Figure 2: Seismotectonic map of southwestern Luzon. This map shows the distribution of shallow to intermediate-depth earthquakes in the area. These earthquakes illuminate the complex tectonic setting. The focal mechanisms (earthquake beach balls) illustrate how the faults move during earthquakes. The blue line marked A-A’ denotes the location of the cross section shown in Figure 3. Data sources: Earthquake locations, focal mechanisms, and active faults and trenches from DOST-PHIVOLCS. Credit: Llamas et al., 2025, CC BY-NC-ND 4.0

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Figure 2: Seismotectonic map of southwestern Luzon. This map shows the distribution of shallow to intermediate-depth earthquakes in the area. These earthquakes illuminate the complex tectonic setting. The focal mechanisms (earthquake beach balls) illustrate how the faults move during earthquakes. The blue line marked A-A’ denotes the location of the cross section shown in Figure 3. Data sources: Earthquake locations, focal mechanisms, and active faults and trenches from DOST-PHIVOLCS. Credit: Llamas et al., 2025, CC BY-NC-ND 4.0

Figure 2: Seismotectonic map of southwestern Luzon. This map shows the distribution of shallow to intermediate-depth earthquakes in the area. These earthquakes illuminate the complex tectonic setting. The focal mechanisms (earthquake beach balls) illustrate how the faults move during earthquakes. The blue line marked A-A’ denotes the location of the cross section shown in Figure 3. Data sources: Earthquake locations, focal mechanisms, and active faults and trenches from DOST-PHIVOLCS. Credit: Llamas et al., 2025, CC BY-NC-ND 4.0

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