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The Nglanggeran Ancient Volcano is estimated to have been active more than 60 million years ago. Photo/Geoheritage Yogyakarta
JAKARTA – The term ancient volcano may still sound foreign to some people. Usually, they more often hear the names of active or inactive volcanoes.
Some time ago, a group of researchers discovered an ancient mountain off the Pacific coast of Canada. Interestingly, it turns out that the mountain is said to still be active.
Quoting the Live Science page, Tuesday (19/9/2023), previously the research team thought the ancient volcano was no longer active. However, they discovered the fact that the underwater mountain spews out warm water that is rich in minerals and keeps the surrounding waters warm.
So, what is meant by an ancient volcano? Check out the explanation below.
History of Ancient Volcanoes
The term ancient volcano refers to fossilized volcanoes that were once active, but are now no longer active, i.e. completely dead. Looking at its history, the ancient volcano was once an active volcano. However, due to a process or condition that occurs over time, the mountain becomes dead and no longer active.
When a volcano dies, its supply of magma is cut off. Meanwhile, the remnants also lost the ability to come out on top. Over time, the remaining magma will solidify and form rocks such as granite.
In most cases, ancient volcanoes have actually died. So it is quite unlikely that it will become active again at any time.
Regarding examples of ancient volcanoes, their existence is widely known in the world. You don’t need to go far, Indonesia also has several of them.
One of them is the Nglanggeran Ancient Volcano. Quoting the DIY Geological Heritage page, the mountain is estimated to have been active more than 60 million years ago.
Looking at its condition, the mountain is dominated by limestone and originates from a seabed volcano that was uplifted before finally becoming land millions of years ago. The peak of the mountain is Mount Gedhe at an altitude of around 700 meters above sea level.
Thus the comments about the history of ancient volcanoes are interesting to know.
(oct)
