One of the most well-known mountains in popular culture is Kilimanjaro . It is a triple volcano, consisting of three volcanic peaks. Each peak is considered a summit and is known as Kibo, Mawenzi, and Shira. Of these three peaks, Kibo is the tallest. Located in Africa, it is the highest mountain on the continent, reaching an altitude of 5.895 meters above sea level. It is known as the tallest freestanding mountain in the world.
In this article we are going to tell you about all the characteristics, formation and eruptions of Kilimanjaro.
Key features
Throughout history, geologists and volcanologists have debated whether Kilimanjaro is an extinct or inactive volcano. It has been categorized as dormant. This term could be translated as "sleeping" and refers to a type of volcano that has not erupted for a very long time. However, it could erupt at any moment. That's what a dormant volcano means. It means that, although it hasn't erupted, it could do so at any time. It is not extinct.
An inactive volcano can still emit gases or even erupt. In contrast, an extinct volcano no longer has enough magma to erupt. In the case of Kilimanjaro, the Mawenzi and Shira cones are two extinct peaks. This is because they no longer have enough magma to erupt. However, Kilimanjaro as a whole is still considered inactive since Kibo peak is still emitting gases.
Kilimanjaro is composed entirely of a stratovolcano, or composite volcano. This is a type of volcano formed through the accumulation of various flows of solidified materials. These materials are primarily ash and pumice. Kibo Peak is the central cone and the only active one so far. Geographically, we locate it in Tanzania, located about 330 kilometers south of the Equator and near the Kenyan border. This mountain rises above a plain, and one of its slopes is covered in forests, creating a beautiful contrast with the grasslands of the surrounding plains.
Since Kilimanjaro rises to over 5.000 meters, its peaks are typically snow-capped during the winter season. This creates one of the most beautiful landscapes in the world, where snow and savanna coexist. The mountain also boasts an enormous ice cap at its summit, but this mass is shrinking due to climate change. Kilimanjaro has lost approximately 80% of its ice mass since 1912.
Kilimanjaro formation
This mountain is located along a divergent tectonic plate boundary. This type of tectonic plate is one that is pulling apart, allowing magma to rise from deeper regions. This is how the volcano formed. Specifically, Kilimanjaro is located on the East African Rift. This area is known as a fracture where the African tectonic plate is gradually separating into two different plates. It is quite well-known worldwide because it formed at a geologically active boundary. At these boundaries, magma moves through the Earth's mantle until it reaches the surface.
The formation of Kilimanjaro took place less than 1 million years ago . All of this growth ceased approximately 300.000 years ago. It all began with the eruption and subsequent activity of Shira approximately 2.5 million years ago. During the Pliocene epoch , all the volcanic activity occurred and ended 1.9 million years ago. It was around 1 million years ago that the Kibo and Mawenzi peaks began to eject material from the Earth's interior.
Most of Kilimanjaro's development occurred during the Pleistocene epoch . The climate of this period was determined using methods such as studying lake levels, river flow, dune systems, glacial extent, and pollen. Since the Quaternary period, 21 major glaciations have taken place, with effects felt as far away as East Africa. Traces of the cooling climate across this region can be found on Kilimanjaro.
The climate indicates that all ecosystem trunks were isolated and alpine-type, with identical flora and fauna. This means that the ecosystem was initially larger and at a low altitude. Later, with the development of peaks, the entire environment was modified, and species had to adapt.
Eruptions
Although we've already mentioned that Kibo is the only one capable of erupting, it will surely erupt someday. Eruptive activity at Kilimanjaro was observed 2.5 million years ago following the Shira cone eruption. As previously mentioned, there are currently no known historical eruptions of this volcano. Activity has been greatly reduced, with only a few fumaroles escaping from the Kibo crater. These fumaroles have caused some minor rockfalls and landslides.
The volcano's last eruption may have occurred approximately 100.000 years ago. The last significant volcanic activity was recorded about 200 years ago. Although Shira and Mawenzi are now extinct, scientists continue to study this volcano and do not rule out the possibility that Kibo could erupt someday. However, it is not a dangerous volcano, so visitors can fully enjoy the surrounding landscapes. Only here can one observe the striking contrast between snow and savanna.
I hope that with this information you can learn more about Mount Kilimanjaro and all its characteristics.