Fig. 6From: Imaging crustal features and Moho depths through enhancements and inversion of gravity data from the Philippine island arc systemUpward continued maps of Luzon Island at 5, 10, and 20 km representing minimum depths of a 2.5, b 5, and c 10 km, respectively. The magmatic belts separate Ilocos-Central Luzon Basin (ICL) and Cagayan Valley Basin (CB) along Central Cordillera (CC) (MGB 2010). c Very low-gravity anomaly zones (< 5mGal) indicate portions of the basins with thickest sediment accumulation (e.g., Tamesis 1976; Bachman and Lewis 1983)Back to article page