Collaborative Research: Seismic, Magnetotelluric, Structuraland Petrological Studies of the Crust in Eastern Nevada to Constrain Fluid Content and Crustal Evolution

合作研究：对内华达州东部地壳进行地震、大地电磁、结构和岩石学研究，以限制流体含量和地壳演化

• 批准号: 9117512
• 负责人: Robert Hawman
• 金额: $ 7.23万
• 依托单位: University of Georgia Research Foundation Inc
• 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: 1992-07-15 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9117512&HistoricalAwards=false
• 关键词: Collaborative; Research; Seismic; Magnetotelluric; Structuraland

Multicomponent seismic reflection, magnetotelluric, structural, and petrological studies of Basin-and-Range crust will be performed to study problems of fluids in the crust including magma at the Moho, crustal inflow beneath uplifted core complexes, underplating, mid-crustal detachment zones, anisotropy, and nature of lower crust. Structural plunge of the Ruby Mountains core complex, producing greater than 10 km difference in level of exposure, offers a particularly good setting to study these problems. The combination of S-waves as well as P-waves together with conductivity in the deep crust provides a good opportunity to constrain various possibilities suggested for Basin-and-Range crust, especially because seismic and MT results complement each other in explaining conductive zones. Data acquisition involving about 1550 seismic channels is designed to optimize S-wave data for maximum resolution, and the question of resolution in seismic and MT interpretation is a major consideration in developing conclusions. Models obtained from geophysical interpretation will be integrated with petrology and structure.

多分量地震反射，大地电磁， 对盆山地壳结构和岩石学研究将 研究地壳中的流体问题，包括 莫霍面的岩浆，隆起的核杂岩下的地壳流入， 底侵作用、中地壳拆离带、各向异性和性质 下地壳。 红宝石山脉核心的构造倾伏 复杂的，产生大于10公里的水平差异， 曝光，提供了一个特别好的设置来研究这些 问题 横波和纵波的组合 地壳深处的导电性提供了一个很好的机会， 限制了盆岭型的各种可能性 地壳，特别是因为地震和MT结果相辅相成 其他解释导电区。 数据采集涉及 设计了约1550个地震道，以优化横波数据， 最大分辨率，以及地震和 大地电磁法解释是开发 结论. 从地球物理解释中获得的模型将 与岩石学和构造学相结合。