Utah Geochronology Project

NOTE: This dataset holds 'static' data that we don't expect to change. We have removed it from the SDE database and placed it in ArcGIS Online, but it is still considered part of the SGID and shared on opendata.gis.utah.gov. The Utah Geochronology Database contains ages and related dating information of sampled geologic materials (soil and rock) using argon (40Ar/39Ar), optically-stimulated luminescence (OSL), or radiocarbon (14C) dating methods and were analyzed for a variety of geologic-related projects by the UGS and others. These ages were used in fault trench investigations to determine the timing of past earthquakes and to develop other paleoseismic parameters, in the dating of basalt flows for eruption histories and in dating fault movement, and similar projects. Since geochronologic methods have significantly evolved and improved through time, older data is often not as reliable or usable as more recently dated materials. The user should use caution in using this data, as significant knowledge and experience is often needed to interpret and apply geochronologic data to projects correctly. As the database is expanded in the future, age results from other geochronologic dating methods are anticipated to be added. Various geochronologic data from geologic mapping projects may be found here. Donations of geochronologic data in Utah are appreciated, so that these data can be permanently archived and discoverable and available to all users. Contact the UGS for more details. The GeochronProject feature class contains metadata specific to each geochronology project, including the organization and Principal Investigator who conducted the project (where known).注意：本数据集存储的是预计不会发生变更的“静态”数据。我们已将其从SDE数据库迁移至ArcGIS Online，但它仍属于SGID的组成部分，且会在opendata.gis.utah.gov平台上对外共享。 犹他州年代学数据库（Utah Geochronology Database）收录了采用氩-氩（⁴⁰Ar/³⁹Ar）、光释光（Optically-Stimulated Luminescence, OSL）或放射性碳（¹⁴C）测年方法对采样地质物质（土壤与岩石）测定得到的年代及相关测年信息，此类数据由犹他地质调查局（UGS）及其他机构为各类地质相关项目分析获取。 这些年代数据曾被应用于断层探槽调查，以确定过往地震的发生时间并构建古地震相关参数；同时也被用于玄武岩流喷发历史测年、断层活动年代测定等同类地质项目。 由于年代学方法随时间推移得到了显著演进与优化，早期数据的可靠性与可用性往往不及新近测定的地质样品。使用者在使用本数据集时需格外审慎，因为正确解读并将年代学数据应用于实际项目，通常需要深厚的专业知识与丰富的实践经验。 随着本数据库未来的扩容升级，预计还将新增其他年代学测年方法得到的年代结果。本平台亦可获取各类地质填图项目产生的年代学数据。我们诚挚欢迎各界捐赠犹他州境内的年代学数据，以使此类资料能够得到永久归档、公开检索并面向所有用户开放使用。如需了解更多详情，请联系UGS。 GeochronProject要素类（feature class）包含每个年代学项目的专属元数据，其中涵盖开展项目的机构与项目首席研究员（如可获取相关信息）。