Kink Bands in Foliated Rocks: A Field, Theoretical, and Experimental Study

叶状岩石中的扭结带：现场、理论和实验研究

• 批准号: 8804617
• 负责人: Raymond Fletcher
• 金额: $ 4.98万
• 依托单位: Texas A&M University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1990-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8804617&HistoricalAwards=false
• 关键词: Kink; Bands; Foliated; Rocks; Field

Kink bands are pervasive structures developed in foliated rocks deformed at mid to upper crustal levels, and hold the potential to provide determination of finite strain and principal stress orientation for the episode of deformation that produced them. This project will investigate the mechanics of kink band formation in foliated rocks by the integration of theoretical modeling, detailed observation of naturally-occurring kink bands, and experimentation. By relating the orientation and geometry of kink bands to the mechanical response of an anisotropic medium under states of stress, this work should provide a strong basis for the mechanical interpretation of kink bands as a tool in regional tectonic studies.

扭结带是在地壳中上水平变形的面理岩石中发育的普遍结构，有可能为产生扭结带的变形提供有限应变和主应力方向的确定。本项目将通过理论模拟、对自然形成的扭结带的详细观察和实验相结合的方法来研究面片岩中扭结带的形成机制。通过将扭结带的取向和几何与各向异性介质在应力状态下的力学响应联系起来，这项工作将为扭结带作为区域构造研究工具的力学解释提供强有力的基础。