what geological feature is located below an active volcano

What geologic feature is located below an active volcano?

A caldera is a large depression formed when a volcano erupts and collapses. During a volcanic eruption, magma present in the magma chamber underneath the volcano is expelled, often forcefully. When the magma chamber empties, the support that the magma had provided inside the chamber disappears.

Which of the following geological features forms at a subduction?

Deep trenches are features often formed where tectonic plates are being subducted and earthquakes are common. As the sinking plate moves deeper into the mantle, fluids are released from the rock causing the overlying mantle to partially melt.

How did Yellowstone caldera form?

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.

Why do shield volcanoes have weak eruptions?

Shield volcanoes have weak eruptions because the material that comes out of a volcano has low viscosity.

What geographic feature is associated with an oceanic plate going under a continental plate?

Oceanic trenches are formed at subduction zones. Oceanic plates meet continental plates in the water, so trenches are formed as the oceanic plate goes under the continental plate. These trenches can be very deep if the plate that is subducting (going down) is an older and colder plate.

Which of the following geological features formed in the divergent boundary?

A divergent plate boundary often forms a mountain chain known as a ridge. This feature forms as magma escapes into the space between the spreading tectonic plates.

How does a subduction zone form a volcano?

A subduction volcano forms when continental and oceanic crust collide. The oceanic crust melts and migrates upwards until it erupts on the surface, creating a volcano.

Is Yellowstone on a tectonic plate?

Most volcanoes occur at the boundary between two tectonic plates, but Yellowstone is unusual because it lies centrally on the North America plate. … Hot spots create chains of volcanoes (like the Hawaiian island chain) as the tectonic plate above glides over it.

What type of landform is Yellowstone?

Yellowstone is actually an enormous volcano, known as a super-volcano; it sits atop a geological hot spot, which is responsible for the park’s plethora of unusual but beautiful landforms.

What is the only continent without an active volcano?

Australia is the only continent without any current volcanic activity, but it hosts one of the world’s largest extinct volcanoes, the Tweed Volcano.

What are the characteristics of shield volcanoes?

Shield volcanoes have the following characteristics:

  • Basaltic magma, which is high in temperature, very low on silica and with low gas content. …
  • Basic lava, which is non-acidic and very runny.
  • Gentle sides as the lava flows for long distances before it solidifies.
  • No layers, as the volcano just consists of lava.

Where are shield volcanoes located?

Shield volcanoes are found wherever fluid low-silica lava reaches the surface of the Earth. However, they are most characteristic of ocean island volcanism associated with hot spots or with continental rift volcanism. They include the largest volcanoes on earth, such as Tamu Massif and Mauna Loa.

What is the composition of a shield volcano?

Shield volcanoes are composed almost entirely of relatively thin lava flows built up over a central vent. Most shields were formed by low viscosity basaltic magma that flows easily down slope away form the summit vent.

What feature is formed when the oceanic lithosphere Subducts beneath an oceanic plate?

Island arcs
Island arcs (intraoceanic or primitive arcs) are produced by the subduction of oceanic lithosphere beneath another oceanic lithosphere (ocean-ocean subduction) while continental arcs (Andean arcs) form during the subduction of oceanic lithosphere beneath a continental lithosphere (ocean-continent subduction).

What happens when continental and oceanic plates converge?

When an oceanic and a continental plate collide, eventually the oceanic plate is subducted under the continental plate due to the high density of the oceanic plate. … As time goes on the hot magma rising upward from the subduction zone causes further compression of the mountain belt.

When an oceanic plate goes under a continental plate it forms a?

When an ocean plate collides with another ocean plate or with a plate carrying continents, one plate will bend and slide under the other. This process is called subduction. A deep ocean trench forms at this subduction boundary.

What are geologic features?

What is a Geologic Feature? … The term can be defined as any physical feature of the earth’s surface – or of the rocks exposed at the surface – that is formed by a geologic process. Note that the same definition can be applied to the features of any planet or moon.

What geologic feature is formed when two continental plates collide?

Collision Zones and Mountains

Instead, a collision between two continental plates crunches and folds the rock at the boundary, lifting it up and leading to the formation of mountains and mountain ranges.

What are the geologic processes events that will occur because of these movement give at least 3?

The geologic processes/events that will occur because of this plate movement are:

  • Major geological events (this is the new formation of rocks or island)
  • Plate tectonic boundaries, divergent, …
  • Plate tectonics.
  • Fault lines.
  • Earthquakes.
  • Volcanoes eruption.
  • Seafloor spreading.
  • Oceanic spreading and movements.

What places in the Philippines have active volcanoes?


  • Mayon in Albay is the most active volcano in the Philippines.
  • Taal in Batangas.
  • Kanlaon in Negros island.
  • Bulusan in Sorsogon.
  • Smith in Calayan.
  • Hibok‑Hibok in Camiguin.
  • Pinatubo in Zambales.
  • Musuan in Bukidnon.

Which geologic landform is created from a convergent continental and oceanic boundaries?

Ocean trenches form at two kinds of convergent plate boundaries: where a continental and oceanic plate converge, or where two oceanic plates converge.

What geologic activity takes place in a convergent continental continental boundary?

When two continental plates converge, instead of subduction, the two similar tectonic plates will buckle up to create large mountain ranges like a massive car pile-up. This is called continental-to-continental convergence, and geologically creates intense folding and faulting rather than volcanic activity.

What plates are under Yellowstone?

Most volcanoes form on the boundaries of tectonic plates, where natural Earth processes create magma that rises to the surface. However, the Yellowstone supervolcano lies in the middle of the North American Plate.

What tectonic feature is associated with Yellowstone National Park?

Yellowstone itself is centered on the Yellowstone Caldera, a collapse feature related to three great volcanic eruptions, or periods of eruptions. The caldera, roughly 50 x 30 miles (80 x 50 km), includes Yellowstone Lake but extends well beyond it.

What geologic feature in Earth’s mantle is responsible for the formation of Yellowstone?

Millions of years ago, a source of immense heat known as a hotspot formed in the Earth’s mantle below what today is Yellowstone. Roughly 600,000 years ago, the hotspot pushed a large plume of magma toward the Earth’s surface. This caused the crust to jut upward.

What geological features define Yellowstone?

Aside from its rugged mountains and spectacular deep glacier-carved valleys, the park has unusual geologic features, including fossil forests, eroded basaltic lava flows, a black obsidian (volcanic glass) mountain, and odd erosional forms.

What is the geography of Yellowstone National Park?

Yellowstone is mainly located in the state of Wyoming, but it also extends into Montana and a small part of Idaho. It covers an area of 3,472 square miles (8,987 sq km) that is made up of various geothermal features like geysers, as well as mountains, lakes, canyons, and rivers.

What biome is Yellowstone National Park?

Yellowstone Biomes

Yellowstone is mostly a Boreal or Taiga biome. This biome is classified by short and relatively chillier summers, along with long, crude winters. There is typically only two layers in the forest. The dominating trees are conifers including, pine and spruce.

Where are no active volcanoes?

Dormant → Dormant volcanoes are volcanoes that have not erupted in a long time but are expected to erupt again in the future. Examples of dormant volcanoes are Mount Kilimanjaro, Tanzania, Africa and Mount Fuji in Japan.

Do all continents have active volcanoes?

Volcanoes are Earth’s geologic architects. … There are volcanoes on every continent, even Antarctica. Some 1,500 volcanoes are still considered potentially active around the world today; 161 of those—over 10 percent—sit within the boundaries of the United States. But each volcano is different.

How many active volcanoes are in South America?

Active volcanoes in South America run along the continental divide defined by the Andes, and group into the northern, central, and southern volcanic zones. South America has some 174 volcanoes with historic eruptions and youthful aspect to their volcanic edifices.

What are the distinct characteristics of shield cones?

Some unique characteristics of shield volcanoes are: wide, broad dome shape. can have asymmetrical sides due to eruptions in vents along the side of the volcano (rift zones) made from sheets of cooled lava flows (basalt)

Why do shield volcanoes tend to maintain a low profile and spread out over wide areas?

what geological feature is located below an active volcano

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