Ragang
Encyclopedia
Mount Ragang, also called Mount Piapayungan and Blue Mountain by the local people, is a stratovolcano
on Mindanao
island in the Philippines
. It is the seventh highest mountain in the Philippines
.
of Lanao del Sur
and Cotabato
in the Autonomous Region in Muslim Mindanao
.
It is the most active volcano on Mindanao, and is part of a string of volcanoes in what volcanologist
s call the Central Mindanao Arc.
lists eight eruptions with the last one occurring in July 1916. But the Smithsonian Institution's Global Volcanology Programs, citing the Catalog of Active Volcanoes of the World (Neumann van Padang, 1953), suggests that some eruptions attributed to nearby Makaturing
were actually those of Ragang.
Ragang is one of the active volcanos in the Philippines, which are all part of the Pacific ring of fire
.
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 Mindanao
Mindanao
Mindanao is the second largest and easternmost island in the Philippines. It is also the name of one of the three island groups in the country, which consists of the island of Mindanao and smaller surrounding islands. The other two are Luzon and the Visayas. The island of Mindanao is called The...
island in the Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...
. It is the seventh highest mountain in the Philippines
Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...
.
Location
Mount Ragang is located on the boundary of the provincesProvinces of the Philippines
The Provinces of the Philippines are the primary political and administrative divisions of the Philippines. There are 80 provinces at present, further subdivided into component cities and municipalities. The National Capital Region, as well as independent cities, are autonomous from any provincial...
of Lanao del Sur
Lanao del Sur
Lanao del Sur is a province of the Philippines located in the Autonomous Region in Muslim Mindanao . Its capital is Marawi City and borders Lanao del Norte to the north, Bukidnon to the east, and Maguindanao and Cotabato to the south. To the southwest lies Illana Bay, an arm of the Moro Gulf...
and Cotabato
Cotabato
Cotabato , is a landlocked province of the Philippines located in the SOCCSKSARGEN region in Mindanao...
in the Autonomous Region in Muslim Mindanao
Autonomous Region in Muslim Mindanao
The Autonomous Region in Muslim Mindanao is the region, located in the Mindanao island group of the Philippines, that is composed of predominantly Muslim provinces, namely: Basilan , Lanao del Sur, Maguindanao, Sulu and Tawi-Tawi. It is the only region that has its own government...
.
Physical features
Ragang has an elevation of 2815 metres (9,236 ft) and a base diameter of 32 km (20 mi).It is the most active volcano on Mindanao, and is part of a string of volcanoes in what volcanologist
Volcanologist
A volcanologist is a person who studies the formation of volcanoes, and their current and historic eruptions. Volcanologists frequently visit volcanoes, especially active ones, to observe volcanic eruptions, collect eruptive products including tephra , rock and lava samples...
s call the Central Mindanao Arc.
Eruptions
There is still some confusion on the number of times Ragang erupted. The Philippine Institute of Volcanology and SeismologyPhilippine Institute of Volcanology and Seismology
The Philippine Institute of Volcanology and Seismology is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes and tsunamis, as well as other specialized information and services primarily for the protection of life and property and in...
lists eight eruptions with the last one occurring in July 1916. But the Smithsonian Institution's Global Volcanology Programs, citing the Catalog of Active Volcanoes of the World (Neumann van Padang, 1953), suggests that some eruptions attributed to nearby Makaturing
Makaturing
Makaturing, is a stratovolcano on Mindanao island in the Philippines. It is found in the province of Lanao del Sur in the Autonomous Region in Muslim Mindanao. Makaturing has an elevation of and a base diameter of...
were actually those of Ragang.
Ragang is one of the active volcanos in the Philippines, which are all part of the Pacific ring of fire
Pacific Ring of Fire
The Pacific Ring of Fire is an area where large numbers of earthquakes and volcanic eruptions occur in the basin of the Pacific Ocean. In a horseshoe shape, it is associated with a nearly continuous series of oceanic trenches, volcanic arcs, and volcanic belts and/or plate movements...
.
External links
See also
- Active volcanos in the Philippines
- Potentially active volcanos in the Philippines
- Inactive volcanos in the Philippines
- Philippine Institute of Volcanology and SeismologyPhilippine Institute of Volcanology and SeismologyThe Philippine Institute of Volcanology and Seismology is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes and tsunamis, as well as other specialized information and services primarily for the protection of life and property and in...
- VolcanoVolcano2. Bedrock3. Conduit 4. Base5. Sill6. Dike7. Layers of ash emitted by the volcano8. Flank| 9. Layers of lava emitted by the volcano10. Throat11. Parasitic cone12. Lava flow13. Vent14. Crater15...