Mount Labo
Encyclopedia
Mount Labo, is a potentially active stratovolcano
in the province
of Camarines Norte
, in Region V, on Luzon
Island, in the Philippines
.
It is located at the northwest end of the Bicol Peninsular at latitude 14.02°N (14°1'0"N), longitude 122.792°E (122°47'30"E).
s.
Labo has an elevation of 1544 metres asl
.
Base diameter of this compound volcano is 35 kilometres.
Labo is thermally activity with both warm and hot springs
.
The present edifice was formed beginning about 270,000 years ago, and flank lava dome emplacement took place from about 200,000 to about 40,000 years ago.
The latest activity from Mt Labo produced pyroclastic flows from the summit cone about 27,000 years ago.
There have been no eruptions since.
-biotite
andesite
to dacite
.
Tectonically, Labo it is part of the Bicol Volcanic belt.
Philippine Institute of Volcanology and Seismology
(PHIVOLCS) lists Labo as Potentially Active.
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...
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 Camarines Norte
Camarines Norte
Camarines Norte is a province of the Philippines located in the Bicol Region in Luzon. Its capital is Daet and the province borders Quezon to the west and Camarines Sur to the south.-Demographics:...
, in Region V, 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...
.
It is located at the northwest end of the Bicol Peninsular at latitude 14.02°N (14°1'0"N), longitude 122.792°E (122°47'30"E).
Physical features
Labo is a forested 1544 metre high andesitic stratovolcano, surrounded by numerous andesitic to dacitic satellite lava domeLava dome
|250px|thumb|right|Image of the [[rhyolitic]] lava dome of [[Chaitén Volcano]] during its 2008–2009 eruption.In volcanology, a lava dome is a roughly circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano...
s.
Labo has an elevation of 1544 metres asl
Above 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...
.
Base diameter of this compound volcano is 35 kilometres.
Labo is thermally activity with both warm and hot springs
Hot Springs
Hot Springs may refer to:* Hot Springs, Arkansas** Hot Springs National Park, Arkansas*Hot Springs, California**Hot Springs, Lassen County, California**Hot Springs, Modoc County, California**Hot Springs, Placer County, California...
.
Economic activities
Mount Labo has been the object of an extensive geothermal exploration program.Eruptions
Mid-Pleistocene eruptions beginning about 580,000 years ago formed lava domes on the northern side of the complex.The present edifice was formed beginning about 270,000 years ago, and flank lava dome emplacement took place from about 200,000 to about 40,000 years ago.
The latest activity from Mt Labo produced pyroclastic flows from the summit cone about 27,000 years ago.
There have been no eruptions since.
Geology
Rock type is predominantly hornblendeHornblende
Hornblende is a complex inosilicate series of minerals .It is not a recognized mineral in its own right, but the name is used as a general or field term, to refer to a dark amphibole....
-biotite
Biotite
Biotite is a common phyllosilicate mineral within the mica group, with the approximate chemical formula . More generally, it refers to the dark mica series, primarily a solid-solution series between the iron-endmember annite, and the magnesium-endmember phlogopite; more aluminous endmembers...
andesite
Andesite
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,...
to dacite
Dacite
Dacite is an igneous, volcanic rock. It has an aphanitic to porphyritic texture and is intermediate in composition between andesite and rhyolite. The relative proportions of feldspars and quartz in dacite, and in many other volcanic rocks, are illustrated in the QAPF diagram...
.
Tectonically, Labo it is part of the Bicol Volcanic belt.
Listings
The Smithsonian Institution's Global Volcanism Program lists Labo as Pleistocene - Hot Springs.Philippine Institute of Volcanology and Seismology
Philippine 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 Labo as Potentially Active.
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...
- 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...