What type of volcano is Mount Hood?

Hood stratovolcanostratovolcano—a typically cone-shaped structure formed by layered lava flows and explosive eruption deposits—hosts twelve mapped glaciers along its upper flanks.

Is Mount Hood a shield volcano?

While the Mount Hood edifice was growing, regional volcanoes of chiefly basalt and basaltic andesite lava flows formed. Mount Defiance (about 500,000 years old) on the south side of the Columbia River gorge and Lost Lake Butte northwest of Mount Hood are two examples of shield volcanoes.

Is Mount Hood considered an active volcano?

Mount Hood remains an active volcano — meaning that it will erupt again. And when it does, it could unleash mudflows not unlike those from Colombia’s Nevado del Ruiz volcano in 1985. There, a mudflow entombed the town of Armero, killing roughly 21,000 people in the dead of night.

Why is Mount Hood a composite volcano?

Mount Hood is a stratovolcano made of lava flows, domes, and volcaniclastic deposits. Most of the volcano is andesite composition. The main cone of Mount Hood formed about 500,000 years ago. In the last 15,000 years the volcano has had four eruptive periods.

What type of volcano is Mt Hood and Mt Rainier?

Composite Volcanoes (Stratovolcanoes)

Composite volcanoes are made up of both lava flows and pyroclastic deposits and usually experience multiple eruptions over long periods of time. Mount Rainier is a composite volcano.

Where is Mount Hood volcano?

Mount Hood is Oregon’s highest peak and an active volcano of the Cascade Range. It is located about 80 km (50 mi) east of the Portland metropolitan area. Volcanism occurs at Mount Hood and other Cascades arc volcanoes because of the subduction of the Juan de Fuca Plate off the western coast of North America.

What kind of rock is Mt Hood?

andesitic magma

The rocks around Mount Hood, scientists say, are almost exclusively formed from andesitic magma. And research suggests that the recharge of mafic magma to mix with its thicker felsic counterpart often occurs just prior to an actual eruption.

What kind of volcano is Anak Krakatoa?

On December 29, 1927, Anak Krakatoa emerged from the caldera formed in 1883 by the explosive volcanic eruption that destroyed the island of Krakatoa.

What type of volcano is SP Crater?

cinder cone

SP Crater, 40 km (25 mi) north of Flagstaff, is an excellent example of a cinder cone, and its associated lava flow extends for 7 km (4.3 mi) to the north of the cone.

Is Mount Hood a composite shield or cinder cone volcano?

Some of the most conspicuous and beautiful mountains in the world are composite volcanoes, including Mount Fuji in Japan, Mount Cotopaxi in Ecuador, Mount Shasta in California, Mount Hood in Oregon, and Mount St. Helens and Mount Rainier in Washington.

What are the examples of composite volcano?

Famous examples of composite cones are Mayon Volcano, Philippines, Mount Fuji in Japan, and Mount Rainier, Washington, U.S.A. Some composite volcanoes attain two to three thousand meters in height above their bases. Most composite volcanoes occur in chains and are separated by several tens of kilometers.

How do composite shield and cinder cone volcanoes differ?

Composite cones are tall, cone shaped volcanoes that produce explosive eruptions. Shield volcanoes form very large, gently sloped volcanoes with a wide base. Cinder cones are the smallest volcanic landform. They are formed from accumulation of many small fragments of ejected material.

What are the 3 types of volcano?

The Three Classic Types of Volcanoes

• Cinder Cone Volcanoes.
• Composite Volcanoes (Stratovolcanoes)
• Shield Volcanoes.

What type of volcano is Mount Saint Helens?

stratovolcano

Mount St. Helens is a stratovolcano, a steep-sided volcano located in the Pacific Northwest region of the United States in the state of Washington.

What type of volcano is Mount Mayon?

stratovolcano

Mayon, located in the Philippines, is a highly active stratovolcano with recorded historical eruptions dating back to 1616. The most recent eruptive episode began in early January 2018 that consisted of phreatic explosions, steam-and-ash plumes, lava fountaining, and pyroclastic flows (BGVN 43:04).

What are the 5 main volcanoes?

Let’s take a look at the world’s most active volcanoes and where these volcanoes are located.

• Mauna Loa – Hawaii. Source: R.W. Decker/Wikimedia Commons. …
• Eyjafjallajokull – Iceland. …
• Mount Vesuvius – Italy. …
• Mount Nyiragongo – Congo. …
• Taal Volcano – Philippines. …
• Mount Merapi – Indonesia. …
• Galeras – Colombia. …
• Sakurajima – Japan.

What type of volcano is Mount Etna?

Etna has several layers of solidified lava, ash and pumice on its slopes and changes height periodically, following an eruption. Etna is a type of volcano known as a stratovolcano. Other stratovolcanoes include Vesuvius and Krakatoa.

What type of volcano is Mount Tambora?

Tambora stratovolcano

The massive Tambora stratovolcano forms the entire 60-km-wide Sanggar Peninsula on northern Sumbawa Island. The largely trachybasaltic-to-trachyandesitic volcano grew to about 4,000 m elevation before forming a caldera more than 43,000 years ago.

Is Mount Everest a volcano?

Mount Everest is a volcano located in the Himalayas. It is the highest mountain on Earth, and is also the world’s highest mountain peak. Mount Everest is classified as a stratovolcano, meaning that it is composed of alternating layers of ash and lava.

Is Mt Kilimanjaro a volcano?

Kilimanjaro has three volcanic cones, Mawenzi, Shira and Kibo. Mawenzi and Shira are extinct but Kibo, the highest peak, is dormant and could erupt again. The most recent activity was about 200 years ago; the last major eruption was 360,000 years ago. 8.

What type of volcano is Smith volcano?

symmetrical cinder cone

Smith Volcano is a well preserved symmetrical cinder cone. The 1831 eruption of Babuyon Claro was the largest (VEI=4) and caused damage. The most recent eruption was in 1924 at Smith Volcano.

Is Yellowstone volcano eruption?

The Yellowstone caldera was created by a massive volcanic eruption approximately 631,000 years ago. Later lava flows filled in much of the caldera, now it is 30 x 45 miles. Its rim can best be seen from the Washburn Hot Springs overlook, south of Dunraven Pass.

What happens if Yosemite erupts?

If the supervolcano underneath Yellowstone National Park ever had another massive eruption, it could spew ash for thousands of miles across the United States, damaging buildings, smothering crops, and shutting down power plants. It’d be a huge disaster.

What will happen if Mt Rainier erupts?

Mount Rainier’s next eruption might be of similar or larger size and could produce volcanic ash, lava flows, and avalanches of intensely hot rock and volcanic gases, called “pyroclastic flows.”

Would Mt. Rainier destroy Seattle?

Mt. Rainier would be able to produce the same if not more tephra. The largest threat tephra imposes is the potential to contaminate Seattle’s drinking water, and maybe cave in a few roofs. Mt Rainier has the potential to inflict some serious damage but Seattle may be just far enough from its reach.

Is lahar a lava?

A lahar is a hot or cold mixture of water and rock fragments that flow quickly down the slopes of a volcano. They move up to 40 miles per hour through valleys and stream channels, extending more than 50 miles from the volcano. Lahars can be extremely destructive and are more deadly than lava flows.