Utah Geochronology Radiocarbon

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 GeochronRadiocarbon feature class contains metadata specific to each radiocarbon sample in the database. Not all fields will contain data, due to the lack of available information, or the field may not apply to the specific sample.注意：本数据集存储的是预期不会发生变更的静态数据。我们已将其从SDE数据库移出并上传至ArcGIS Online，但它仍属于SGID的组成部分，且仍在opendata.gis.utah.gov平台上共享。犹他州年代学数据库（Utah Geochronology Database）收录了采用氩同位素（⁴⁰Ar/³⁹Ar）、光释光（Optically Stimulated Luminescence, OSL）以及放射性碳（¹⁴C）定年方法，对采样获得的地质物质（土壤与岩石）测得的年代及相关测年信息，相关分析由UGS及其他机构针对各类地质相关项目完成。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、构建其他古地震参数；同时也被用于玄武岩流喷发历史定年、断层活动年代测定等类似项目。随着年代学方法随时间不断演进与完善，早期数据的可靠性与可用性往往不及新近测定的样品。使用者在使用本数据时需格外谨慎，因为正确解读并将年代学数据应用于项目通常需要丰富的专业知识与实践经验。随着本数据库未来的扩容，预计还将新增其他年代学测年方法得到的年代结果。本库亦可获取各类地质填图项目产生的年代学数据。我们欢迎犹他州境内的年代学数据捐赠，以便这些数据能够得到永久归档、公开检索并可供所有用户使用。如需了解更多详情，请联系UGS。GeochronRadiocarbon要素类包含本数据库中每一个放射性碳样品的专属元数据。由于可用信息不足或该字段不适用于特定样品，并非所有字段都会包含数据。