What type of volcano is Mt Washington?

What type of volcano is Mt Washington?

shield volcano
Mount Washington is an extensively eroded basaltic shield volcano capped by a steep-sided central plug. The central edifice has not been active since the late Pleistocene, but a series of small spatter cones on its NE flank about 4 km from the summit erupted some 1300 years ago.

What plates formed Mount Washington?

Like the rest of the Oregon Cascades, Mount Washington was produced by the subduction of the oceanic Juan de Fuca tectonic plate under the continental North American tectonic plate, forming during the late Pleistocene.

Is Mt Washington NH a volcano?

Mount Washington is an eroded Pleistocene basaltic-andesite shield volcano capped by a steep-sided central plug that is the most prominent landmark between North Sister and Three Fingered Jack volcanoes.

What are the three types of shield volcano?

There are three main types of volcano – composite or strato, shield and dome. Composite volcanoes, sometimes known as strato volcanoes, are steep sided cones formed from layers of ash and [lava] flows. The eruptions from these volcanoes may be a pyroclastic flow rather than a flow of lava.

Is Mt Rainier a shield volcano?

Mount Rainier is an episodically active composite volcano, also called a stratovolcano.

Can shield volcanoes erupt?

Eruptions at shield volcanoes are only explosive if water somehow gets into the vent, otherwise they are characterized by low-explosivity fountaining that forms cinder cones and spatter cones at the vent, however, 90% of the volcano is lava rather than pyroclastic material.

Did Mount St Helens have lava?

Helens. Lava flows from Mount St. However, two basalt flows erupted about 1,700 years ago extended about 10 mi (16 km) from the summit; one of them contains the Ape Cave lava tube. …

Has anyone died driving up Mount Washington?

Over more than150 years, there have been three fatalities on the Auto Road. In 1880, a stage overturned (in the hands of a drunk driver), and a passenger was killed.

Why is the weather on Mt. Washington so bad?

At 6,288 feet, Mt. Washington is the highest point in a region known for its weather extremes. New England’s geography helps create huge temperature variations because arctic air in the cool season can come in contact with air warmed by the Atlantic Ocean. Washington is exposed to every New England weather extreme.

What do shield volcanoes look like?

Shield volcanoes are large volcanoes that are built almost entirely of fluid lava flows, and have broad sloping sides and are generally surrounded by gently sloping hills in a circular or fan-shaped pattern that looks like a warrior’s shield.

Did Mt Rainier erupt?

Although Mount Rainier has not produced a significant eruption in the past 500 years, it is potentially the most dangerous volcano in the Cascade Range because of its great height, frequent earthquakes, active hydrothermal system, and extensive glacier mantle.

Will Mount Rainier erupt soon?

Mount Rainier is behaving about as it has over the last half-million years, so all evidence suggests that the volcano will continue to erupt, grow, and collapse.