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  • GEMAS (Geochemical Mapping of Agricultural and Grazing Land Soil in Europe) is a cooperative project between the Geochemistry Expert Group of EuroGeoSurveys and Eurometeaux. In total, more than 60 international organisations and institutions worldwide were involved in the implementation of the project. During 2008 and 2009, a total of 2219 samples of agricultural (arable land soils, 0 – 20 cm, Ap samples) and 2127 samples of grazing land (pasture land soils, 0 – 10 cm, Gr samples) soil were collected at a density of 1 site/2 500 km² each from 33 European countries, covering an area of 5,600,000 km². All samples were analysed for 52 chemical elements after an aqua regia extraction, 41 by XRF (total), TC and TOC. In addition, the agricultural soil samples were analysed for 57 elements in a mobile metal ion (MMI®) extraction and Pb isotopes. All analytical results were subject to tight external quality control procedures. The GEMAS project thus provides for the first time fully harmonised data for element concentrations and bioavailability of the elements at the continental (European) scale. The downloadable files present the areal distribution of the element contents determined by different analytical methods in the shape of colour shaded contour maps with a classification in 7 and 72 levels each.

  • BGR conducted an airborne survey in the region of Finsterwalde (Brandeburg) as part of the BGR project D-AERO-Finsterwalde. This project is a pilot study to survey the "Finsterwalder Restlochkette" with the BGR airborne geophysical standard measuring system. The former lignite mining area is located between Finsterwalde and Lauchhammer in Lower Lusatia about 50 km southwest of Cottbus. The size of the area is about 260 km². The area was surveyed with 10 flights totalling to 1741 line-km (40,153 survey points). The nominal separation of the 117 NW-SE lines and 59 NE-SW tie lines was 250 m and 625 m, respectively. The ASCII datafile contains the raw data as well as the processed HRD data.

  • BGR conducted an airborne survey in the region of Finsterwalde (Brandeburg) as part of the BGR project D-AERO-Finsterwalde. This project is a pilot study to survey the "Finsterwalder Restlochkette" with the BGR airborne geophysical standard measuring system. The former lignite mining area is located between Finsterwalde and Lauchhammer in Lower Lusatia about 50 km southwest of Cottbus. The size of the area is about 260 km². The area was surveyed with 10 flights totalling to 1742 line-km (40,153 survey points). The nominal separation of the 117 NW-SE lines and 59 NE-SW tie lines was 250 m and 625 m, respectively. The maps display the total count, the (equivalent) content of potassium, uranium and thorium as well as the exposure rate at ground.

  • BGR conducted an airborne survey in the region of Finsterwalde (Brandeburg) as part of the BGR project D-AERO-Finsterwalde. This project is a pilot study to survey the "Finsterwalder Restlochkette" with the BGR airborne geophysical standard measuring system. The former lignite mining area is located between Finsterwalde and Lauchhammer in Lower Lusatia about 50 km southwest of Cottbus. The size of the area is about 250 km². The area was surveyed with 8 flights totalling to 1263 line-km (298,642 survey points). The nominal separation of the 107 NW-SE lines and 35 NE-SW tie lines was 250 m and 625-3125 m, respectively. The maps display the geophysical parameters apparent resistivity, apparent depth and centroid depth derived from the HEM data at the six frequencies of the HEM system (0.4 - 130 kHz). Furthermore, vertical slices were derived from layered-earth models (resistivities and thicknesses of six or twenty model layers) for each flightline and also, based on twenty-layer models, ten horizontal slices at 45 - 125 m asl (every 10 m) plus 90 m asl.

  • GEMAS (Geochemical Mapping of Agricultural and Grazing Land Soil in Europe) is a cooperative project between the Geochemistry Expert Group of EuroGeoSurveys and Eurometeaux. In total, more than 60 international organisations and institutions worldwide were involved in the implementation of the project. During 2008 and 2009, a total of 2219 samples of agricultural (arable land soils, 0 – 20 cm, Ap samples) and 2127 samples of grazing land (pasture land soils, 0 – 10 cm, Gr samples) soil were collected at a density of 1 site/2 500 km² each from 33 European countries, covering an area of 5,600,000 km². In addition to the chemical element contents, soil properties and soil parameters such as pH, particle size distribution, effective cation exchange capacity (CEC), MIR spectra and magnetic susceptibility were investigated in the samples and some coefficients were calculated. The downloadable files present the areal distribution of the determined PNEC (predicted no effect concentration) for Molybdenum (Mo) in the shape of colour shaded contour maps.

  • GEMAS (Geochemical Mapping of Agricultural and Grazing Land Soil in Europe) is a cooperative project between the Geochemistry Expert Group of EuroGeoSurveys and Eurometeaux. In total, more than 60 international organisations and institutions worldwide were involved in the implementation of the project. During 2008 and 2009, a total of 2219 samples of agricultural (arable land soils, 0 – 20 cm, Ap samples) and 2127 samples of grazing land (pasture land soils, 0 – 10 cm, Gr samples) soil were collected at a density of 1 site/2 500 km² each from 33 European countries, covering an area of 5,600,000 km². All samples were analysed for 52 chemical elements after an aqua regia extraction, 41 by XRF (total), TC and TOC. In addition, the agricultural soil samples were analysed for 57 elements in a mobile metal ion (MMI®) extraction and Pb isotopes. All analytical results were subject to tight external quality control procedures. The GEMAS project thus provides for the first time fully harmonised data for element concentrations and bioavailability of the elements at the continental (European) scale. The downloadable files present the areal distribution of the element contents determined by different analytical methods in the shape of colour shaded contour maps with a classification in 7 and 72 levels each.

  • Between 1977 and 1983, the Federal Institute for Geosciences and Natural Resources (BGR) took approx. 80,000 water samples and 70,000 sediment samples from streams and rivers in several sampling campaigns on the territory of the Federal Republic of Germany at that time and examined them geochemically. In addition to the geochemical prospection of areas with potentially deposits, the aim of the investigations was also to record indications of anthropogenic environmental pollution. The results of these investigations were published in the Geochemical Atlas of the Federal Republic of Germany (Fauth et al., 1985). The data collected within the framework of the Geochemical Atlas of the Federal Republic of Germany in 1985 is a geochemical survey of the former territory of the Federal Republic of Germany which is unique in its high sampling density. All later geochemical investigations were carried out with a much lower sampling density. This valuable and irretrievable data is now being made generally available via the BGR geoportals. In addition to the digital provision of the original data material, the texts from Fauth et al. (1985) and distribution maps produced according to the method used in 1985, the data were reprocessed using modern methods. The downloads show the distribution of Fluoride concentrations in stream waters in five different coloured point and colour shaded contour maps. In addition, the brief explanations on the element Fluoride from Fauth et al. (1985) are included.

  • The idea to represent the main features of the European Quaternary was first discussed at the Second Congress of the International Union for Quaternary Research (INQUA) held in Leningrad (St. Petersburg) in 1932. Compiled by the Federal Institute for Geosciences and Natural Resources (BGR) in cooperation with the INQUA, the International Quaternary Map of Europe 1 : 2.500.000 was finished in 1995. It is jointly published by the BGR and UNESCO. Several Quaternary features such as end moraines, ground moraine hillocks, kames, drumlins, eskers and ice border lines are represented on the map. Additionally, the map shows the directions of ice movements, limits of marine transgressions and tectonic faults. Important localities of Quaternary discovery relating to both geology and prehistory, bathymetric lines and recent deposits covering the sea floor are also indicated as well. The legend on each of the 14 map sheets is in German and, depending on the territories covered, in English, French or Russian. The general legend is placed on map sheet number 15.

  • BGR conducted in 2013-2016 the research project "ErzExploration Erzgebirge E³" together with the Helmholtz Institute Freiberg for Resource Technology (HIF) at Helmholtz-Zentrum Dresden-Rossendorf (HZDR) and the Technical University Bergakademie Freiberg (TUBAF) to explore mineral resources in the vicinity of the city of Geyer, Erzgebirge. The size of the area is about 135 km². The area was surveyed with 16 flights totalling to 1654 line-km (42,217 survey points). The nominal separation of the 189 NW-SE lines and 14 SE-NW tie lines was 100 m and 500 m, respectively. The ASCII datafile contains the raw data as well as the processed HRD data.

  • BGR's 3D web viewer allows for a visualisation of the its produced 3D subsurface models from various perspectives and camera positions by using only a web browser. Each of the geologic horizons of a model can be separately switched on and off. The information belonging to a horizon can be queried by clicking with the mouse on the displayed object. The user can chose which model data are to be exported, thereby loading the data to the own computer. Predefined camera positions give a quick access to the visualisation of a model. The web application offers essential tools to explore the 3D model such as rotation, zoom and panning functions, or adjustment of the exaggeration in vertical direction. Additionally, the user has the choice between different topographic data which can be put on top of the model. By means of the slicer function parts of the model can be blanked out, so the user gains more detailed insights into the model. Moreover, virtual boreholes and profile sections can be interactively created. Filter functions, spatial measuring tools and storing of scalable screen shots complete the functionalities. Further hints for the usage of the web application are found on the graphical user interface.

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