The last volcano is called “Mt. Yasur” in Vanuata it is what’s called a stratovolcano and it has been erupting close to 100 years. The dangers of this volcano are real, it is a big risk for tourists. How, you may ask is, because of all the toxic gases and lava flows just to get to the volcano every day. The volcano has already took a couple of lives of tourists, and also a tour guide, because they got to close to the danger zone.
A volcano I an opening in earth's crust, by molten rock and gas.Most of the Earth's volcanoes are located around the Pacific Ring of Fire because that the location of most of the Earth's subduction zones.When lava erupts it is made up of a slush of crystals, liquid, and bubbles. The liquid freezes to form volcanic glass. Chemically lava is made of the elements silicon, oxygen, aluminum, iron, magnesium, calcium, sodium, potassium, phosphorus, and titanium. There are 4 different types of volcanoes.There are Extinct, Dormant, Active and Mud volcanoes. The most popular volcano an Active Volcano.
These volcanoes are built almost entirely of lava. Shield volcanoes are produced by gas and heat from the earth’s ... ... middle of paper ... ...different types of gases start to exit the vent of a volcano, some of these gases can be harmful because they are extremely toxic. Therefore, you can easily find out when a volcanic eruption is about to occur because of the signs or sudden changes that the volcano gives out about weeks or months before it erupts. Throughout the course of history many major volcanic eruptions have occurred. Those volcanic eruptions have caused starvation, tsunamis, ash flows, mud flows, and many diseases.
It destroyed 75% of itself along with many other people living near the coastlines of Australia and India. In 1988, Krakatoa erupted in February, then continued on March 16th on which was reported caused two small lava flows from its new crater, then continued into April, causing frequent explosions to eject small plumes of fire. The last eruption we'll talk about was in 1992. This explosion’s strongest activity point occurred on November 12, when Krakatoa started “shooting” lava-bombs out of its crater onto the north coast and some lava flowed into the sea. While we know volcanoes erupt, how do they erupt?
Introduction: Crater Lake was discovered in 1853 by a few miners from California. After being forgotten, rediscovered and renamed from “Deep Blue Lake” to “Lake Majesty”, Crater Lake finally captured its name by a newspaper editor Jim Sutton. Although Crater Lake was discovered in 1865, it was created over 7,000 years prior to its discovery. Crater Lake was not always Crater Lake either, but was once Mount Mazma, a stratovolcano, which once stood roughly 12,000 feet high. Crater Lake is constructed of different types of volcanic rock, has been a part of different eruptions and has had much activity since it was once Mount Mazma.
A violent history suggests equally as devastating future volcanic activity, underground forces are causing the landscape to change and geysers to become more active. The real question is, if a super volcanic explosion took place, would human life exist as we know it ever again? The history of volcanic activity at Yellowstone starts with its first eruption at Huckleberry Ridge 2.1 million years ago, the leftovers reached as far as Iowa and central Texas. Then 800,000 years later, another eruption took place in Mesa Falls creating Henry Fork Caldera near Park, Montana. The last eruption took place 630,000 years ago, called the Lava Creek eruption, spewing 240 cubic miles of debris, and spreading as far as Louisiana and California.
Mt. St. Helens is famously for its eruption on May 18, 1980, although the mountain had previous eruptions with four different stages and the stages often had similarities including the devastating one in 1980; in addition, the 1980 eruption presented serious havoc that led to a long road of recovery. The first stage known as the Ape Canyon Stage and according to the U.S. Geological survey it was ignited from series of small eruptions that created the birth of the mountain; during this phase these eruptions possibly formed domes and pyroclastic flows. Mt. St. Helens in the Cougar stage formulated lava domes and flows just like the Ape Canyon stage including eruptions that escalated enormous volumes of ash along with pyroclastic flows; furthermore
This is why we need to have volcanologists, if there was some studying the mountain perhaps they could have saved all of those people who died in the mud flows. In Iceland there is literally hundreds of volcanoes underneath the glaciers. At any time a volcano can erupt underneath and melt the ice almost instantly. This would create a glacial run or flood, and in October of 1996 it happened. One of the under glacial volcanoes erupted, this caused a three billion gallon flood of the countryside.
Fissures Small and long cracks on the sides of a volcano. Hot Spot The centre of a volcano that is usually 100 to 200km across and has been going on for tens and millions of years, meaning that there is still a consistent rise of hot mantle material inside the volcano. Lava Lava is basically magma that has arrived to the surface of the earth after a volcanic eruption. This is usually used to describe liquified rock that comes from a
Lava when it cools is the most fertile substance on the planet. Hawaii was formed by a volcano over a hot spot erupting under the water and eventually made its way to the surface. After the volcano reached the surface it kept erupting until the island was formed. It took the volcano, Kauai, millions of years to form the islands. After awhile the volcano and the island slowly drifted off the hot spot.