Pyroclastic flow

There are many volcanoes that are part of the Ring of Fire, and Krakatoa is one of them. Krakatoa is an active volcano located on an island, Rakata, in the Sunda Strait, Indonesia. The Sunda Strait is a body of water in between two islands, Java and Sumatra. The volcano is along the tectonic plates of the Indian-Australian and Eurasian, this area is known for its high activity of earthquakes and volcanoes. Krakatoa has erupted ten times within the last couple centuries and last erupted in…

which destroyed a massive area of land (Lindsey). 2 Eruption Background Information The 1980 eruption resulted in thick layers of ash, mud, and pumice being deposited by the initial blast and pyroclastic flow…

To all of my grandchildren living with your parents, I am writing to you to inform you on how the world use to be like back when I was your age. There were both good and bad things going on, often or not they were bad. The world was not what it is like today and when I am gone I hope you never live through what I had to. The constant threat of terrorist attacks and nuclear war looming over us. Even the good still overweighed the bad in some ways. Where the world still suffered we had our ups and…

Mt. Tambora was the largest volcanic eruption in recorded history. This eruption occurred on April 5th, 1815. It was Mt. Tambora, Sumbawa Island, Indonesia (Evans, 2002, p. 1). Volcanos are very tragic natural disasters, and they can cause tons of damage to nearby places. Everyone should make sure that they know how to stay safe during, before, and after the volcano. To begin, many events occur before a volcano erupts. Earthquakes lead up to an eruption, the key reason they occur is magma…

formed over a subduction zone created by the convergence of the African and Eurasian plates (Ball, 2016). Vesuvius is classed as a stratovolcano because its eruptions are typically explosive and violent in nature, and are accompanied by pyroclastic flows. These flows contain a high-density mix of hot lava blocks, pumice, ash and volcanic gas. They move at very high speed down volcanic slopes and destroy everything in their path. Vesuvius has experienced eight major eruptions in the last 17,000…

tend to create what we know as a super-eruption. ‘Super-eruption’ is “is an informal term referring to volcanic events in which at least 300 km3 of magma are explosively evacuated from a subsurface magma chamber deposited on the countryside as pyroclastic (i.e. fire-fragmental) materials—ash, pumice and rock fragments” (Lowenstern, 2006). When all of these materials come out rapidly it causes the ground that is over the magma chamber to collapse inward creating a volcanic caldera that can span…

EES: 1030: 0B06 12/6/17 Toba, the Deadliest Volcano Eruption Around 74,000 years ago during the Quaternary period, the supervolcano known as, Toba, erupted in Northern Sumatra, Indonesia. Toba is thought to be one of the largest known eruptions the Earth has ever seen. And certainly the largest to erupt during the Quaternary period. Out of the three periods that make up the Cenozoic Era, the Quaternary period is the current and most recent of the three. The eruption of the Toba volcano did not…

In Hawaii, “steep slopes, combined with flow of ground and surface water and frequent seismic episodes, create a setting prone to mass wasting by processes such as landsliding, mud flows, or slope creep” (Thornberry,10). It is important to note that “the island of Hawaii is the most seismically active place in the United States with thousands of detectable tremors…

Mount St. Helens is an 8,363-ft. tall volcanic landmark of the state of Washington. It was a popular tourist attraction and recreation area for most of the 20th century. It was also The U.S.’s 8th tallest mountain, towering at 9,977 ft. It is now the 14th tallest at 8,363 ft. tall, due to a major eruption in May of 1980. On May 18, 1980, the beautiful, peaceful well-known mountain Mount St. Helens became the most dangerous mountain in U.S. history in a matter of minutes. There are records of…

small individual of the population. Mutation could have come from a genetic abnormality and with a small number of hominins on the island, the mutation could have become the normal for the population due to genetic drift or the founder effect. Genetic flow could account for more than size. The sharing of genetic material between Australopithecus and H. erectus could clarify the body shape of the Australopithecus and the head shape of the H. erectus. Cut marks on Stegodon bones suggest the tools…