A Field and Theoretical Study of Fabric and Flow in Brittle Shear Zones

脆性剪切区织物和流动的现场和理论研究

• 批准号: 9417759
• 负责人: Darrel Cowan
• 金额: $ 15.18万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-01-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9417759&HistoricalAwards=false
• 关键词: Field; Theoretical; Study; Fabric; Flow

9417759 Cowan Brittle shear zones are common features in many tectonic settings, yet in spite of the importance of brittle shear zones and the probability that slip along some of them was seismogenic, there is as yet no unifying kinematic model relating the mesoscopic fabrics of the fault rocks within them to the strain paths or flow types characterizing shear zone deformation. This project will combine field data with extensive modeling to help develop and test the hypothesis that general coaxial shear is the predominant flow type as it is in ductile shear zones. Results are expected to improve the ability to interpret and kinematically analyze fabrics in brittle shear zones.

9417759 Cowan脆性剪切区是许多构造环境中的常见特征，尽管脆性剪切区的重要性以及沿着其中一些沿着其中的某些裂开的可能性是地震生成的，但尚无统一的运动学模型，与中学模型有关。在其中岩石到应变路径或流动类型，表征了剪切区变形。 该项目将将现场数据与广泛的建模相结合，以帮助开发和测试一个假设，即通用同轴剪切是在延性剪切区中的主要流动类型。 预计结果将提高解释和运动学分析脆性剪切区域织物的能力。