COLLABORATIVE RESEARCH: Tertiary Detachment and Magmatism, Milford Area, Utah

合作研究：第三纪脱离和岩浆作用，米尔福德地区，犹他州

• 批准号: 8904329
• 负责人: John Bartley
• 金额: $ 6.46万
• 依托单位: University of Utah
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-06-15 至 1992-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8904329&HistoricalAwards=false
• 关键词: COLLABORATIVE; RESEARCH; Tertiary; Detachment; Magmatism

The Sevier Desert Detachment is a major Cenozoic low-angle normal fault in western Utah that has documented offset of more than 30 kilometers. The extension of this fault to the south is unknown; therefore, there are several possible explanations, including continuation of he detachment at depth, transfer of displacement to another low-angle normal fault or termination by a transform fault. This collaboration project will investigate the Milford area, immediately south of the known extent of the detachment to determine which model most closely explains how the fault displacement varies and also to determine to what degree co-eval magmatism plays a part in extensional tectonics. Results address displacement termination mechanisms and role of magmatism which will be applicable to a wide range of extensional tectonic settings.

塞维尔沙漠支队是犹他州西部一条主要的新生代低角度正断层，已记录的偏移量超过 30 公里。 该断层向南延伸的范围未知；因此，有几种可能的解释，包括深度脱离的继续、位移转移到另一个低角度正断层或由转换断层终止。 该合作项目将调查位于已知分离范围以南的米尔福德地区，以确定哪种模型最能解释断层位移的变化，并确定共同演化岩浆作用在伸展构造中的作用程度。 结果解决了位移终止机制和岩浆作用的作用，这将适用于广泛的伸展构造环境。