Soil geochemical and mineralogical survey of the conterminous United States: a project retrospective

IF 1 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Geochemistry-Exploration Environment Analysis Pub Date : 2022-09-15 DOI:10.1144/geochem2022-031

David B. Smith

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Abstract

From 2007 to 2010, the U.S. Geological Survey (USGS) conducted a low-density (1 site per 1,600 km 2 ), soil geochemical and mineralogical survey of the conterminous United States (US) (approximately 8 million km 2 ). This project was initiated to address the lack of a national soil geochemical database that was a critical need for state and Federal environmental agencies, public health specialists, and those engaged in risk assessment of contaminated land. Sampling and analytical protocols were developed in consultation with stakeholders at a 2003 workshop and pilot studies were carried out from 2004 to 2007. Sampling began in 2007 and concluded in 2010. Chemical and mineralogical analyses were completed in 2013, and the data sets were released to the public that same year. Geochemical and mineralogical maps were published in 2014, and an interactive website was released in 2019. The author was Project Chief for this effort throughout the lifetime of the study. The evolution of the project is discussed from its inception through the publication of results and its impact. The lessons learned during the project are reviewed in the hope that applied geochemists who undertake such broad-scale geochemical mapping projects in the future will find them useful. Thematic collection: This article is part of the Continental-scale geochemical mapping collection available at: https://www.lyellcollection.org/topic/collections/continental-scale-geochemical-mapping

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美国邻近地区土壤地球化学和矿物学调查：项目回顾

从2007年到2010年，美国地质调查局（USGS）对毗邻的美国（约800万平方公里）进行了低密度（每1600平方公里1个地点）、土壤地球化学和矿物学调查。启动该项目是为了解决缺乏国家土壤地球化学数据库的问题，这是州和联邦环境机构、公共卫生专家以及从事污染土地风险评估的人员的迫切需要。在2003年的一次研讨会上，与利益攸关方协商制定了采样和分析方案，并在2004年至2007年进行了试点研究。采样从2007年开始，到2010年结束。化学和矿物学分析于2013年完成，数据集于同年向公众发布。地球化学和矿物学地图于2014年发布，互动网站于2019年发布。在整个研究过程中，作者是这项工作的项目负责人。从项目开始到公布结果及其影响，讨论了项目的演变过程。回顾了该项目中吸取的经验教训，希望未来从事此类大规模地球化学测绘项目的应用地球化学家能发现这些经验教训是有用的。专题集：本文是大陆尺度地球化学制图集的一部分，可在以下网站获取：https://www.lyellcollection.org/topic/collections/continental-scale-geochemical-mapping

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来源期刊

Geochemistry-Exploration Environment Analysis 地学-地球化学与地球物理

CiteScore

3.60

自引率

16.70%

发文量

审稿时长

1 months

期刊介绍： Geochemistry: Exploration, Environment, Analysis (GEEA) is a co-owned journal of the Geological Society of London and the Association of Applied Geochemists (AAG). GEEA focuses on mineral exploration using geochemistry; related fields also covered include geoanalysis, the development of methods and techniques used to analyse geochemical materials such as rocks, soils, sediments, waters and vegetation, and environmental issues associated with mining and source apportionment. GEEA is well-known for its thematic sets on hot topics and regularly publishes papers from the biennial International Applied Geochemistry Symposium (IAGS). Papers that seek to integrate geological, geochemical and geophysical methods of exploration are particularly welcome, as are those that concern geochemical mapping and those that comprise case histories. Given the many links between exploration and environmental geochemistry, the journal encourages the exchange of concepts and data; in particular, to differentiate various sources of elements. GEEA publishes research articles; discussion papers; book reviews; editorial content and thematic sets.