Busuanga Island

Busuanga, is the largest island in the Calamian Group of islands in the province of Palawan in the Philippines. Busuanga Island is the second largest island in the province after Palawan island itself. The island is located halfway between the islands of Mindoro and Palawan with the South China Sea located to the west and the Sulu Sea to the southeast. South of the island are the two other major islands of the Calamian Group: Culion Island and Coron Island. The western third of the island is under the municipality of Busuanga and the eastern two-thirds belong to the municipality of Coron.

For the municipality, see Busuanga, Palawan.
Busuanga Island
Map showing the Calamian Group (in red) and Busuanga Island (in maroon)
Busuanga Island is located in Palawan
Busuanga Island
Busuanga Island
Location within the Palawan
Geography
LocationMindoro Strait
Coordinates12°8′42″N 120°5′41″E
ArchipelagoCalamianes
Adjacent to
Area890 km2 (340 sq mi)
Highest elevation2,034 ft (620 m)
Highest pointMount Dalara
Administration
RegionMimaropa
ProvincePalawan
Municipalities
Demographics
Population73,849 (as of 2015)
Additional information

Busuanga Island is known as a recreational diving location due to World War II Japanese wrecks that were sunk by American navy bombings in Coron Bay, a natural anchorage near the town center of Coron, on September 24, 1944.[1]

Geology

Part of the North Palawan Block, Busuanga Island consists mainly of the Liminangcong Formation, a Permian to Late Jurassic chert. This chert forms the distinguishing mountain ranges, with the Middle-Late Jurassic Guinlo Formation clastics forming the valleys on Busuanga.[2] Busuanga was known for its tabular manganese deposits found within the chert sequence, 1 meter (3 ft 3 in) thick and extending laterally up to 200 meters (660 ft). Braunite is the common manganese mineral type found in the ore.[3][4][5]

  • An outcrop of deformed Liminangcong chert along the Coron-Busuanga road near the Marina del Sol yacht club
    An outcrop of deformed Liminangcong chert along the Coron-Busuanga road near the Marina del Sol yacht club
  • Close-up view of the folded layers of Liminangcong chert in Busuanga
    Close-up view of the folded layers of Liminangcong chert in Busuanga
  • View of Mt. Dalara, the tallest mountain in Busuanga Island from Mt. Tapyas in Coron Town
    View of Mt. Dalara, the tallest mountain in Busuanga Island from Mt. Tapyas in Coron Town
  • Another outcrop of heavily-deformed Liminangcong chert in Guadalupe, Coron
    Another outcrop of heavily-deformed Liminangcong chert in Guadalupe, Coron

References
  1. "Wrecks of Coron Bay". Dive Magazine. 16 November 2021. Retrieved 2 June 2022.
  2. Zamoras, Lawrence; Matsuoka, Atsushi (January 2001). "The Malampaya Sound Group in the Calamian Islands, North Palawan Block (Philippines)". Retrieved 2 June 2022.
  3. Sorem, Ronald (1958). "Origin of manganese deposits of Busuanga Island, Philippines, USGS Open-File Report 58-98". USGS Publications Warehouse. USGS. Retrieved 2 June 2022.
  4. Marquez, Edanjarlo; Aitchison, Jonathan; Zamoras, Lawrence (2007). "Upper Permian to Middle Jurassic radiolarian assemblages of Busuanga and surrounding islands, Palawan, Philippines". Radiolaria. Springer. pp. 101–125. doi:10.1007/978-3-7643-8344-2_8. ISBN 978-3-7643-8343-5. S2CID 129846423. Retrieved 2 June 2022.
  5. Wolfart, Reinhard; Cepak, Pavel; Gramann, Franz; Kemper, Edwin; Porth, Hans (2 April 1986). "Stratigraphy of Palawan Island, Philippines". Newsletters on Stratigraphy. Schweizerbart science publishers. Retrieved 2 June 2022.
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