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Progress in Earth and Planetary Science
Fig. 10 | Progress in Earth and Planetary Science

Fig. 10

From: Imaging crustal features and Moho depths through enhancements and inversion of gravity data from the Philippine island arc system

Fig. 10

a Horizontal (at 3, 5, and 7 km depths) and b vertical slices at the Y-axis (at 2, 10, 20, 30, 40, and 50 km distances from the southern edge of the map) of the Cagayan Valley Basin’s (CV) 3-D density contrast model. The c horizontal and d vertical slices at the Y-axis of the 3-D density contrast model of the Central Luzon Basin (CL) present broader and deeper, and negative density contrast zones. Coordinates (a, c) are in WGS 84/UTM Zone51 N (km). The comparison of the geological cross sections (upper) and density contrast model (× 1.5 vertical exaggeration) resulting from the 3-D inversion (lower) are presented for the e CV and f CL. KPG = Cretaceous–Paleogene, LM = Lower Neogene, UN = Upper Neogene, OLM = Oligocene–Lower Miocene, MM = Middle Miocene, UM = Upper Miocene, PP = Plio–Pleistocene. The geological cross sections are modified from Tamesis (1981), and the locations of the maps and section lines are shown in Fig. 2

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