Mount Labo, is a potentially active stratovolcano in the

province A province is almost always an administrative division within a country or state. The term derives from the ancient Roman '' provincia'', which was the major territorial and administrative unit of the Roman Empire's territorial possessions ou ...

Camarines Norte Camarines Norte ( bcl, Amihanan na Camarines; fil, Hilagang Camarines), officially the Province of Camarines Norte, is a province in the Philippines located in the Bicol Region in Luzon. Its capital is Daet. The province borders Quezon to the w ...

, in the

Bicol Region Bicol, known formally as the Bicol Region or colloquially as Bicolandia ( bcl, Rehiyon kan Bikol; Rinconada Bikol: ''Rehiyon ka Bikol''; Waray Sorsogon, Masbateño: ''Rehiyon san Bikol''; tl, Rehiyon ng Bikol), is an administrative region of ...

(Region V), on

Luzon Luzon (; ) is the largest and most populous island in the Philippines. Located in the northern portion of the Philippines archipelago, it is the economic and political center of the nation, being home to the country's capital city, Manila, as ...

Island, in the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

. It is located at the northwest end of the

Bicol Peninsula Bicol, known formally as the Bicol Region or colloquially as Bicolandia ( bcl, Rehiyon kan Bikol; Rinconada Bikol: ''Rehiyon ka Bikol''; Waray Sorsogon, Masbateño: ''Rehiyon san Bikol''; tl, Rehiyon ng Bikol), is an administrative region of ...

Physical features

Labo is a forested andesitic stratovolcano, surrounded by numerous

andesitic Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predomin ...

dacitic Dacite () is a volcanic rock formed by rapid solidification of lava that is high in silica and low in alkali metal oxides. It has a fine-grained (aphanitic) to porphyritic texture and is intermediate in composition between andesite and rhyol ...

satellite lava domes. It has an elevation of asl. Base diameter of this

complex volcano A complex volcano, also called a compound volcano or a volcanic complex, is a mixed landform consisting of related volcanic centers and their associated lava flows and pyroclastic rock. They may form due to changes in eruptive habit or in t ...

is . Labo is thermally active with both warm and

hot spring A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by c ...

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

hornblende 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. Hornblende minerals are common in igneous and metamorphic rock ...

- biotite

andesite Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predo ...

dacite Dacite () is a volcanic rock formed by rapid solidification of lava that is high in silica and low in alkali metal oxides. It has a fine-grained (aphanitic) to porphyritic texture and is intermediate in composition between andesite and rhyolite ...

. Tectonically, Labo is part of the Bicol Volcanic belt.

Listings

The Smithsonian Institution's Global Volcanism Program lists Labo as

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in ...

Philippine Institute of Volcanology and Seismology The Philippine Institute of Volcanology and Seismology (PHIVOLCS, ; tl, Surian ng Pilipinas sa Bulkanolohiya at Sismolohiya) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and ...

(PHIVOLCS) lists Labo as ''Potentially Active''.

References

External links

Philippine Institute of Volcanology and Seismology (PHIVOLCS), Labo page (archived)
{{DEFAULTSORT:Labo Stratovolcanoes of the Philippines Subduction volcanoes Volcanoes of Luzon Mountains of the Philippines Landforms of Camarines Norte Potentially active volcanoes of the Philippines Pleistocene stratovolcanoes