Pocdol Mountains
Encyclopedia
The Pocdol Mountains are a volcanic group
Volcanic group
A volcanic group is a collection of related volcanoes or volcanic landforms. Note that the term is also used in a different sense when it denotes a suite of associated rock strata largely of volcanic origin; see group for details.-Notable volcanic groups:-See also:*Complex...

 of stratovolcano
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...

s 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...

.

The range is also known as the Bacon-Manito Volcanic Group.

Location

The Pocdol Mountains form part of the boundary between the provinces
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....

 and Sorsogon
Sorsogon
Sorsogon is a province of the Philippines located in the Bicol Region; it is the southernmost province in Luzon and is subdivided into fourteen municipalities and one city. Its capital is Sorsogon City and borders the province of Albay to the north...

, in Region V, on the island of 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...

, in the Philippines.

The group is located south-east of Mayon
Mayon
Mayon may refer to:*Mayon, Cornwall*Mayon Volcano*In Tamil, Mayon is a name for Krishna....

 volcano, between Albay Gulf
Albay Gulf
Albay Gulf is a large gulf in the southern part of Luzon island, Philippines, at .The place has been one of the tourist spots in the province because of the frequent sightings of whale sharks in the coastal areas...

 and Saragon Bay, at latitude 13.05°N (13°3'0"N), longitude 123.958°E (123°57'30"E).

Physical features

The Pocdol Mountains have a triangular footprint of about 225 square kilometres (86.9 sq mi).

The highest point is reported as 1102 metres (3,615 ft) above sea level.

A 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...

 field that contains sulfataras and chloride hot springs, is reported to be located near the summit of the volcanic group.

The group is described by the Smithsonian Institution's Global Volcanism Program as fumarolic.

Geology

Several Pleistocene K-Ar dates
Potassium-argon dating
Potassium–argon dating or K–Ar dating is a radiometric dating method used in geochronology and archeology. It is based on measurement of the product of the radioactive decay of an isotope of potassium into argon . Potassium is a common element found in many materials, such as micas, clay minerals,...

 have been obtained from the volcanic complex. Most igneous rocks in the Pocdol Mountains consist of pyroxene andesites with minor amounts of dacite and basalts. The area is traversed by the San Vicente-Linao Fault, a splay of the Philippine Fault.

Volcanic cones in the western part of the complex are dissected, but those in the eastern part are morphologically youthful.

The volcanic area is the host of various geothermal systems collectively called the Bacon-Manito geothermal field.

Listings

The Global Volcanism Program lists the Pocdol Mountains as Fumarolic.

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 Pocdol Mountains as Inactive.

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 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...

  • Volcano
    Volcano
    2. 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 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...

  • Volcanic group
    Volcanic group
    A volcanic group is a collection of related volcanoes or volcanic landforms. Note that the term is also used in a different sense when it denotes a suite of associated rock strata largely of volcanic origin; see group for details.-Notable volcanic groups:-See also:*Complex...

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