Masaraga
Encyclopedia
Mount Masaraga is an extinct stratovolcano
, located in Ligao City
in the province
of Albay
, in the Bicol
region
, on Luzon
Island, in the Philippines
, at latitude 13.32°N (13°20'N), longitude 123.60°E (123°35'E).
. It is adjacent and the closest to the perfect cone of Mayon Volcano
.
as reported by the Global Volcanism Program
. Thick lava flows from that period are present on the flanks of Mount Masaraga, an understudied volcano in the Philippines.
trending to rhyolite
. Tectonically, Masaraga is part of the Bicol Volcanic Chain of volcanoes and part of the Pacific ring of fire
.
(PHIVOLCS) lists the mountain as one of the inactive volcano
of the Philippines.
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...
, located in Ligao City
Ligao City
Ligao City is a 4th class city in the province of Albay, Philippines. According to the 2007 census, it has a population of 101,179 people in 17,031 households. Ligao City is strategically located in the heart of the Third District of Albay...
in the province
Provinces 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 Albay
Albay
Albay is a province of the Philippines located in the Bicol Region in Luzon. Its capital is Legazpi City and the province borders Camarines Sur to the north and Sorsogon to the south. Also to the northeast is Lagonoy Gulf....
, in the Bicol
Bicol Region
The Bicol Region or Bicolandia is one of the 17 regions of the Philippines. Its regional center is Legazpi City...
region
Regions of the Philippines
In the Philippines, regions are administrative divisions that serve primarily to organize the provinces of the country for administrative convenience. Currently, the archipelagic republic of the Philippines is divided into 17 regions...
, on Luzon
Luzon
Luzon is the largest island in the Philippines. It is located in the northernmost region of the archipelago, and is also the name for one of the three primary island groups in the country centered on the Island of Luzon...
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...
, at latitude 13.32°N (13°20'N), longitude 123.60°E (123°35'E).
Physical features
Mount Masaraga is a forested, sharp-topped, mountain with an elevation of 1328 metres (4,357 feet) aslAbove mean sea level
The term above mean sea level refers to the elevation or altitude of any object, relative to the average sea level datum. AMSL is used extensively in radio by engineers to determine the coverage area a station will be able to reach...
. It is adjacent and the closest to the perfect cone of Mayon Volcano
Mayon Volcano
Mayon Volcano, also known as Mount Mayon, is an active volcano in the province of Albay, on the island of Luzon in the Philippines. Renowned as the "perfect cone" because of its almost symmetric conical shape, Mayon forms the northern boundary of Legazpi City, the largest city in terms of...
.
Eruptions
There are no historical eruptions from the volcano with the last eruptive activity dated as HoloceneHolocene
The Holocene is a geological epoch which began at the end of the Pleistocene and continues to the present. The Holocene is part of the Quaternary period. Its name comes from the Greek words and , meaning "entirely recent"...
as reported by the Global Volcanism Program
Global Volcanism Program
The Smithsonian Institution's Global Volcanism Program documents Earth's volcanoes and their eruptive history over the past 10,000 years. The GVP reports on current eruptions from around the world as well as maintaining a database repository on active volcanoes and their eruptions. In this way, a...
. Thick lava flows from that period are present on the flanks of Mount Masaraga, an understudied volcano in the Philippines.
Geology
Rock type found on the mountain is andesiteAndesite
Andesite is an extrusive igneous, volcanic rock, of intermediate composition, with aphanitic to porphyritic texture. In a general sense, it is the intermediate type between basalt and dacite. The mineral assemblage is typically dominated by plagioclase plus pyroxene and/or hornblende. Magnetite,...
trending to rhyolite
Rhyolite
This page is about a volcanic rock. For the ghost town see Rhyolite, Nevada, and for the satellite system, see Rhyolite/Aquacade.Rhyolite is an igneous, volcanic rock, of felsic composition . It may have any texture from glassy to aphanitic to porphyritic...
. Tectonically, Masaraga is part of the Bicol Volcanic Chain of volcanoes and 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...
.
Listings
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...
(PHIVOLCS) lists the mountain as one of the inactive volcano
Inactive volcanoes of the Philippines
This is a list of inactive volcanoes in the Philippines. The Philippine Institute of Volcanology and Seismology currently lists 355 volcanoes in the Philippines as inactive. The Smithsonian Institution's Global Volcanism Program does not list inactive volcanoes...
of the Philippines.
External links
- Philippine Institute of Volcanology and Seismology (PHIVOLCS), Inactive Volcanoes page
- Smithsonian Institution's Global Volcanism Program, Masaraga page
See also
- List of volcanoes in the Philippines
- Pacific ring of firePacific Ring of FireThe 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...
- 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...
- Mayon VolcanoMayon VolcanoMayon Volcano, also known as Mount Mayon, is an active volcano in the province of Albay, on the island of Luzon in the Philippines. Renowned as the "perfect cone" because of its almost symmetric conical shape, Mayon forms the northern boundary of Legazpi City, the largest city in terms of...