Evolution of Modern Intra-Arc Sedimentary Basins in the Central Philippine Archipelago

菲律宾中部群岛现代弧内沉积盆地的演化

• 批准号: 8711382
• 负责人: Daniel Karig
• 金额: --
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-12-01 至 1991-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8711382&HistoricalAwards=false
• 关键词: Evolution; Modern; Intra; Arc; Sedimentary

Intra-arc basins are important but are little-studied component of complex island arc systems at consuming plate margins. These basins commonly mark the sites of important tectonic features such as major strike-slip faults, incipient rifts, or trapped fragments of ocean crust. The lack of investigation of these basins has resulted in an inadequate appreciation of their significance, in both modern and ancient arc terrances. In this award the investigators would study several marine and non-marine intra-arc basins in the Central Philippine archipelago. They will use a combination of marine geophysical and geological tools such as SeaMarc II Sonar, Single Channel Seismic profiler, Piston corer, etc., along with land geological survey techniques. This investigation will focus on the present-day tectonic setting and detailed structural evolution of basins, as well as on their stratigraphic and sedimentologic histories, and the spatial and temporal relations between sedimentation, volcanism and tectonism. The study is intended to solve regional problems, and to contribute to the general understanding of processes of internal disruption and sedimentation in island arcs, and to develop practicable criteria for identifying intra-arc basins in ancient, accreted arc terranes. The investigators have an excellent record of working in the Philippines water and the project has very high chances of being successful.

弧内盆地是重要的，但很少研究 复杂岛弧体系在消耗板块的分量 利润率 这些盆地通常标志着重要的 构造特征，如主要的走滑断层，初期 裂缝或被困的海洋地壳碎片。 缺乏 对这些盆地的调查导致了 欣赏他们的意义，在现代和古代 弧面 在这个奖项中，研究人员将研究几个海洋 中菲律宾岛弧内盆地 群岛。 他们将结合海洋地球物理学 和地质工具，如SeaMarc II声纳，单通道 地震剖面仪、活塞取心器等，沿着陆地 地质调查技术 这次调查将集中在现今的构造 盆地的背景和详细的构造演化，以及 它们的地层学和沉积学历史， 沉积作用、火山作用、 和构造运动 该研究旨在解决区域 问题，并促进对 岛屿内部破裂和沉积过程 并制定切实可行的标准， 在古老的，增生的岛弧中的弧内盆地。 的 调查人员在以下领域的工作记录良好： 菲律宾水和项目有很高的机会， 取得成功。