Active Extension in an Arc-Continent Collision, Taiwan: A GPS, Structural and Geomorphic Investigation

台湾弧形大陆碰撞中的主动延伸：GPS、结构和地貌调查

• 批准号: 9903248
• 负责人: Timothy Byrne
• 金额: $ 23.69万
• 依托单位: University of Connecticut
• 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: 1999-07-01 至 2005-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9903248&HistoricalAwards=false
• 关键词: Active; Extension; Arc; Continent; Collision

9903248ByrneExtension in active compressional orogensis is counter-intuitive but has been documented in several mountain ranges. Understanding of the circumstances under which extensional forces develop in a compressional tectonic environment is hampered in ancient examples because timing of the features commonly is not sufficiently precise to establish contemporaientry, and strain accumulation is not active. The Taiwan orogenic belt provides a unique opportunity to conduct this type of work because it is active, accessible, relatively well studied and substantial geodetic infrastructure is available, including regional-scale GPS, leveling and triangulation studies. The project includes new GPS monuments and geomorphic studies. Results include a new, integrated data set to constrain the regional-scale architecture of the orogenic belt and a modern analogue for models of extension proposed for older, more deeply eroded belts where plate kinematics are less well constrained.

[903248]活跃的挤压造山运动中的伸展作用是与直觉相反的，但在一些山脉中有记载。对伸展力在挤压构造环境中发展的情况的理解在古代的例子中受到阻碍，因为这些特征的时间通常不够精确，无法确定当代的进入，而且应变积累不活跃。台湾造山带为开展这类工作提供了一个独特的机会，因为它是活跃的、可接近的、相对较好的研究和大量的大地测量基础设施，包括区域尺度的GPS、水准和三角测量研究。该项目包括新的GPS纪念碑和地貌研究。结果包括一个新的、集成的数据集来约束造山带的区域尺度结构，以及一个现代的模拟模型，用于更古老的、侵蚀更深的、板块运动约束较少的带的扩展模型。