Logo link to homepage

Malinao

Photo of this volcano
  • Philippines
  • Philippines and SE Asia
  • Stratovolcano
  • Pleistocene
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 13.416°N
  • 123.608°E

  • 1548 m
    5079 ft

  • 273801
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Bulletin Report: August 1980 (SEAN 05:08) Citation IconCite this Report

Small phreatic explosion

A small phreatic explosion took place on 29 July from one of the pools of hot water in the Naglagbong thermal area, Tiwi geothermal field, at the E foot of Malinao. The explosion ejected hot mud and blocks up to 2/3 m in diameter. The ejecta reached heights of 150 m and fell as much as 350 m from the vent. One person received second-degree burns and two buildings were damaged, one a COMVOL seismic station.

Before the explosion the pool was 15 m in diameter and 4.3 m deep, with clear emerald-green water at a temperature of 85°C. As early as 6 July, the seismograph recorded unusual microseisms. Two hours before the explosion, geysering of muddy water was observed.

[The minor explosion from the Naglabong thermal area that ejected blocks in 1980 was probably due to water drawdown during development of the Tiwi geothermal field (Newhall, 1994, pers. comm.).]

Information Contacts: O. Peña, COMVOL, Quezon City.

The Global Volcanism Program has no Weekly Reports available for Malinao.

Bulletin Reports - Index

Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

04/1970 (CSLP 35-70) Reports of tremors and rumblings

08/1980 (SEAN 05:08) Small phreatic explosion




Information is preliminary and subject to change. All times are local (unless otherwise noted)


April 1970 (CSLP 35-70)

Reports of tremors and rumblings

Card 0919 (27 April 1970) Reports of tremors and rumblings

Father Hennessey reports by cable that there is a 'report (that) Mount Malinao, an extinct volcano 20 km NNW of Mayon, is becoming active.' Earth tremors 'ranging from Intensity 1 to 5' have occurred and 'deep rumblings' have been heard.

W. Ward cabled the following: 'Mount Malinao acting up, no eruption since prehistoric times.'

Malinao is located in southeastern Luzon. It is a stratovolcano with crescentic center of which the northern wall is failing. The inner crater walls are bare. There are two hot wells, Jigabo and Naglabong. At the latter well, the fumaroles had a highest temperature of 108°C in 1903.

Information Contacts: Rev. J.J. Hennessey, Manila Observatory, Manila, Philippines; W.T.T. Ward, U.S. 13th Air Force Historical Office, Clark Air Force Base, Manila, Philippines.


August 1980 (SEAN 05:08) Citation IconCite this Report

Small phreatic explosion

A small phreatic explosion took place on 29 July from one of the pools of hot water in the Naglagbong thermal area, Tiwi geothermal field, at the E foot of Malinao. The explosion ejected hot mud and blocks up to 2/3 m in diameter. The ejecta reached heights of 150 m and fell as much as 350 m from the vent. One person received second-degree burns and two buildings were damaged, one a COMVOL seismic station.

Before the explosion the pool was 15 m in diameter and 4.3 m deep, with clear emerald-green water at a temperature of 85°C. As early as 6 July, the seismograph recorded unusual microseisms. Two hours before the explosion, geysering of muddy water was observed.

[The minor explosion from the Naglabong thermal area that ejected blocks in 1980 was probably due to water drawdown during development of the Tiwi geothermal field (Newhall, 1994, pers. comm.).]

Information Contacts: O. Peña, COMVOL, Quezon City.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Eruptive History

The Global Volcanism Program is not aware of any Holocene eruptions from Malinao. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Malinao page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

Deformation History

There is no Deformation History data available for Malinao.

Emission History

There is no Emissions History data available for Malinao.

Photo Gallery

The Global Volcanism Program has no photographs available for Malinao.

GVP Map Holdings

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.

Title: Philippines
Publisher: Apa Maps - Nelles Verlag, W Germany
Country: Philippines
Year: 1984
Map Type: Geographic
Scale: 1:1,500
Map of Philippines
Title: Phillipines
Publisher: DMA Aerospace Center
Country: Philippines
Year: 1984
Series: ONC
Map Type: Topographic
Scale: 1:1,000,000
Map of Phillipines
Title: Philippine Islands
Publisher: DMA Aerospace Center
Country: Philippines
Year: 1982
Series: TPC
Map Type: Topographic
Scale: 1:500,000
Map of Philippine Islands
Title: Castilla, Sorsogon
Publisher: BTSM, Board of Technical Surveys and Maps
Country: Philippines
Year: 1980
Map Type: Topographic
Scale: 1:50,000
Map of Castilla, Sorsogon
Title: Manito, Albay
Publisher: Philippine Bureau of Coast & Geodetic Survey
Country: Philippines
Year: 1978
Map Type: Topographic
Scale: 1:50,000
Map of Manito, Albay
Title: Legaspi City
Publisher: US Army Map Service
Country: Philippines
Year: 1966
Series: S501
Map Type: Topographic
Scale: 1:250,000
Map of Legaspi City
Title: Manito, Luzon
Publisher: US Army Map Service (Far East)
Country: Philippines
Year: 1957
Series: S711
Map Type: Topographic
Scale: 1:50,000
Map of Manito, Luzon
Title: Gubat, Luzon
Publisher: US Army Map Service (Far East)
Country: Philippines
Year: 1956
Series: S711
Map Type: Topographic
Scale: 1:50,000
Map of Gubat, Luzon
Title: Legaspi City
Publisher: US Army Map Service
Country: Philippine Islands
Year: 1955
Series: AMS
Map Type: Topographic
Scale: 1:250,000
Map of Legaspi City
Title: Bulan
Publisher: US Army Map Service
Country: Philippine Islands
Year: 1955
Series: AMS
Map Type: Topographic
Scale: 1:250,000
Map of Bulan
Title: South Luzon
Publisher: US Army Map Service
Country: Philippine Islands
Year: 1944
Series: AMS
Map Type: Topographic
Scale: 1:1,000,000
Map of South Luzon
Title: Philippines South: Special Strategic Map
Publisher: US Army Map Service
Country: Philippines
Year: 1943
Series: AMS
Map Type: Topographic
Scale: 1:2,000,000
Map of Philippines South: Special Strategic Map
Title: Philippines North: Special Strategic Map
Publisher: US Army Map Service
Country: Philippines
Year: 1943
Series: AMS
Map Type: Topographic
Scale: 1:2,000,000
Map of Philippines North: Special Strategic Map
Smithsonian Sample Collections Database

There are no samples for Malinao in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites