Map based index (GeoIndex) digital geological map availability 1:50k

This layer of the GeoIndex shows the location of available 1:50000 scale digital geological maps within Great Britain. The Digital Geological Map of Great Britain project (DiGMapGB) has prepared 1:625 000, 1:250 000 and 1:50 000 scale datasets for England, Wales and Scotland. The datasets themselves are available as vector data in a variety of formats in which they are structured into themes primarily for use in geographical information systems (GIS) where they can be integrated with other types of spatial data for analysis and problem solving in many earth-science-related issues. Most of the 1:50 000 scale geological maps for England & Wales and for Scotland are now available digitally as part of the DiGMapGB-50 dataset. It integrates geological information from a variety of sources. These include recent digital maps, older 'paper only' maps, and desk compilations for sheets with no published maps.

GeoIndex的此层级展现了大不列颠境内可用的1:50000比例尺数字地质图的分布位置。大不列颠数字地质图项目（DiGMapGB）已为英格兰、威尔士及苏格兰准备了1:625000、1:250000和1:50000比例尺的数据集。这些数据集以矢量数据的形式提供，并采用多种格式，主要按主题结构化，适用于地理信息系统（GIS），以便与其他类型空间数据相结合，分析及解决众多地球科学相关的问题。英格兰与威尔士及苏格兰的大部分1:50000比例尺地质图现已作为DiGMapGB-50数据集的一部分，以数字化形式提供。该数据集整合了来自多种来源的地质信息，包括最新的数字地图、老旧的仅以纸质形式存在的地图，以及针对尚未出版地图的桌面汇编。