大洋钻探与西太平洋构造

菲律宾海的深海钻探证了弧间扩张和残留弧形模式。小笠原－马里亚纳弧前区的钻探表明，俯冲带初生时伴着海底扩张，形成了异常宽阔的火山活动带。有许多出上蛇绿岩形成于俯冲带初生时的海底扩张环境。日本海的钻探揭示了日本边缘盆地的打开和关闭，新近形成的日本海东缘板边界对华北地区的构造有重要制约作用，中国东海和南海占有独特的构造位置，布置大洋钻探意义重大。文章还强调了中国地质学家从全球地质学的观点研究问题（而不仅

OCEAN DRILLING PROGRAM AND TECTONICS OF THE WESTERN PACIFIC REGION

The model of the inter-arc spreading and the remnant arc development are verified bythe deep-sea drilling in the Philippine Sea. The driling in the Bonin-Mariana forearc showsthat the volcanic active zone, which was anomalously large, occurred during the juvenilephase of subduction with sea-floor spreading, Lots of ophiolite found on continent were de-veloped in the setting of sea-floor spreading in the juvenile phase of subduction. Thedrilling in the Japan Sea reveals processes of opening and closing of the margin basin ofJapan Sea. The recent plate boundary at the east margin of Japan Sea imposes importantrestriction on tectonics in North China. The ocean drilling in the East China Sea and SouthChina Sea will be of great signification because of their distinctive tectonic positions, Thepresent paper emphasizes the significance of approaches to geological problems from globalview instead of local one for Chinese geologists.