Tectonic Evolution of the Southern Negros Geothermal Field and Implications for the Development of Fractured Geothermal Systems

Figure 10

Displacement vector model of a northward propagating Yupisan Fault. Stereonet in the upper left shows the orientation of the Yupisan Fault segments discussed in-text. The table below it lists the amount of cumulative displacement per time for each fault segment, where a negative strike-slip displacement refers to sinistral movement along that fault segment. The boxes on the right show the propagation of the Yupisan Fault from time 1 to time 5. Each fault segment is represented in green whilst the red boxes connected to it are the projected subsurface plane. Displacement vectors are shown as the black arrows. The green E-W and NW-SE lines at the centre of each box represent the Puhagan Fault and some of the key structures within SNGF. Shown in the final box is the general rotation of the blocks for the footwall and hanging wall of the Yupisan Fault, where the CDN volcano and SNGF are on the footwall.