Is Mount Etna a composite or shield volcano?

Composite volcanoes are steep-sided and cone-shaped, made up of layers of ash and lava and containing sticky lava which doesn’t flow very far. Mount Etna in Italy is a composite volcano. Shield volcanoes have gently sloping sides and runny lava that covers a wide area.

What type of volcano is Mt St Etna?

Stratovolcano

What are 3 shield volcanoes?

Examples of shield volcanoes are Kilauea and Mauna Loa (and their Hawaiian friends), Fernandina (and its Galápagos friends), Karthala, Erta Ale, Tolbachik, Masaya, and many others.

Is shield volcano a composite?

Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions. Cinder cones are the smallest volcanoes and result from accumulation of many small fragments of ejected material.

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.

What type of volcano is Kilauea?

basaltic shield volcano

Kilauea is a basaltic shield volcano, erupting a type of basalt known as tholeiite. This type of lava is the dominant extrusive during the shield building (the main stage) of hawaiian volcanism and is the dominant basalt type erupted on Earth.

Where is Mount Kilauea volcano located?

the island of Hawaii, Hawaii state

Kilauea, also called Mount Kilauea, the world’s most active volcanic mass, located on the southeastern part of the island of Hawaii, Hawaii state, U.S. The central feature of Hawaii Volcanoes National Park, Kilauea (“Much Spreading” in Hawaiian), is an elongated dome built of lava eruptions from a central crater and …

How did Mount Kilauea form?

Like all Hawaiian volcanoes, Kīlauea was created as the Pacific tectonic plate moved over the Hawaiian hotspot in the Earth’s underlying mantle. The Hawaii island volcanoes are the most recent evidence of this process that, over 70 million years, has created the 6,000 km (3,700 mi)-long Hawaiian–Emperor seamount chain.

How do shield volcanoes form?

Shield volcanoes form when a centralized vent produces low-viscosity flows over a long period of time (Walker, 2000). Most commonly they comprise basaltic lavas, but higher silica peralkaline lavas may also be present (Fig. 38).

Where are composite volcanoes formed?

Composite volcanoes, also known as stratovolcanoes, are found on convergent plate boundaries , where the oceanic crust subducts beneath the continental crust.

Why are shield volcanoes wider than composite volcanoes?

The magma that creates shield volcanoes is less viscous, so it flows much more easily. For this reason, the eruptions of shield volcanoes are non-explosive. In addition, the less viscous lava spreads out more, which makes shield volcanoes much larger and flatter than stratovolcanoes.

What do shield volcanoes consist of?

lava flows

Shield volcanoes consist largely of thin lava flows, with minor pyroclastic (mainly ash) layers. Their subaerial (above sea-level) slopes are mostly 4-8 degrees, having steep-walled summit calderas and also pit craters (sinkholes) that are similar to calderas in form but much smaller.

Are composite volcanoes explosive or effusive?

Composite volcanoes are tall, steep cones that produce explosive eruptions. Shield volcanoes form very large, gently sloped mounds from effusive eruptions.

How would you describe a composite volcano?

Composite volcanoes, sometimes called stratovolcanoes, are typically deep-sided, symmetrical cones of large dimension built of alternating layers of lava flows, volcanic ash, cinders, blocks, and bombs and may rise as much as 8,000 ft above their bases.

What are 2 shield volcanoes?

Shield volcanoes are constructed primarily of thin lava flows that cover large areas. Basaltic shield volcanoes such as Mauna Loa and Kīlauea in Hawai’i Volcanoes National Park erupt primarily pāhoehoe and ‘a’ā lavas.

Is Mount Mayon a shield volcano?

Mayon, located in the Philippines, is a highly active stratovolcano with recorded historical eruptions dating back to 1616.

Is Mt Fuji a shield volcano?

Mount Fuji is an active stratovolcano that last erupted from 1707 to 1708. The mountain is located about 100 km (62 mi) southwest of Tokyo and is visible from there on clear days.

What are the different types of shield volcanoes?

Shield volcanoes, the third type of volcano, are built almost entirely of fluid lava flows. Flow after flow pours out in all directions from a central summit vent, or group of vents, building a broad, gently sloping cone of flat, domical shape, with a profile much like that of a warrior’s shield.

What type of lava is in a composite volcano?

felsic

Composite volcano magma is felsic, which means it contains silicate-rich minerals rhyolite, andesite, and dacite. Low-viscosity lava from a shield volcano, such as might be found in Hawaii, flows from fissures and spreads.

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 composite cones?

Composite cones. Composite cones are some of the most easily recognizable and imposing volcanic mountains, with sloping peaks rising several thousand meters above the landscape. Also known as stratocones, composite cones are made up of layers of lava, volcanic ash, and fragmented rocks.

Where are shield volcanoes found?

Shield volcanoes mostly occur at divergent boundaries. Specifically, they can occur in rift valleys and mid-ocean ridges, which all form at divergent boundaries themselves. They also form at hotspots.

What is a composite volcano made of?

Stratovolcanoes are also called composite volcanoes because they are built of layers of alternating lava flow, ash and blocks of unmelted stone, according to the U.S. Geological Survey. They are larger than cinder cones, rising up to 8,000 feet (2,438 m).