Geologic Map of North Carolina 1985

The North Carolina Geological Survey (NCGS) within the Department of Environmental Quality (DEQ), in cooperation with the North Carolina Center for Geographic Information and Analysis (CGIA), developed the GIS feature service version of the Geologic Map of North Carolina 1985. The data represents the digital equivalent of the official State Geology map (1:500,000- scale), but was digitized from (1:250,000-scale) base maps. This feature service consists of four layers: Unit Examples, Structure, Dikes, and Map Units. These layers are also accompanied by two tables: Age References and Structure References. This geology is deprecated. There is currently no replacement for it that covers the whole state. We are working on a replacement that will be made available to the public in the near future (late 2026). This new data set will be in the United States Geological Survey (USGS) Geologic Map Schema (GeMS). When first released this data set will only cover a portion of the State at a scale of 1:100,000. This dataset will be dynamic and expand to cover the whole state by as early as 2032.北卡罗来纳州环境质量部（Department of Environmental Quality, DEQ）下属的北卡罗来纳州地质调查局（North Carolina Geological Survey, NCGS），联合北卡罗来纳州地理信息与分析中心（North Carolina Center for Geographic Information and Analysis, CGIA），开发了1985年版北卡罗来纳州地质图的地理信息系统（Geographic Information System, GIS）要素服务版本。该数据为官方州地质图（比例尺1:500000）的数字化等效产物，但其数字化工作基于比例尺1:250000的底图完成。该要素服务包含四个图层：单元示例（Unit Examples）、构造（Structure）、岩脉（Dikes）与图斑单元（Map Units），并配套两张属性表：年代参考文献表（Age References）与构造参考文献表（Structure References）。该套地质数据已被弃用，目前暂无覆盖全州的替代数据集。研发团队正推进替代数据集的开发工作，预计将于2026年底面向公众发布。新数据集将采用美国地质调查局（United States Geological Survey, USGS）地质图图式（Geologic Map Schema, GeMS）标准。首次发布时，该数据集仅覆盖该州部分区域，比例尺为1:100000。该数据集将采用动态更新机制，最早可于2032年完成全州范围的覆盖。