Time-Transgressive Deformation Effects of Oblique Under-Thrusting of Aseismic Ridges on the Puerto Rico Trench and Island Margin: Sidescan, Seismic Reflection, Gravity

波多黎各海沟和岛缘抗震脊斜下冲的时间海侵变形效应：侧扫、地震反射、重力

• 批准号: 9504118
• 负责人: Paul Mann
• 金额: $ 14.94万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-04-15 至 2000-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9504118&HistoricalAwards=false
• 关键词: Time; Transgressive; Deformation; Effects; Oblique

9504118 Mann The Pis will carry out a sidescan bathymetry and geophysical survey of the Puerto Rico Trench (PRT) and northern slope to map the zone of active collision at the N. American/Carribean Plate boundary. Key questions to be addressed include: Does the main ridge form a boundary between more deformed and less deformed seafloor? Is it a subducting feature and how much of it is subducted? What's the relationship of thrust and strike-slip faults? The study will provide a better understanding of the seismogenic potential of this submarine deformation zone that lies within 150 km of the island of Puerto Rico. ***

Pis将对波多黎各海沟（PRT）和北坡进行侧面测深和地球物理调查，以绘制北美/加勒比板块边界活跃碰撞区域的地图。要解决的关键问题包括：主脊是否在变形较大和变形较小的海底之间形成边界？它是否是一个俯冲特征，其中有多少是俯冲的？逆冲断层与走滑断层的关系如何？这项研究将更好地了解这个位于波多黎各岛150公里范围内的海底变形带的孕震潜力。＊＊＊