Lubang-Verde Passage fault system

The Lubang-Verde Passage fault system is a major strike-slip fault system located offshore between the Batangas and Mindoro Island in the Philippines.^[1]

Background

The fault follows the northwest-southeast alignment of Verde and Lubang islands and is primarily considered a left-lateral fault, meaning the two sides of the fault move horizontally past each other in opposite directions. This geological feature is associated with seismic activity, giving rise to earthquakes of varying magnitudes. Notably, on July 24, 2021, the fault was responsible for the Calatagan earthquake, which registered a magnitude of 6.6. The region's tectonic dynamics, marked by the lateral motion along this fault, contribute to the occurrence of significant seismic events such as the mentioned earthquake.^[2][3]

References

1. "Figure 2 - Seismotectonics of the July 24, 2021, magnitude-6.6 earthquake of Calatagan, Batangas, Philippines. Among the active strike-slip faults include the west/northwest-striking sinistral Lubang-Verde Passage Fault, and the north/northwest-striking dextral Aglubang River Fault on Mindoro Island. Located to the northeast of the Calatagan earthquake epicenter is the Macolod Corridor, a northeast-trending structural depression that hosts numerous active volcanic centers including Taal Volcano. Credit: Aurelio, Lagmay, Escudero and Catugas". Temblor.net. 2021-07-27. Retrieved 2024-01-25.
2. "INTERNATIONAL SOCIETY FOR SOIL MECHANICS AND GEOTECHNICAL ENGINEERING" (PDF). issmge.org. Retrieved 4 February 2024.
3. Sarmiento, Keanu Jershon S.; Aurelio, Mario A.; Flores, Paul Caesar M.; Carrillo, Anne Drew V.; Marfito, Bryan J.; Abigania, Maria Isabel T.; Daag, Arturo S.; Siringan, Fernando P. (2022). "Seafloor Structures and Static Stress Changes Associated With Two Recent Earthquakes in Offshore Southern Batangas, Philippines". Frontiers in Earth Science. 9: 1416. Bibcode:2022FrEaS...9.1416S. doi:10.3389/feart.2021.801670. ISSN 2296-6463.