Bukit Lumut Balai
Encyclopedia
Bukit Lumut Balai is a heavily eroded stratovolcano
on Sumatra
island, Indonesia
. It consist of three eruption centers, two on the Bukit Lumut and one one the northeast side of the Bukit Balai. A large lava flow occurs on the north side of Bukit Balai. Active fumarole
fields are found in two cresentic basins to the north of Bukit Lumut.
Stratovolcano
A stratovolcano, also known as a composite volcano, is a tall, conical volcano built up by many layers of hardened lava, tephra, pumice, and volcanic ash. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile and periodic, explosive eruptions...
on Sumatra
Sumatra
Sumatra is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia , and the sixth largest island in the world at 473,481 km2 with a population of 50,365,538...
island, Indonesia
Indonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
. It consist of three eruption centers, two on the Bukit Lumut and one one the northeast side of the Bukit Balai. A large lava flow occurs on the north side of Bukit Balai. Active fumarole
Fumarole
A fumarole is an opening in a planet's crust, often in the neighborhood of volcanoes, which emits steam and gases such as carbon dioxide, sulfur dioxide, hydrochloric acid, and hydrogen sulfide. The steam is created when superheated water turns to steam as its pressure drops when it emerges from...
fields are found in two cresentic basins to the north of Bukit Lumut.