Rotations in Curved Fold and Thrust Belts: Further Paleomagnetic and Rock Fabric Studies

弯曲褶皱带和冲断带的旋转：进一步的古地磁和岩石结构研究

• 批准号: 9315988
• 负责人: Rob Van der Voo
• 金额: $ 7.55万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-03-01 至 1997-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9315988&HistoricalAwards=false
• 关键词: Rotations; Curved; Fold; Thrust; Belts

9315988 Van der Voo Major curves or bends in orogenic belts occur in most orogens, however their origin is complex and not well understood. Paleomagentic data, for example, indicate that some rotations appear to pre-date the development of major folds and thrusts, while others clearly post-date the folds. This study will combine paleomagnetic and magnetic fabric study of three representative oroclines to help define the temporal relations between folding, remagnetization, rotation and strain. Results should provide important kinematic constraints on the evolution of curved fold and thrust belts.

9315988货车德沃 造山带中的主要弯曲或弯折发生在大多数造山带中，但其成因复杂且不很清楚。 例如，古地磁数据表明，一些旋转似乎早于主要褶皱和逆冲断层的发展，而另一些则明显晚于褶皱的发展。 本研究将结合联合收割机对三个代表性造山带的古地磁和磁组构研究，以帮助确定褶皱、重磁化、旋转和应变之间的时间关系。 研究结果将为弯曲褶皱冲断带的演化提供重要的运动学约束。