Leo T. Armada, Ph.D.

Assistant Professor


Position/Designation

Assistant Professor

Educational Background

PhD (2015)
National Central University, Taiwan

MS Geology (2009)
University of the Philippines

BS Geology (2006)
University of the Philippines

Research Interests

Specialization: Marine Geophysics (Seismic Reflection, Gravity, Magnetics, Electrical Resistivity/Induced Polarization)

Other research interests: Tectonics, Geohazards, Petroleum exploration (gas hydrates), Mineral exploration

Selected Publications

Cuevas, J. G., Cari, J. E. E., Principe, J. A., Tamondong, A. M., Dimalanta, C. B., & Armada, L. T., 2026. Assessment of Groundwater Potential in North-Central Palawan using Remote Sensing and Geophysical Analysis of Fractured Basement Aquifers. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences,https://doi.org/10.5194/isprs-annals-x-5-w4-2025-197-2026.

Dimalanta, C. B., Pasco, J. A., Ausejo, J. M., Armada, L. T., Manalo, P. C., & Yumul, G. P., 2025. Regional geology of the Bangui Formation: insights offered by sedimentary geochemistry into the early evolution of an island arc. Geoscience Letters, https://doi.org/10.1186/s40562-025-00425-2 

Yumul, G. P., Gabo-Ratio, J. A., Jumawan, F. T., Pacyaya, J. B. S., Dimalanta, C. B., & Armada, L. T. , 2025. Cagayan Valley Basin, North Luzon, Philippines: subduction, rotation and rift product. Geoscience Letters, https://doi.org/10.1186/s40562-025-00435-0.

Parcutela, N. E., Austria, R. S., Dimalanta, C. B., Valera, G. T. V., Gabo-Ratio, J. A. S., Payot, B. D., Armada, L. T., Sangalang, K. J. F., Yumul Jr., G. P., 2023. Enhanced arc magmatic productivity of the Western Pacific island arcs deduced from gravity-derived arc crustal growth rates. Frontiers in Earth Science, https://doi.org/10.3389/feart.2023.1107833

Austria, R.SP., Armada, L.T., Parcutela, N.E., Dimalanta, C.B., Payot, B.D., Valera, G.T.V., Reyes, E.M.L., Yumul, G.P, 2023. The Macolod Corridor (Philippines)–A passive rift compensated by ponded magmas?. Tectonophysics, https://doi.org/10.1016/j.tecto.2023.229965.

Maglalang, E.J.M., Armada, L.T., Santos, M.C., Sayen, K.F., Dimalanta, C.B., Hsu, S.-K., Yumul, G.P., Jr., 2023. Bottom simulating reflectors in the Manila Trench Forearc and its implications on the occurrence of gas hydrates in the region. Marine and Petroleum Geology, https://doi.org/10.1016/j.marpetgeo.2023.106538.

Austria, R. S. P., Parcutela, N. E., Reyes, E. M. L., Armada, L. T., Dimalanta, C. B., Yumul, G. P., Jr., 2022. Magnetic field characterization of Macolod Corridor (Luzon,Philippines): New perspectives on rifting in a volcanic arc setting. Tectonophysics, https://doi.org/10.1016/j.tecto.2021.229179.

Parcutela, N. E., Austria, R. S. P., Dimalanta, C. B., Armada, L. T., Yumul, G. P. Jr., 2022. Arc-crustal compression and its effects on the underlying mantle geometry as elucidated from the potential field signatures of the buckled Cretaceous Cebu lithosphere, Philippines. Tectonophysics, https://doi.org/10.1016/j.tecto.2022.229341.

Parcutela, N. E., Dimalanta, C. B., Armada, L. T., Austria, R. S., Gabo-Ratio, J. A., and Yumul, G. P., 2022. Band processing of Landsat 8-OLI multi-spectral images as a tool for delineating alteration zones associated with porphyry prospects: A case from Suyoc, Benguet, Philippines. IOP Conference Series: Earth and Environmental Science, Volume 1071, Page 012022.

Arellano, C.J.J., Armada, L.T., Dimalanta, C.B., Queano, K. L., , Andal, E.S., Yumul, G.P. Jr., 2021. Interpretation of ground magnetic data in Suyoc, Mankayan Mineral District, Philippines. Resource Geology,  https://doi.org/10.1111/rge.12270.

Parcutela, N. E., Dimalanta, C.B., Armada, L. T., Yumul, G. P., Jr., 2020. PHILCRUST3.0: New constraints in crustal growth rate computations for the Philippine arc. Journal of Asian Earth Sciences: X, https://doi.org/10.1016/j.jaesx.2020.100032

Armada, L. T., Dimalanta, C., Parcutela, N., Austria, R., Padrones, J., Payot, B., Queaño, K., and Yumul, G. Jr., 2020. Bouguer Anomaly of Central Cebu, Philippines. Journal of Maps, https://doi.org/10.1080/17445647.2020.1791270

Armada, L. T., Hsu, S., Dimalanta C. B., Yumul, G. P., Doo W., Yeh, Y., 2020. Forearc structures and deformation along the Manila Trench. Journal of Asian Earth Sciences: X, https://doi.org/10.1016/j.jaesx.2020.100036

Yumul, G.P.Jr., ARMADA, L.T., Gabo-Ratio, J.A., Dimalanta, C.B. and Austria, R.S.P. 2020. Subduction with arrested volcanism: Compressional regime in volcanic arc gap formation along east Mindanao, Philippines. Journal of Asian Earth Sciences: X, https://doi.org/10.1016/j.jaesx.2020.100030 (Open Access).


Yumul, G.P.Jr., Dimalanta, C.B., Gabo-Ratio, Queaño, K.L., ARMADA, L.T., Padrones, J.T., Faustino-Eslava, D.V., Payot, B.D. and Marquez, E.J. 2020. Mesozoic rock suites along western Philippines: Exposed proto-South China Sea fragments? Journal of Asian Earth Sciences: X, https://doi.org/10.1016/j.jaesx.2020.100031 (Open Access).


Yumul, G.P.Jr., Dimalanta, C.B., Gabo-Ratio, J.A.S., ARMADA, L.T., Queaño, K.L. and Jabagat, K.D. 2020. Mineralization parameters and exploration targeting for gold-copper deposits in the Baguio (Luzon) and Pacific Cordillera (Mindanao) Mineral Districts, Philippines: A review. Journal of Asian Earth Sciences 191, 104232. https://doi.org/10.1016/j.jseaes.2020.104232.


Yumul, G.P.Jr., Dimalanta, C.B., Salapare, R.C., Queaño, K.L., Faustino-Eslava, D.V., Marquez, E.J., Ramos, N.T., Payot, B.D., Guotana, J.M.R., Gabo-Ratio, J.A.S., ARMADA, L.T., Padrones, J.T., Ishida, K. and Suzuki, S. 2020. Slab rollback and microcontinent subduction in the evolution of the Zambales Ophiolite Complex (Philippines): A review. Geoscience Frontiers 11, 23-36. https://doi.org/10.1016/j.gsf.2018.12.008 (Open Access).


Doo, W. B., Hsu, S.K., ARMADA, L.T., 2015. Philippine Island Arc System Tectonic Features Inferred from Magnetic Data Analysis. Terrestrial Atmospheric and Oceanic Sciences, 26 (6), doi: 10.3319/TAO.2015.05.11.04(TC).


Doo, W. B., Hsu, S.K., ARMADA, L.T., 2015. New magnetic anomaly map of East Asia with some preliminary tectonic interpretations. Terrestrial Atmospheric and Oceanic Sciences, 26 (1), 73-81, doi: 10.3319/TAO.2014.08.19.07(GRT).


ARMADA, L.T., Hsu, S.-K., Ku, C.-Y., Doo, W.-B., Wu, W.-N., Dimalanta, C.B., Yumul, G.P. Jr., 2012. Possible northward extension of the Philippine Fault Zone offshore Luzon Island (Philippines), Marine Geophysical Research, 33 (4): 369-377, doi: 10.1007/s11001-013-9169-5.


ARMADA, L.T., Dimalanta, C.B., Yumul, G.P.Jr., Tamayo, R.A., Jr., 2009. Georesistivity Signature of Crystalline Rocks in the Romblon Island Group, Philippines. Philippine Journal of Science, 138 (2): 191-204, ISSN 0031 – 7683.

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