Cosmogenic Dating of Paleoearthquakes: Implications for Studies of Recurrence, Clustering and Fault Segmentation

古地震的宇宙成因测年：对复发、聚类和断层分段研究的启示

• 批准号: 9903227
• 负责人: Marek Zreda
• 金额: $ 18万
• 依托单位: University of Arizona
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-11-01 至 2005-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9903227&HistoricalAwards=false
• 关键词: Cosmogenic; Dating; Paleoearthquakes; Implications; Studies

9903227ZredaDetermination of ages of paleoearthquakes on faults is important for studies of earthquake recurrence intervals, temporal clustering, fault segmentation and other aspects of brittle failure. However, chronology of paleoearthquakes is difficult to determine because landforms and deposits produced by earthquakes are difficult to date accurately by standard geochronological methods. This project will further test and implement a new cosmogenic nuclide method of dating fault scarps, using selected scarps in the Great Basin. Results are expected to advance knowledge of fault recurrence behavior and to help evaluate dating methodology.

断层上古地震年龄的测定对于研究地震复发间隔、时间丛集、断层分段性和脆性破坏等方面具有重要意义。 然而，古地震的年代学很难确定，因为地震产生的地形和沉积物很难用标准的地质年代学方法准确地确定年代。 该项目将利用大盆地的某些断层崖，进一步测试和实施一种测定断层崖年代的宇宙成因核素新方法。 预计结果将推进故障复发行为的知识，并帮助评估测年方法。