SeaMARC II, Seismic and Coring of the Western Solomon Sea Collision Zone

SeaMARC II，西所罗门海碰撞区的地震和取芯

• 批准号: 8918626
• 负责人: Alexander Shor
• 金额: $ 25.76万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-03-01 至 1993-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8918626&HistoricalAwards=false
• 关键词: SeaMARC; II; Seismic; Coring; Western

The Solomon Sea is a small ocean basin 1000 km north of the Great Barrier Reef of northeast Australia that is gradually disappearing as the Papuan Peninsula of eastern New Guinea collides with the New Britain island arc. This oblique collision has been completed along its western extremity and has resulted in the fold and thrust belt on the island of New Guinea. Dr. Shor and colleagues Drs. Silver and Reed from UC Santa Cruz will conduct a 32-day survey of the Solomon Sea to study the structural and sedimentologic processes involved in this collision process, the features of which are a contemporary analog to the Laramide orogeny that formed the eastern Rocky Mountains. 23 days of seafloor imaging will be conducted with SeaMarcII; these data will be supplemented by simultaneous collection of single channel airgun profiles, 3.5 KHz echosounding records, magnetics and gravity. 7 days will be devoted to collecting piston cores, and during 2 additional days, bottom photographs will be collected. Participants from the Geological Survey of Papua New Guinea and the Australian National University will join the cruise and conduct subsequent analyses. The entire data set will make possible the comparison to structures and sedimentation observed onshore in the fold and thrust belt of New Guinea, and provide better understanding of orogenic processes.

所罗门海是一个小洋盆，位于所罗门群岛以北1000公里处。 澳大利亚东北部的大堡礁， 作为新几内亚东部的巴布亚半岛而消失 与新不列颠岛弧相撞 该倾斜 碰撞已经完成沿着其西端， 导致了纽岛上的褶皱和冲断带 几内亚. Shor博士及其同事加州大学的银博士和Reed博士 圣克鲁斯将对所罗门海进行为期32天的调查， 研究所涉及的结构和沉积过程 这种碰撞过程的特点是， 拉腊米山脉的同时代类似物， 落基山脉东部 23天的海底成像将是 使用SeaMarcII进行;这些数据将由 同时采集单通道气枪剖面，3.5 千赫回声测深记录、磁力和重力。 7天的 致力于收集活塞芯，并在2个额外的 天，底部的照片将被收集。 的与会者 巴布亚新几内亚地质调查局和澳大利亚 国立大学将加入邮轮，并进行后续 分析。 整个数据集将使 与1999年在陆地上观测到的结构和沉积物的比较 新几内亚的褶皱和冲断带， 了解造山过程。