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Mount Mandalagan is a
Elevation is 1885 metres (6,184 feet), with a base diameter of 26 kilometres.
Mandalagan is a deeply dissected
Mandalagan is part of the Negros Volcanic Belt.
Rock type is principally andesitic with some dacitic
A crater located near the center called "Tinagong Dagat", where hikers camp.
Philippine Institute of Volcanology and Seismology (PHIVOLCS) Mandalagan Page
* {{Authority control Volcanoes of Negros Island Potentially active volcanoes of the Philippines Stratovolcanoes of the Philippines Subduction volcanoes Landforms of Negros Occidental
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 ...
located at latitude 10.65° North (10°39'0"N), longitude 123.25° East (123°15'0"E), in the province
A province is an administrative division within a country or sovereign state, state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire, Roman Empire's territorial possessions ou ...
of Negros Occidental
Negros Occidental (; ), officially the Province of Negros Occidental (; ), is a Provinces of the Philippines, province in the Philippines located in the Negros, Negros Island. Its capital is the city of Bacolod, of which it is geographically s ...
, on the north of the island of Negros
Negros (, , ) is the fourth largest and third most populous island in the Philippines, with a total land area of . The coastal zone of the southern part of Negros is identified as a site of highest marine biodiversity importance in the Coral Tr ...
of the Philippines
The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
. It is located inside the Northern Negros Natural Park.
Mandalagan is a solfataric, fumarolic, potentially active stratovolcano
A stratovolcano, also known as a composite volcano, is a typically conical volcano built up by many alternating layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with ...
.
Mandalagan is also known as Nahigda nga Babayi or Lying Women for the Bacolodnons and Negrenses.
Physical Features
Elevation is 1885 metres (6,184 feet), with a base diameter of 26 kilometres.
Mandalagan is a deeply dissected 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 ...
, with a highly altered volcanic dome
In volcanology, a lava dome is a circular, mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruptions ...
.
Volcanic activity is reported to include seven volcanic centres, at least five craters and/or calderas up to 2 km in diameter, and a vigorous solfataric area at the highly altered volcanic dome
In volcanology, a lava dome is a circular, mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruptions ...
structure.
One solfataric area emits a high-temperature (106 degrees C) plume to 30 m height with a roaring noise like a high-pressure geothermal borehole.
Images
The Smithsonian listing has a satellite photograph of the general area.Geological Features
Mandalagan is part of the Negros Volcanic Belt.
Rock type is principally andesitic with some dacitic
A crater located near the center called "Tinagong Dagat", where hikers camp.
Eruption
The most recent eruption produced a thin basaltic lava flow, but it is not known when this is likely to have occurred.Listings
Philippine Institute of Volcanology and Seismology (PHIVOLCS) lists Mandalagan as potentially active. The Smithsonian Global Volcanism Program lists Mandalagan as fumarolic.See also
*List of active volcanoes in the Philippines
As of 2018, the Philippines has 24 volcanoes listed as Volcano#Active, active by the Philippine Institute of Volcanology and Seismology (PHIVOLCS). Twenty-one of these have had historical eruptions. The three exceptions are Cabalian, which is a ...
* List of potentially active volcanoes in the Philippines
*List of inactive volcanoes in the Philippines
This is a list of inactive volcanoes in the Philippines. Volcanoes with no record of eruptions are considered as extinct or inactive. Their physical form since their last activity has been altered by agents of weathering and erosion with the for ...
*Philippine Institute of Volcanology and Seismology
The Philippine Institute of Volcanology and Seismology (PHIVOLCS, ; ) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and tsunamis, as well as other specialized information and ...
*Volcano
A volcano is commonly defined as a vent or fissure in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.
On Earth, volcanoes are most oft ...
References
External links
Philippine Institute of Volcanology and Seismology (PHIVOLCS) Mandalagan Page
* {{Authority control Volcanoes of Negros Island Potentially active volcanoes of the Philippines Stratovolcanoes of the Philippines Subduction volcanoes Landforms of Negros Occidental