Corregidor Caldera

Corregidor Caldera
Corregidor and Caballo Islands are the rim of the caldera
Elevation	173 m (568 ft)
Prominence	173 m (568 ft)
Listing	Potentially-active volcanoes of the Philippines
Location
Corregidor Caldera Map of the Philippines
Location	Entrance to Manila Bay
Coordinates	14°22′39″N 120°36′33″E / 14.3775°N 120.60917°E / 14.3775; 120.60917Coordinates: 14°22′39″N 120°36′33″E / 14.3775°N 120.60917°E / 14.3775; 120.60917
Geology
Type	Caldera
Volcanic arc/belt	Western Bataan Lineament
Last eruption	Unknown

Corregidor is an extinct volcanic caldera located at the entrance to Manila Bay in the Republic of the Philippines. The caldera is composed of the islands of Corregidor and Caballo in the province of Cavite^[1], which are believed to be the exposed rim of the volcano.

Physical Features

Corregidor is classified by Philippine volcanologists as a potentially-active caldera with a rim elevation of 173 metres (568 ft) and a base diameter of 4 kilometres (2.5 mi).^[2]

Predominant rock type is dacite with a 72.68% silica dioxide content.^[2]

Eruption

Last eruption was about 1 million years (1.10 +/-0.09 Ma) BP based on the age of deposits.^[2]

Listings

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) lists the volcano as potentially active.^[2] The reason for this listing rather than inactive, is not disclosed on the PHIVOLCS website listing.

Corregidor is not listed with the Smithsonian Institution's Global Volcanism Program as it has no known eruptions in the Holocene epoch (around 10,000 years ago).^[3]

See also

• List of volcanoes in the Philippines

References

1. ^ "Political Districts of Cavite". Provincial Government of Cavite Official Website. Retrieved on 2011-10-18.
2. ^ ^{a b c d} "Corregidor". Philippine Institute of Volcanology and Seismology (PHIVOLCS). http://volcano.phivolcs.dost.gov.ph/update_VMEPD/Volcano/VolcanoList/corregidor.htm. 
3. ^ "Volcanoes of the Philippines and Southeast Asia". Global Volcanism Program. Smithsonian Institution. http://www.volcano.si.edu/world/region.cfm?rnum=07.