GeoFrame: A Science Workshop on the Lewis & Clark Megaswath (Cascadia-Northern Rockies-Black Hills)

GeoFrame计划将产生一个横跨美国大陆的海岸到海岸的地质带，解决有关形成，稳定和修改大陆地壳的基本过程的主要科学问题，使用美国地壳和上地幔的4-D（空间和时间）可视化。 我们设想了一个~100 km宽或更宽的被动源条带，其间距比USAray Bigfoot部署所使用的70 km间距显著减小。 为了提供更高的地壳分辨率，地质举措将在当地增加活动源部分，并包括地质年代学和大地电磁法研究，以便充分结合地质和地球物理方法。 这些研究领域将与计划中的美国阵列部署协调进行，以优化研究成果，并最大限度地发挥外联潜力和全国范围的研究机会。

The GeoFrame initiative will produce a coast-to-coast geologic swath across the conterminous US that addresses major scientific questions about the fundamental processes that form, stabilize and modify the continental crust, using 4-D (space and time) visualization of the US crust and uppermost mantle. We envision a ~100 km wide or broader passive source swath with a significantly reduced spacing from the 70 km spacing utilized by the USArray Bigfoot deployment. To provide greater crustal resolution, the geologic initiative would locally add active-source components, as well as include geochronologic and MT studies, allowing for the full integration of geological and geophysical approaches. The research areas would proceed in concert with planned USArray deployment to optimize research outcome and to maximize the outreach potential and country-wide research opportunities.