How many times has Ol Doinyo Lengai erupted in the last 100 years?

Answered by Douglas Hiatt

Well, let me tell you about my personal experience with Ol Doinyo Lengai, also known as the Mountain of God. I had the opportunity to visit this magnificent volcano in Tanzania a few years ago, and it was truly an awe-inspiring sight.

Now, Ol Doinyo Lengai is quite unique compared to other volcanoes because it is a carbonatite volcano. This means that instead of spewing out the typical basaltic lava, it erupts with a rare type of lava called natrocarbonatite. This lava is composed mainly of sodium and calcium carbonates, which gives it a distinctive black color.

One interesting thing about the eruptions of Ol Doinyo Lengai is that the temperature of the lava is relatively low compared to other volcanoes. While most lavas can reach temperatures exceeding 1,000 degrees Celsius, the lava from Lengai is much cooler, ranging from around 510 to 600 degrees Celsius. So, it’s not exactly cool, but definitely cooler than what you would expect from a volcano.

In terms of its eruption frequency, Ol Doinyo Lengai has been quite active in the past century. On average, it has erupted about 15 times in the last 100 years, which is quite remarkable. The most recent eruption occurred in 2013, and it was a sight to behold.

During my visit, I had the opportunity to witness the aftermath of one of Lengai’s eruptions. The landscape was surreal, with black lava flows stretching out across the surrounding area. It was a stark reminder of the raw power of nature.

It’s important to note that Ol Doinyo Lengai is considered an active volcano, and its eruptions can have significant impacts on the surrounding environment. The natrocarbonatite lava is highly fluid and can travel long distances, posing a risk to nearby communities and wildlife.

Ol Doinyo Lengai has erupted approximately 15 times in the last 100 years, with the most recent eruption occurring in 2013. Its unique composition and relatively low lava temperature make it a fascinating and captivating volcano to study. However, it’s important to keep in mind the potential risks associated with its eruptions.