RUI: Collaborative Proposal - Magnetotelluric Profiling Along the California Portion of the PACE Transect

太平洋到亚利桑那地壳实验（PACE）是一个多学科的样带，它跨越了位于南加州的一个古老的岩浆弧、一个大陆裂谷和一个伸展地体。pi将沿着这条样带收集大地电磁数据，以加强已计划的地震实验。在加州东部的CALCRUST线和亚利桑那州的COCORP线上已经发现了突出的中地壳反射体。如果这些反射带是由流体、部分熔体或导电矿物（如糜棱岩带中的石墨）引起的，那么大地电磁测深将对这些反射带敏感。因此，电测量将有助于识别地壳中部结构。此外，在半岛山脉的测量将有助于确定大陆和海洋地壳之间的旧缝合带。大地电磁测量将与商业承包商签订合同，以确保尽可能获得最佳数据，并将使用最新的二维反演和三维正演模型来解释数据。这项调查的目的是为未来可能的EMSOC实验进行侦察。

The Pacific to Arizona Crustal Experiment (PACE) is a multidisciplinary transect which crosses an old magmatic arc, a continental rift, and an extensional terrane all located in southern California. The PIs will collect magnetotelluric data along this transect to enhance the seismic experiments already planned. Prominent mid-crustal refectors have already been found on CALCRUST lines in eastern California and COCORP lines in Arizona. Magnetotelluric soundings will be sensitive to these reflective zones if they are cause by fluid, partial melt, or conductive minerals such as graphite in mylonitic zones. Thus, electrical measurements will help identify midcrustal structure. Further, measurements in the Peninsular Ranges will help locate the old suture zone between continental and oceanic crust. The magnetotelluric survey will be contracted to a commercial contractor in order to guarantee the best data possible and will use the latest 2-D inversions and 3-D forward modeling to interpret the data. This survey is designed as a reconnaissance for a possible future EMSOC experiment.