4 Different Types of Volcanoes According to Shape

Updated on November 17, 2018
Learn about the four different types of volcanoes (composite, shield, cinder cone, and lava dome).
Learn about the four different types of volcanoes (composite, shield, cinder cone, and lava dome). | Source

When we think of volcanoes, often the image that comes to mind is a catastrophic Hollywood-worthy explosion. Actually, there are different types of volcanoes—some are very dangerous, while others are not. In order to understand the true nature of a volcano, it is important to know what kind it is. Geologists and professional volcanologists usually classify volcanoes into four different types, based on their shape, magnitude, structure, material, and type of eruption.

Four Major Types of Volcanoes

  1. Cinder Cone, AKA Scoria Cone
  2. Shield
  3. Composite, AKA Strato
  4. Lava Dome

This article will also answer such questions as: What is a Volcano? What are the three states of volcanoes? What are the most dangerous volcanoes in the world? What are the tallest volcanoes in the world? Do volcanoes exist on other planets? What do you do when a volcano erupts? And, what is the Yellowstone Caldera?

Learn the different types of volcanoes
Learn the different types of volcanoes

Different Types of Volcanoes

Type of Volcano
Shape
Height
Slope
Cinder Cone, AKA Scoria Cone
Symmetrical cone
Up to 1,200 feet (370 meters)
30-40 degrees
Shield
Tall and broad
Up to over 30,000 feet (9,000 meters)
Roughly 10 degrees near the base and 5 degrees near the top
Composite, AKA Strato
Tall, steep, and symmetrical
Up to 8,000 feet (2,400 meters)
Roughly 6 degrees near the base and roughly 30 degrees near the top
Lava Dome
Dome
Up to 330 feet (100 meters)
25-30 degrees
Cinder Cones
Cinder Cones

1. Cinder Cone, AKA Scoria Cone

Examples of cinder cone volcanoes: Paricutín in Mexico, Lava Butte, Sunset Crater

One of the most common types of volcanoes is the cinder cone. Less dangerous compared to other types, cinder cones only grow to about 1,000-1,200 feet tall. Unlike some of the other types of volcanoes—namely, shield volcanoes and composite volcanoes—cinder cones are usually created from a single opening. The opening of a cinder cone is a cone-shaped structure, while the steeps are formed of the erupted, fragmented cinders that fall close to the chimney/vent.

The manner of eruption for cinder cones is relatively simple. When the lava erupts, cinders of it are blown into the air. These fragmented cinders fall a short distance from the opening, thus creating the cone.

Shield Volcanoes
Shield Volcanoes

2. Shield Volcanoes

Examples of shield volcanoes: Hualalai, Mauna Loa, Kohala Volcano

Another type of volcano is the shield volcano. Unlike cinder cones, shield volcanoes can be very, very big in size. However, they are not as dangerous as that size might make it seem. This is because the eruption of lava out of shield volcanoes is not accompanied by pyroclastic material (bursts of gas and particles).

Shield volcanoes may be tall but tend to be very broad, with less steep slopes than other volcanoes.

Shield volcanoes can be huge because of their ample supply of magma. For example, Mauna Loa is a shield volcano that rises more than 30,000 feet above its base on the bottom of the ocean.

Composite (AKA Strato) Volcanoes
Composite (AKA Strato) Volcanoes

3. Composite Volcanoes

Examples of composite volcanoes: Mount Fuji, Mount Shasta, Mount St. Helens, Mount Rainier

Composite volcanoes are also known as strato volcanoes. Composite volcanoes are reasonably big and can rise up 8,000-10,000 feet. Moreover, they can range anywhere from 1-10 km in diameter. Their eruptions are dangerous and explosive in nature, with many layers of lava and pyroclastic materials, the current of rock and gas that can reach 1,800°F and 450 mph, killing any living organism in its path immediately. The citizens of Pompeii were killed by a composite volcano's pyroclastic flow.

The general structure of composite volcanoes is tall and symmetrical and with steep sides. Commonly, composite volcanoes erupt hot gases, ash, lava, and pumice as well as stiff, slow-moving lava. Moreover, deadly mudflows—also commonly known as ‘lahars’—can also accompany the eruption.

Composite volcanoes are believed to kill the most people because of their deadly nature and high numbers. Apart from their dangerous side, composite volcanoes are also famous because they comprise some of the most beautiful mountains on planet Earth. For example, Mount Fuji of Japan and Mount Shasta in California are two famous composite volcanoes.

Lava Domes
Lava Domes

4. Lava Dome Volcano

Examples of lava dome volcanoes: There are lava domes within the crater of Mount St. Helens, Chaitén lava dome, Lassen Peak

Lava domes are the fourth type of volcano that we are going to discuss. Unlike composite and shield volcanoes, lava domes are of significantly smaller stature. They are formed when the lava is too viscous to flow to a great distance. As the lava dome slowly grows, the outer surface cools and hardens as the lava continues to pile within. Eventually, the internal pressure can shatter the outer surface, causing loose fragments to spill down its sides. Generally, such lava domes are found on the flanks of larger composite volcanoes.

So, the bottom line is that there are four different types of volcanoes, each with a different set of characteristics and structure. Some are more dangerous and catastrophic than others. Having this knowledge keeps you informed about the different types of volcanoes.

Want to read further on how volcanoes form? Rosalyn M. C. Lopes' The Volcano Adventure Guide breaks the process down in detail starting on page 38.

What Is a Volcano?

A volcano is a vent that directly connects magma to the surface of the Earth. It is also described as a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.

Three States of Volcanoes

There are three states of volcanoes, which are important in completely grasping the topic. These three states are:

  1. Extinct Volcanoes
  2. Dormant Volcanoes
  3. Active Volcanoes

Volcanic State
Description
Example
Extinct Volcanoes
Extinct volcanoes will never erupt again.
Ben Nevis, the tallest mountain in Scotland, and the British Isles.
Dormant Volcanoes
Dormant volcanoes have been in the state of sleep or dormancy for a very long period of time—usually at least 2,000 years. However, dormant volcanoes are not extinct and, hence, could erupt at any time.
Sakurajima, Japan.
Active Volcanoes
Active volcanoes are considered as immediate threats. Lava and gases may erupt from these volcanos, and/or these volcanoes may show seismic activities. An active volcano may have erupted recently and is at a risk of erupting again.
Mauna Loa, Hawaii

Most Dangerous Volcanoes

Composite volcanoes are some of the most dangerous volcanoes on the planet. A composite volcano is formed over hundreds of thousands of years through multiple eruptions. The eruptions build up the composite volcano, layer upon layer until it towers thousands of meters tall. Some layers might be formed from lava, while others might be ash, rock and pyroclastic flows. A composite volcano can also build up large quantities of thick magma, which blocks up inside the volcano, and causes it to detonate in a large volcanic explosion. Even larger, calderas, such as the Yellowstone caldera, are mind-boggling powerful, with the capacity to cover the entire U.S. in ash.

Most Dangerous Volcanoes in the World

Volcano
Description
Location
Taal
A volcano composed of several foci that since 1572 have erupted on 33 occasions, the last one in 1977.
Philippines
Krakatoa
On August 27, 1883, four huge explosions—which could be heard up to 5,000 kilometres away—destroyed almost three quarters of the archipelago of Krakatoa (or Krakatau) in what is now Indonesia.
Indonesia
Merapi
Considered the most active volcano in Indonesia, it has been erupting almost continuously since the sixteenth century.
Indonesia
Popocatepetl
This volcano is a scant 70 kilometres that separate the volcano from the 20 million inhabitants of Mexico City.
Mexico
Cumbre Vieja
If this island volcano erupts it could cause the entire face to collapse westward and provoke a mega-tsunami that could cross the Atlantic and devastate the American east coast.
Canary Islands, Spain
Mount Vesuvius
Italy’s Vesuvius has been a menacing figure since an eruption in 79 CE buried the city of Pompeii.
Pompeii
Mount Rainier
The heat from Mount Rainier’s lava flows could potentially melt the snow and ice on the volcano, causing a rapid downstream flow of mud, rocks and debris called lahar.
Washington State

Tallest Volcanoes

Earth's crust is around three to 37 miles thick. It is broken up into seven major and 152 smaller pieces called tectonic plates. These plates float on a layer of magma (semi-liquid rock and dissolved gases). At the boundaries of these plates they move past, are pushed under, or move away from each other. The magma (which is lighter than the surrounding solid rock) is often able to force its way up through cracks and fissures. Magma that has erupted is called lava.

The world's largest volcano, Mauna Loa in Hawaii, is a shield volcano. Mauna Loa is about 55,770 feet from its base, which is deep beneath the ocean to the summit. It's summit is 13,681 feet above sea level. It is one of the Earth's most active volcanoes. Shield volcanoes have a reputation for being powerful and enormous.

Tallest Volcanoes in the World

Volcano
Location
Height
Ojos del Salado
Andes on the Argentina–Chile border
22,615′
Coropuna
Southern Peruvian Andes
21,079′
Parinacota
The border of Chile and Bolivia
20,827′
Chimborazo
Ecuador
20,564′
Cotopaxi
Latacunga, Ecuador
19,347′
Mount Kilimanjaro
Tanzania
19,341′
Popocatépetl
Mexico-Puebla-Morelos, Mexico
17,802′

Do Volcanoes Exist on Other Planets?

Volcanoes are a fairly regular feature on rocky planets and moons. For example, the surface of Venus is dominated by volcanic features. It has more volcanoes than any other planet in the Solar System.

Scientists have never recorded an active volcano eruption on the surface of Mars. However, Mars has the tallest dormant volcano in the solar system, Olympus Mons.

With over 400 active volcanoes, Io is the most volcanically active object in the Solar System. This extreme geologic activity is the result of tidal heating from friction generated within its interior as it is pulled between Jupiter, Europa, Ganymede, and Callisto.

What Do You Do When a Volcano Erupts?

When a large volcano erupts, it's one of the most devastating events in the natural world. Those who are unprepared can die in numerous ways. If a volcano erupts in your area, there are several things you'll need to do in order to survive

To survive a volcanic eruption you'll need to:

  • Evacuate only as recommended by authorities to stay clear of lava, mud flows, and flying rocks and debris.
  • Before you leave the house, change into long-sleeved shirts and long pants and use goggles or eyeglasses, not contacts.
  • Wear an emergency mask or hold a damp cloth over your face.
  • Stay away from areas downwind from the volcano to avoid volcanic ash.
  • Stay indoors until the ash has settled unless there is a danger of the roof collapsing.

What Is the Yellowstone Caldera?

Elevation: 9,203′

Location: Yellowstone National Park, Wyoming, United States

Mountain range: Rocky Mountains

The last time the Yellowstone supervolcano erupted was over 640,000+ years ago. The eruption area collapsed upon itself, creating a gigantic sunken crater or caldera that is 1,500 square miles in area. The magmatic heat powering that eruption still powers the park’s famous geysers, hot springs, fumaroles, and mud pots.

Yellowstone is technically a "supervolcano." The term “supervolcano” implies an eruption of magnitude 8 on the Volcano Explosivity Index. This indicates an eruption of more than 1,000 cubic kilometers of magma. The yellowstone eruptions 6,000 years ago was estimated to be 2,500 times larger than the May 18, 1980 eruption of Mt. St. Helens in Washington State.

Sources

Poll Time!

Have you ever seen a volcano? Which one was it?

See results

Questions & Answers

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      • profile image

        That guy from Nz 

        4 weeks ago

        I live on the side of a cinder cone lol

        And an Island just out at sea is a shield volcano

        ...and farther south we have composite volcanoes

      • profile image

        @jairah 

        4 weeks ago

        Great!

      • profile image

        Nordlys 

        6 months ago

        The volcano I saw is a stratovolcano, the most famous and among the most dangerous: Mount Vesuvius.

      • profile image

        a guy 

        6 months ago

        ana maria orantes u are passionate

      • erorantes profile image

        Ana Maria Orantes 

        7 months ago from Miami Florida

        Thank you for responding my comment mister boiiii.

      • erorantes profile image

        Ana Maria Orantes 

        7 months ago from Miami Florida

        Did you see what it is going on with Hawaii volcanoes. El Salvador Central America has a team of scientists working and monitoring the volcanoes activity. If you used you tub . They explain what it is going on. The video is in Spanish language.

      • profile image

        boiiii 

        7 months ago

        thx so much this was so much help

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        7 months ago

        thanks sooooo much i just had a paper on this in class and this helped so much volcanoes are really cool thanks

      • erorantes profile image

        Ana Maria Orantes 

        7 months ago from Miami Florida

        Hello mister Said. I was reading your hub. Congratulations to you. Volcanoes are so dangerous to all of us. I saw what happened in Hawaii and still going on. Your explanation is very important to the people in Hawaii and to others. The shoes to walk around the hot areas have to be from a good rubber to protect the feet; lava is so hot that can burn the skin. Thank you for the information.

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        7 months ago

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        7 months ago

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        21 months ago

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        21 months ago

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        2 years ago

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        2 years ago

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        2 years ago

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        2 years ago

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        2 years ago

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        2 years ago

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        3 years ago

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        3 years ago

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        3 years ago

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        Deanna Amodeo 

        3 years ago from Big Island

        This is awesome. I lived on the big island in Pahoa, and had a lava flow not even a mile away from me!

      • profile image

        Emily 

        3 years ago

        this really helped me

      • profile image

        King Peter the magnificent 

        3 years ago

        volcanoes are awesome

      • Kristen Howe profile image

        Kristen Howe 

        3 years ago from Northeast Ohio

        This was a fascinating hub on the different types of volcanoes. There are always beautiful to see and dangerous to be near at the same time. Voted up!

      • profile image

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        3 years ago

        thanks a lot ((: GB

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        4 years ago

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        4 years ago

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        4 years ago

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        Pj 

        4 years ago

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      • profile image

        Snakesmum 

        4 years ago

        Volcanoes are awesome, and I've stood on the outer crater of one which was in minor eruption at the time. It was one of the great experiences of all time for me. We weren't allowed into the crater to the lower level though, as it was too active to go down and see the lava lake.

        Interesting article.

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        4 years ago

        great service :)

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        luke 

        4 years ago

        this awesome

      • erorantes profile image

        Ana Maria Orantes 

        4 years ago from Miami Florida

        I like your article on the volcanos. Volcanos are the most dangerous activity that the earth have. Volcanos are destructive . Every time, I see a volcano active on television. I feel worry about the scientists that work on the volcanos. Other people around , they are smart . They leave fast. You did a marvelous job on your hub. Thank you for sharing your good work.

      • profile image

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        4 years ago

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        Avinesh Prahladi 

        5 years ago from Chandigarh

        I must say that it's a nice & an interesting theme for a hub. Keep posting such interesting hubs.

        Cheers !!!

      • Twilight Lawns profile image

        Twilight Lawns 

        5 years ago from Norbury-sur-Mer, Surrey, England. U.K.

        Not so close neighbours now, my friend. I moved a few miles down the road to London, UK.

      • Hunbbel Meer profile imageAUTHOR

        Syed Hunbbel Meer 

        5 years ago from Karachi, Pakistan.

        @Mel: Indeed. It is very scary, and walking there must be fascinating and interesting :)

        @vibesites: It must have been a great experience hiking there. Great to hear about that and thanks for stopping by :)

      • Hunbbel Meer profile imageAUTHOR

        Syed Hunbbel Meer 

        5 years ago from Karachi, Pakistan.

        @Twilightlawns: Yes, I have :) In fact, consider me your neighbor. I'm from Karachi :)

      • vibesites profile image

        vibesites 

        5 years ago from United States

        This is really interesting.. The Philippines' Mayon Volcano is also a good composite (and active) volcano btw, having the perfect shape. I've hiked there once and fortunately I've returned in one piece. :)

        The works of Mother Nature is always interesting and awe-inspiring

      • Mel Carriere profile image

        Mel Carriere 

        5 years ago from San Diego California

        Very concise and interesting summary. I have been to Sunset Crater and was fascinated walking through the lava flows. It is sort of scary to think that major cities like Seattle are located at the foot of deadly volcanoes. Nice work!

      • Twilight Lawns profile image

        Twilight Lawns 

        5 years ago from Norbury-sur-Mer, Surrey, England. U.K.

        A really very interesting hub. Thank you.

        I have always been fascinated by volcanoes and loved it when we studied them at school.

        Your hub was easy to read and struck just the right balance between really interesting and very informative, without being tedious.

        By the way, I feel that my interest in volcanoes may stem from the fact that i was born in a city that is build in the crater of an extinct volcano.

        I think you must have heard of it... Quetta, in Baluchistan.

      • profile image

        judy ann 

        5 years ago

        wonderful!!!!@ interesting huh..

      • profile image

        jacob noonan 

        5 years ago

        i use this website all the time for high school research paers. love the website

      • Hunbbel Meer profile imageAUTHOR

        Syed Hunbbel Meer 

        5 years ago from Karachi, Pakistan.

        @Livingsta and @Joseph: Thank you for stopping by :)

      • Joseph Muendo profile image

        Joseph Muendo 

        5 years ago from Nairobi, Kenya

        Interesting and informative

      • livingsta profile image

        livingsta 

        6 years ago from United Kingdom

        Interesting hub, thank you for sharing!

      • Hunbbel Meer profile imageAUTHOR

        Syed Hunbbel Meer 

        6 years ago from Karachi, Pakistan.

        Thank you, Vellur, for stopping by. Volcanoes always intrigues me and I hope that by studying these 4 different types of Volcanoes, people will understand them better.

      • Vellur profile image

        Nithya Venkat 

        6 years ago from Dubai

        Volcanoes very well explained, thank you for sharing this with us. Voted up and shared.

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