| Title | Controlled Source Magnetotelluric (CSMT) Survey of Malabuyoc Geothermal Prospect, Cebu, Philippines |
|---|---|
| Authors | Rogelio A. del Rosario, Jr., Michael S. Pastor and Ruel T. Malapitan |
| Year | 2005 |
| Conference | World Geothermal Congress |
| Keywords | CSMT, Malabuyoc |
| Abstract | The Controlled Source Magnetotelluric (CSMT) survey conducted at Malabuyoc geothermal prospect aims at establishing the presence and extent of hot water to a medium depth of 300-500 meters for non-electrical applications of geothermal fluids. The resistivity anomalies in the prospect are largely controlled by geologic structure (faulted anticlinal structure). The Malabuyoc system is categorized as a basement aquifer beneath a sedimentary basin with the heated fluid probably originating at the center of the basin east of the survey area. The fluid is channeled along the Middle Diagonal and MontaÒeza River Faults (MRF) and emerged along the stretch of Montaneza River as warm seepages. The best site to drill for a well that could extract possible hot/warm water for spa resort development is the area bounded by steep resistivity gradient coincident with MRF. Possible hot water is at permeable karst aquifer located at depth between the -100 to -300 m below sea level (bsl). |