Creation of Oahu by Volcanism

Volcanoes are magnificent formations from an opening in a planet’s crust. They form when magma, volcanic ash, and gases escape from a magma chamber below the surface of the planet. Tectonic plates cover the surface of the planet and are constantly moving. Volcanoes are generally found where these plates converge or diverge. Not only are […]

Shield volcanoes and composite cones

A shield volcano is a broad-based, gently sloping formation, more nearly resembling an overturned bowl than a cone. It is built by a succession of thin, wide-spreading lava flows. In addition, volcanic mountains that have broad profile are filed up through the years by flowing fluid called basaltic lava. In other words, this can be […]

Mount St Helen

Mount St. Helen is a very active volcano classified as a stratovolcano, stratovolcano is basically a tall volcano built up of layer after layer of hard lava, tephra, pumice, and volcanic ash. Mount St. Helens location is in Skamania County in Washington, with coordinates of 46 12’00. 17″N122 11’21. 13″W. Mount St Helen is famous […]

Why Are Some Volcanoes More Hazardous Than Others

There are several reasons that influence volcanic hazards, these include the viscosity of the magma, proximity to population centres, materials that are ejected from the volcano, the magnitude of the eruption and the plate margin that the volcano rests upon. The viscosity of the magma depends on 3 things, the temperature, dissolved gasses and the […]

Mt. Nyiragongo

Mt. Nyiragongo is a very interesting and explosive volcano, even though it isn’t especially world renown. It is on the continent of Africa, near the Uganda and Rwanda border. Though it is near those borders, the volcano is in the Democratic Republic of the Congo. The latitude and longitude of Mt. Nyiragongo is 1. 5167° […]

The Day Before Mayon Volcano Eruption

Mount St Helens the day before the 18 May 1980 eruption Post, north of Mount St. Helens, on the clear Sunday morning of May 18, 1980. Seconds later, Mount Pinatubo is part of a chain of composite volcanoes along the Luzon arc on the west coast of the island (area map). The arc of volcanoes […]

Are Volcanoes a Blessing or a Curse

Volcanoes are mountains, typically conical, where lava comes out from a magma chamber through a crater or a vent. There are two types of volcanoes; Composite and Shield. A composite volcano can be referred to as a cone volcano. These volcanoes have tall narrow cone and a wide base. Their magma chambers contain thick acidic […]

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