LithoLex

LithoLex是美国地质调查局(USGS)维护的国家地质名称词典数据库，是美国地质单元名称和描述的国家汇编。该数据库提供地质单元的搜索功能，包括按地质年代、单位名称和地理位置进行检索。LithoLex是国家地质图数据库(NGMDB)的重要组成部分，由美国地质调查局国家合作地质制图计划支持。LithoLex is a national geological name thesaurus database maintained by the United States Geological Survey (USGS), serving as the national compilation of names and descriptions of geological units in the United States. This database provides search functionalities for geological units, including retrieval by geologic age, unit name, and geographic location. LithoLex is a critical component of the National Geologic Map Database (NGMDB), and is supported by the USGS National Cooperative Geologic Mapping Program.