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Drone Geologic Mapping of an Active Sand and Gravel Quarry, Desoto County, Mississippi

机译：无论是主动沙子和砾石猎物，Desotsippi县

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Aerial drone photography of an active pit within a sand and gravel quarry in DeSotoCounty, Mississippi, was conducted to better understand the Upland Complex, which is a high-levelPliocene terrace of the Mississippi River. The Upland Complex is of great interest economically, as itis the primary source of sand and gravel for Memphis, Tennessee and the surrounding region. The pitdimensions were approximately 820 ft (250 m) by 655 ft (200 m) and 79-ft (24 m) deep upon completionof the mining. Eight 3-D models of the pit were made at different times to illustrate the miningprogression. Oblique and horizontal stereo aerial photography of the highwalls was conducted toproduce 3-D models and high-resolution photomosaics of the highwalls for geologic mapping andinterpretation. The mapped highwall geology included Pliocene Mississippi River bars consisting ofsand, sand and gravel, and gravel ranging in thickness from 2 ft (0.6 m) to 32.8 ft (10 m), with variablecross-bed dip directions suggesting a meandering river environment of deposition. Pleistoceneloess overlies the Pliocene sediment. The highwalls also revealed northerly-striking late Plioceneor Pleistocene tectonic folding, faulting, and probable earthquake liquefaction in northwesternMississippi, where no Pliocene or Quaternary tectonic deformation had previously been reported.This study demonstrated Drone aerial photography as a quick, low cost, and safe means to studypoorly accessible open-pit mining and to help understand the geology of the lower MississippiRiver Valley.
机译：Mississippi在DesotoCounty的沙滩和砾石猎物内有活跃的坑的空中无人机摄影，是为了更好地了解高地复合体，这是密西西比河的高级平板露台。高地复合体在经济上具有很大的兴趣，作为孟菲斯，田纳西州和周围地区的沙子和砾石的主要来源。在挖掘完成后，脱硫约为820英尺（250米）和79英尺（24米）的79-FT（24米）。在不同时间进行了八种3d模型，以说明挖掘。倾斜和水平立体电影的高墙的俯视三级3-D模型和高墙的高分辨率光学塑料，用于地质映射和诠释。映射的高墙地质包括专业女主角密西西比河酒吧，砂砾和砾石，厚度从2英尺（0.6米）至32.8英尺（10米）的砾石，曲折床浸型方向暗示曲折的沉积河流环境。 Pleistoceneloess覆盖了全烯沉积物。 Highwalls还揭示了Northly-interliking的晚期Pleistocene构造折叠，断层和可能的地震液化在西北部，其中先前没有报道任何基础或第四纪构造变形。本研究证明了无人机的空中摄影作为快速，低成本和安全的手段为了播放露天开采，帮助了解下密西西比亚山谷的地质。

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