Dr. John Dale Dianala, along with his University Research Associate (URA) Ms. Jed Ruzziel Santiago, conducted reconnaissance fieldwork last August 14 - 20, 2023 in Zamboanga del Sur and Zamboanga del Norte. The project entitled “Active faulting and earthquake potential of the Sindangan-Cotabato Fault” is funded by the Office of the Vice Chancellor for Research and Development (OVCRD) Ph.D. Incentive Awards (PhDIA).
The objectives during this fieldwork were to inspect roadside exposures of rocks to identify signs of active tectonic faulting, looking for signs of fault movement on paved roads and nearby structures that pass through the fault, and identify potential sites for paleoseismic trenching in the future. Potential sites for paleoseismic trenching were identified in the municipality of Dumingag, Zamboanga del Sur. The team then traversed the fault through primary roads to the municipalities of Siayan, Sindanga, and Jose Dalman, Zamboanga del Norte.
Outcrop along the Sindangan - Dipolog Rd
(left) Courtesy call with the mayor and executive secretary of Dumingag (right) Municipalities traversed by the Sindangan - Cotabato Fault