Thrusting Sequence in Central Utah Foreland From Deformationof Syntectonic Basin - Margin Conglomerates

同构造盆地变形导致的犹他州中部前陆冲断层序 - 边缘砾岩

• 批准号: 9205411
• 负责人: Timothy Lawton
• 金额: $ 3.38万
• 依托单位: New Mexico State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9205411&HistoricalAwards=false
• 关键词: Thrusting; Sequence; Central; Utah; Foreland

This study will combine stratigraphic and structural mapping and palynological analyses to obtain the detailed movement history of individual thrusts in the Sevier orogenic belt of central Utah. Timing of the inception of the Sevier thrusts is presently unconstrained. Conglomeratic sediments were deformed syndespostionally by thrusts, and these conglomeratic rocks can be traced laterally into pollen-bearing fine-grained sedimentary rocks. Thus the timing of thrust inception can be obtained. The results of this study will improve our understanding of the early stages of thrust belt development in the Sevier orogen, and also in other tectonic environments.

这项研究将结合地层和构造填图以及孢粉分析，获得犹他州中部塞维尔造山带单个逆冲的详细运动史。塞维尔冲刺开始的时间目前是不受限制的。砾岩在逆冲作用下发生堆积变形，这些砾岩横向上可追溯为含花粉的细粒沉积岩。由此可以得到推力起始的时间。这一研究成果将加深我们对Sevier造山带以及其他构造环境中冲断带早期发育阶段的认识。