DS926 Digital surfaces and thicknesses of selected hydrogeologic units of the Floridan aquifer system in Florida and parts of Georgia, Alabama, and South Carolina -- Raster surface depicting top of the glauconite marker unit

Digital surfaces and thicknesses of selected hydrogeologic units of the Floridan aquifer system were developed to define an updated hydrogeologic framework as part of the U.S. Geological Survey Groundwater Resources Program. This feature class contains a gridded surface depicting the top of the glauconite marker unit in feet relative to NGVD29.

作为美国地质调查局（U.S. Geological Survey）地下水资源计划（Groundwater Resources Program）的组成部分，研究团队针对佛罗里达含水层系统（Floridan aquifer system）内选定的水文地质单元（hydrogeologic units）构建了数字化曲面与厚度数据集，旨在形成更新后的水文地质框架。该要素类包含一幅网格化曲面，其表征了以1929国家大地垂直基准面（NGVD29）为基准、以英尺为单位的海绿石标志层（glauconite marker unit）的顶面高程。