguina was the scene of one of the most tremendous eruptions on record.
Tannic acid is largely used in the treatment of various ulcers, sores and moist eruptions.
The Chilean Andes correspond with the Western Cordillera of Bolivia and Peru, and consist almost entirely of Jurassic and Cretaceous beds, together with the products of the Tertiary eruptions.
Frequent destructive eruptions have occurred.
The sea grew shallow, the deposits became conglomeratic and shaly, volcanic eruptions began, and the present folds of the Apennines were initiated.
Both volcanic eruptions and movements of elevation and depression continue to the present day on the shores of the Tyrrhenian Sea.
So far as is known, there have in historic times been eruptions from twenty-five volcanic vents.
The power of the crown was increased by the confiscation of the great Sturlung estates, which were underleased to farmers, while the early falling off of the Norse trade threatened to deprive the island of the means of existence; for the great epidemics and eruptions of the 1.4th century had gravely attacked its pastoral wealth and ruined much of its pasture and fishery.
Smallpox, famine, sheep disease, and the eruptions of 1765 and 1783 follow each other in terrible succession.
The Tertiary eruptions were not confined to this line of hills.
Most of the eruptions took place during the Miocene and Pliocene periods.
The earliest symptoms are slight gastric disorders, loss of appetite and general malaise, followed later by colicky pains, irritation of eyelids and skin eruptions.
In Abyssinia the Ashangi traps are certainly post-Oolitic. In East Africa the fissure eruptions are considered to belong to the Cretaceous.
These early eruptions were followed by those of Kenya, Mawenzi, Elgon, Chibcharagnani, and these by the eruptions of Kibo, Longonot, Suswa and the Kyulu Mountains.
The connexion of this system with that of the Rocky Mountains, which has been pointed out by many writers, has received much support from the discovery of the extensive eruptions of granite during Tertiary times, extending from the southern extremity of South America to Alaska.
The highest peaks in the latter section are volcanic and their eruptions have sensibly modified the character of the primitive ridges.
Eruptions still take place at intervals, but the volcanoes for the most part seem to have reached the solfataric stage.
Most eruptions are relatively gentle, sending lava flows downslope from fountains a few meters to a few hundred meters high.
Natural production of dusts include ash from volcanic eruptions or forest fires, sea salt particles or Saharan dust.
Let your party guests take turns adding a bit of solution to the can to cause further eruptions.
Genner V and Bonnevie P (1938) Eczematous eruptions produced by leaves of trees and bushes.
Stock forced to graze on heavily infested pastures may suffer skin eruptions about the mouth.
Part of the volcano is formed by gentle lava flows and part by explosive ash eruptions.
In these animals, in certain inflammatory skin eruptions, caused by the ingestion of harmful plants, the albinotic areas are alone affected.
It is the accretion of countless eruptions from over twenty volcanoes, and covers an area of 1300 sq.m.
Some of the earliest work applying statistical methods in volcanology involved looking at the expected repose interval between volcanic eruptions.
More frequent eruptions of basalt and rhyolite lava flows have occurred before and after the large caldera-forming events.
It is hoped that the seismic data will also allow us to distinguish between submarine volcanic eruptions and earthquakes occurring along subduction fault lines.
In comparing discontinuous data, we will perform spatial superposed epoch analyzes, particularly assessing the influence of volcanic eruptions.
On your way, look down at the surrounding landscape molded by ancient volcanic eruptions.
Melting glaciers may lead to an increase in volcanic eruptions, earthquakes, and tsunamis.
Burdock root treats skin eruptions, and is intended to minimize the lesions associated with the herpes virus.
You can see a show, visit M&M World, catch free volcano eruptions at the Mirage, and more.
Food allergies frequently cause skin eruptions.
The most important thing to remember is to be prepared well in advance of any possible eruptions.
Herpes zoster virus-Acute inflammatory virus that attacks the nerve cells on the root of each spinal nerve with skin eruptions along a sensory nerve ending.
Eruptions of the permanent teeth are usually much less distressing, although the eruption of the first four broad permanent molars may cause discomfort.
Raised eruptions usually form the circular pattern that gives the condition its name.
Repeated bites can lead to generalized skin eruptions or inflammation.
Healthcare workers are especially at risk for hand eruptions due to latex glove use.
John Cusak, Woody Harrelson, and Amanda Peet must contend with disasters like volcanic eruptions, bad hurricanes, and other weather-related events.
The West Coast of America will be destroyed by a series of earthquakes, volcanic eruptions, and the rising of the ocean due to polar ice caps melting.
Part of Clennell's presentation included the suggestion that eruptions of these methane hydrates could actually reduce the density of ocean water enough to sink entire ships.
Natural disasters occur everywhere, from floods in the Midwest, tornadoes in the central belt, earthquakes in California, to volcanic eruptions in the Pacific Northwest.
Reduce the appearance of eruptions on your skin with fast home remedies for acne and blemishes.
Being vigilant with your skin care and following a daily regimen will usually deter skin eruptions and other irritations.
There is no cure for rosacea, which is a skin condition characterized redness, irritation, and eruptions.
In France, as in Great Britain, volcanic eruptions occurred during several of the Palaeozoic periods, but during the Mesozoic era the // /
The most remarkable feature in the geology of Elba is the extent of the granitic and ophiolitic eruptions of the Tertiary period.
From 1845 to 1857 volcanic eruptions were very violent, and islands once fertile were devastated and nearly destroyed.
With the J urassic beds is associated an extensive series of eruptive rocks (gabbro, peridotite, serpentine, diorite, granite, &c.); they are chiefly of Jurassic age, but the eruptions may have continued into the Lower Cretaceous.
The date of these eruptions is still uncertain, but they probably continued to a very recent period.
Leaving out of consideration all evidence of more ancient volcanic activity, each of the three regions, into which, as we have seen, the continent may be divided, has been, during or since the Cretaceous period, the seat of great volcanic eruptions.
In all these cases, however, the eruptions have now almost ceased; and the great volcanoes of the present day lie in the islands off the eastern and south-eastern coasts.
In most cases the eruptions appear to be of Pliocene or later date, but in the extreme north some of the basalt seems to belong to the Miocene period.
There is historic evidence of mud eruptions in some of the volcanic areas.
An effect of the greater tide-generating force will also be instability of the liquid magmas underlying volcanic areas, leading to violent eruptions and earthquakes.
The Eastern Andes is a magnificent range in the southern part of Peru, of Silurian formation, with talcose and clay slates, many quartz veins and eruptions of granitic rocks.
It is nowhere disturbed by volcanic eruptions, except at the very edge of the formation near Lake Titicaca, and in this respect it differs essentially from the Maritime Cordillera.
The height of the mountain varies from time to time within limits of several hundred feet, according to the effects of successive eruptions, but averages about 4000 ft.
Aso-take is still an active volcano, but its eruptions during recent years have been confined to ashes and dust.
Within the period of Japans written history several eruptions are recorded the last having been in 1707, when the whole summit burst into flame, rocks were shattered, ashes fell to a depth of several inches even in Yedo (TOkyO), 60 m.
Eruptions have been recorded since the earliest days of Japanese history.
Some are contained in alluvial depressions in the river valleys; others have been formed by volcanic eruptions, the ejecta damming the rivers until exits were found over cliffs or through gorges.
The igneous rocks occur at several geological horizons, but the great volcanic eruptions did not begin until the Tertiary period.
The depression is marked by a line of volcanoes, including Fuji, and is in part buried beneath the products of their eruptions.
Between the two zones lies a row of Klippen, while towards the Hungarian plain the inner zone is bordered by a fringe of volcanic eruptions of Tertiary age.
The great similarity between the salts of the ocean and the gaseous products of volcanic eruptions at the present time, rich in chlorides and sulphates of all kinds, is a strong argument for the ocean having been salt from the beginning.
The Cainozoic volcanic history of New Zealand begins in the Oligocene, when the high volcanic domes of Dunedin and Banks Peninsula were built up. The Dunedin lavas including tephrites and kenytes correspond to the dacite eruptions in the volcanic history of Victoria.
The volcanic activity of the Taupo district lasted into the Pleistocene, and the last eruptions contributed many of its chief geographical features.'
In other areas, however, there is still volcanic activity, and in many cases volcanoes to which only tradition attributes eruptions can hardly be classified as extinct.
The eruptions are said to have begun with the ejection of syenites, diorites and diabases, which probably took place at the close of the Cretaceous or the beginning of the Eocene period.
In the Miocene period andesites of various kinds were erupted, while at the close of the Pliocene began the great eruptions of basalt which reached their maximum in Quaternary times and continue to the present day.'
The earlier supposition that these vast lava flows came chiefly from fissure eruptions has been made doubtful by the later discovery of flat-sloping volcanic cones from which much lava seems to have been poured out in a very liquid state.
Eruptions are recorded for the years 1830, 1855 and 1858; and another eruption occurred in 1904.
Its surface consists mainly of the gentle slopes of five volcanic mountains which have encroached much upon one another by their eruptions.
In the eruptions of 1823, 1832, 1840 and 1868 the floor of the crater rose on the eve of an eruption and then sank, sometimes hundreds of feet, with the discharge of lava; but since 1868 (in 1879, 1886, 1891, 1894 and 1907; and once, before 1868, in 1855) this action has been confined to Halemaumau and such other pits as at the time existed.
Tremendous forces have been at work, suggesting earthquakes and eruptions; but really all is due to the chemical and mechanical action of water.
Similar eruptions, but on a much smaller scale, took place in other parts of Great Britain.
The presence of these fossils indicates that the eruptions were subaerial, and a comparison of them with those elsewhere found among Older Tertiary strata shows that they probably belong to the Oligocene stage of the Tertiary series of formations, and therefore that the basalt eruptions took place in early Tertiary time.
There were border wars with rebellious savage tribes, attacks made by Chinese pirates seeking plunder or refuge, volcanic eruptions, earthquakes, tornadoes and the periodical visits of marauders from the southern islands.