The History of Ijen Crater to Form a Blue Fire


This is history Ijen crater to form blue Fire or blue flame. It turns out Banyuwangiis the only one who has it.

Ijen Crater Nature Tourism Park (TWA) is the only place that has a blue fire. The formation of Ijen Crater occurred 70 thousand years ago. Previously, Ijen Crater was the caldera of the Ancient Mount Ijen which existed 300 thousand years ago.

The daily chairman of the Ijen Banyuwangi Geopark, Abdillah Baraas, said that Mount Ijen Purba was formed 300 thousand years ago. Its territory is currently in 4 districts, namely Banyuwangi, Bondowoso, Situbondo, and Jember. Ancient Mount Ijen has a height of about 3,500 meters above sea level (masl).

“Before the formation of Ijen Crater, 300 thousand years ago, there was only one big mountain, namely ancient Ijen,” he said secondsJatim, Wednesday (27/1/2022).

But in 70 thousand years, said Abdillah, Mount Ijen Purba erupted violently. This gives rise to a caldera with a diameter of 15 kilometers. Not only that, small mountains appeared around the caldera and the edge of the caldera.

“The ancient eruption of Mount Ijen is no less interesting than the eruption of Mount Toba on Lake Toba. And until finally it gave rise to the largest caldera in Java with a diameter of 15 kilometers,” he added.

Blue fire in Ijen Crater (Photo: Special)

Based on a number of geological literature, the super-explosive eruption threw up to about 466 km of dominant volcanic material towards the north. This explosive eruption then made the magma chamber empty and caused a subsidence to form a caldera depression.

After the explosive eruption of the Ijen Purba Volcano, the caldera was formed and several volcanoes appeared. The number reaches 22 volcanoes. Scattered on the walls (rings) of the caldera and in the dry caldera.

The volcanoes on the caldera wall are Mount Merapi, Suket, Jampit, Ringgih, Pawenan, and Rante. While those in the caldera include Wurung Crater, Blau, Papak, Kukusan, and Ijen mountains and others.

“Currently, only Ijen Crater is still active. The existence of a mountain means that there is still a heat source in it. So it is like a stove that is still in Ijen Crater. Meanwhile, other mountains are not active,” he added.

The activation of Ijen Crater, said Abdillah, one of which is the emergence of Blue Flame in Ijen Crater. The blue flame appears due to the pressure of the gas interacting with the sulfur. The release of H2S on a high-temperature surface causes a blue flame. So it was nicknamed the blue fire.

“Blue flame appears like a gas stove. It is different from an oil stove that burns through a capillary. There is gas from the magmatic system under Ijen so that H2S comes out on the surface with a high temperature and then interacts with sulfur causing a blue fire,” he concluded.

This article has been published in detikJatim. For information and news about Surabaya, Malang, and other areas in East Java, click here.

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