Testing Models of Simple Sheer Deformation during the Rift- Transition in the South China Sea

南海裂谷转变期间简单剪切变形模型的测试

• 批准号: 9819195
• 负责人: Peter Clift
• 金额: $ 11.75万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-15 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819195&HistoricalAwards=false
• 关键词: Testing; Models; Simple; Sheer; Deformation

The PIs will test the hypothesis of simple shear of extension and the "upper plate paradox" through a mass-balance analysis exercise across two conjugate margins. South China Sea has well-defined conjugate margins with well known spreading history and a network of seismic data and wells. They will analyze the South China Sea margin and describe the deformation on matching across-margin profiles of the conjugate Palawan margin. They will study the sediment-loaded subsidence rate of the pre-rift basement from well-log data and the degree of crustal extension from MCS sections across the margins. Forward modeling of basin formation will identify whether the observed amounts of subsidence are compatible with uniform extension models.

研究员将通过两个共轭边缘的质量平衡分析来检验伸展的简单剪切假设和“上板悖论”。 中国南海具有明确的共轭边缘，具有众所周知的扩张历史和地震数据和威尔斯网络。 他们将分析南中国海边缘，并在共轭巴拉望边缘的匹配跨边缘剖面上描述变形。 他们将根据测井数据研究断裂前基底的沉积物沉降速率，并根据MCS剖面研究边缘的地壳伸展程度。 盆地形成的正演模拟将确定观测到的沉降量是否与均匀伸展模型相一致。