Analysis and Interpretation of Deep Seismic Reflection Profiles Across the Basin and Range-Colorado Plateau Transition Zone

盆山-科罗拉多高原过渡带深部地震反射剖面分析与解释

• 批准号: 8720906
• 负责人: George Thompson
• 金额: $ 4.87万
• 依托单位: Stanford 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: 1988-02-01 至 1990-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8720906&HistoricalAwards=false
• 关键词: Analysis; Interpretation; Deep; Seismic; Reflection

The objective of this research is an intensive study of the crust in the transition zone from the stable Colorado Plateau to the extended Basin and Range province. We will rely primarily on recently collected seismic reflection data - data collected as a "piggyback" experiment to the U.S. Geological Survey PACE (Pacific to Arizona Crustal Experiment) refraction survey in Arizona -- although the data will be supplemented and integrated with existing COCORP (Consortium on Continental Reflection Profiling) data. The four areas of proposed research include: 1) a P-wave structural interpretation of the transiton zone emphasizing the lower crust and Moho, 2) an analysis of the unusually reflective upper crust seen on indsutry and COCORP data, as well as the new data, 3) a study of wide-angle and fan profiles collected in the piggyback experiment and 4) analysis and interpretation of 3- component data from the new experiment with an emphasis on crustal composition derived from P and S velocities. The piggyback reflection data are uniquely suited to study the transition zone because of the excellent data quality and close trace spacing of the survey.

本研究的目的是深入研究 从稳定的科罗拉多高原到 延伸的盆地山脉省 我们将主要依靠 最近收集的地震反射数据-作为 美国地质调查局PACE（太平洋）的“搭载”实验 亚利桑那州地壳实验）折射调查在亚利桑那州- 尽管数据将得到补充和整合， COCORP（Consortium on Continental Reflection Profiling） 数据 建议研究的四个领域包括：1）P波 过渡带的构造解释， 下地壳和莫霍面; 2）异常反射波分析 在工业和COCORP数据上看到的上地壳，以及新的 数据，3）对收集的广角和扇形剖面的研究 背驮实验和4）3- 来自新实验的成分数据，重点是地壳 由P和S速度导出的成分。 背驮 反射数据是唯一适合研究过渡区的 由于出色的数据质量和紧密的道间距， 调查。