... cautioned to stay clear of weakened structures and to be alert to any abnormal behavior of the Sibuyan Sea (possibility of a tidal wave). "The earthquake was considered significant by the Weather Bureau 'because it occurred on the same fault zone where the epicenter of the maior earthquake of Alabat in 1937...

....~IOLOGICAL SOCIETY OF AMERICA Region Probable Number of tsunamis Doubtful Southern Philippines Moro Gulf and Sulu Archipelago 41 Eastern Sulu Sea 2 Sibuyan Sea 22 Visayan Sea 11 Mindanao Sea 1 Western Luzon, China, and Taiwan 10 4 Manila Bay Western Luzon 12 Northwestern Luzon 4 China 3 Taiwan 22 11 Eastern...

... of the conditions. For instance, the area of the Manila plain, a hundred miles in diameter, is subsiding. An area of similar extent, that of the Sibuyan Sea, closely adjacent on the south, is rising. Similar diversities exist elsewhere in the Archipelago. The condition of the foundations supporting the crust...

...Figure A10. Map of the Philippines showing the trace of the Philippine fault as given by Allen (1962) , the Sibuyan Sea fault according to Beavan et al. (2001) , and the Verde Passage and Legaspi faults from Rangin et al. (1999) . All rates are based on geodetic measurements ( Beavan et al...

... along their eastern bases, and these are also hinged in the re-entrant east of Formosa. The Philippine Archipelago is set off from the Asiatic Continent by the broad deep basin of the South China Sea on the west. On the east, the platform on which the archipelago rests is bounded by the great north...

... to a recent model by Hall (2002) this continuous arc could be related to eastward subduction of the Proto-South China Sea plate. An interesting feature of this control area is the relationship of porphyry copper deposits not only with typical diorite to quartz diorite intrusions but also with alkaline rocks...