Origin and Age of Magmatism in the Northern Philippine Sea Basins

[1 ]Geological Survey of Japan/AIST Tsukuba Japan

[2 ]Japan Agency for Marine‐Earth Science and Technology Yokosuka Japan

[3 ]Department of Geology and Paleontology National Museum of Nature and Science Tsukuba‐shi Japan

[4 ]School of Ocean and Earth Sciences University of Southampton Waterfront Campus Southampton UK

[5 ]Division of Natural System Kanazawa University Kanazawa Japan

[6 ]School of Marine Science and Technology Tokai University Shimizu Japan

[7 ]Ocean Research Laboratory Hydrographic and Oceanographic Department of Japan Tokyo Japan

[8 ]Department of Earth and Planetary Sciences Nagoya University Nagoya Japan

[9 ]Guangzhou Institute of Geochemistry The Chinese Academy of Sciences Guangzhou The People's Republic of China

[10 ]Department of Science and Technology Philippine Nuclear Research Institute Quezon City Philippines

[11 ]Institute for Integrated Radiation and Nuclear Science Kyoto University Kumatori Japan