Whenever we talk and think about a Volcano, the first image that comes to mind is a catastrophic Hollywood animated worthy explosion of red hot magma and lava through a vent with a boom blast burst sound.
The study of volcano comes under the Geomorphology, Geology branch of Geography as its especially and directly related to Earth’s crust.
However, as the volcano provides the open passage to the Earth’s interior, our Geologist and professional volcanologist dig out more information, used in the mapping of active volcano areas, forecasting of possible volcanic eruptions and earthquake.
So, on the basis of the collection of information and after compilation of it, our Geologist and Volcanologist classify volcanoes, in order to know it’s nature, structure, shape, size magnitude, time of the eruption, and material, into mainly three broad categories.
Now going to discuss each category one by one in detail.
There are further three more divisions of the volcano, on the basis of it’s eruption time. These are:
These are those volcanoes through which volcanic eruptions like lava, magma, ashes, etc. keep on erupting very often. Its vent is always opened.
For example, Italy's Etna volcano, which is active from last around 2500 years, Sisley Island Stromboli volcano erupt each after 15 minutes.
This kind of volcanoes is quiet from last so many years but there is always a chance to erupt any time in the future and cause major destruction of life and to the economy of a country.
For example, Italy Vesuvius volcano suddenly erupted in 1931.
In this kind of volcanoes, there is no chance to erupt in the future.
Their mouth (vent/creator) is closed now and filled with water and became a volcanic lake.
For example, Papa volcano of Myanmar is a good example of this.
According to this we can further divide it into four types. These are:
For example, Lava Butte, in Newberry National volcanic monument, Oregon; Mount Omuro in Honshu, Japan, Cocoa crater of British Columbia, Kostal cone of Canada.
For example, Mauna Loa of Hawaii volcano is the world’s largest volcano.
For example, a modern example of this is- Mount Saint Helens and Mount Pinatubo.
Other examples are Mount Vesuvius of Italy, Krakatoa of Indonesia, and many more.
For example, Chaiten Lava dome of Chile, Galeras lava dome of Colombia, Black Butte of United States.
Do you find any volcanic topography in your region or country? Which category of volcano type does it belong to?
Write to me with the answers to these questions. Also, inviting your queries, experiences, views for the same.
On this basis volcanologists and geologists divide volcanoes into two types. But the question arises about the vent. To understand this first we should know about the vent first.
What is volcanic vent?
The volcanic vent is the openings on the Earth’s crust (surface of the earth), through which lava and pyroclastic flows are erupted or ejected.
This vent is connected underneath the surface of the Earth where the liquified rocks or magma is present in molten form, due to a great increase in pressure, and over time, it burst out through the vent, on the surface of Earth’s crust.
For example, Hawaii type, Strombolian and Volcanism type, Vesuvian type, Plinian type.
For example, the Bishoftu volcanic field, Quetena Roy mountain, lava channel of Hawaii, etc.
In this post, I tried to cover all major types of volcanoes, found all over the world, in very simple words. I'm here for you, to know more and for more interesting cum exciting information about our beautiful planet Earth, stay tuned with me.