Experiences from 30 years of low density geochemical mapping at the subcontinental to continental scale in Europe

IF 1 4区地球科学 Q3 GEOCHEMISTRY & GEOPHYSICS

Geochemistry-Exploration Environment Analysis Pub Date : 2022-11-15 DOI:10.1144/geochem2022-030

C. Reimann

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Abstract

Experiences with 30 years of geochemical mapping at the (sub)continental scale in Europe using a wide range of different sample media are reviewed and discussed with a focus on the most recent GEMAS (GEochemical Mapping of Agricultural Soils) project. Comparing results from the different surveys it is possible to come to conclusions how geochemical surveys at the continental scale could best be designed. High analytical quality and as low detection limits as possible are key requirements. In Europe good experiences were achieved with the <2 mm fraction of soil samples and aqua regia extraction. Focus should rather be on high quality of sampling and analyses and more determined parameters than on more samples. The sample density of 1 site/2500 km 2 provides a good overview of the processes governing geochemistry at the continental scale. Results should be extensively published by the project team to get the dataset known and utilized by the wider scientific community. 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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欧洲次大陆-大陆尺度低密度地球化学制图30年的经验

回顾和讨论了30年来在欧洲(亚)大陆尺度上使用各种不同样品介质进行地球化学制图的经验，重点是最近的GEMAS(农业土壤地球化学制图)项目。比较不同测量的结果，可以得出如何最好地设计大陆尺度的地球化学测量的结论。高分析质量和尽可能低的检出限是关键要求。在欧洲，在土壤样品的<2毫米部分和王水提取方面取得了良好的经验。重点应该放在高质量的抽样和分析以及更确定的参数上，而不是更多的样本。1个地点/2500公里2的样品密度提供了在大陆尺度上控制地球化学过程的良好概述。项目团队应广泛发布结果，以使更广泛的科学界了解和利用数据集。专题集:这篇文章是大陆尺度地球化学制图集的一部分，可在: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.