A geological model. Albian and Neocomian aquifers in the Paris Basin (2014). © BRGM

Examples of GDM uses

11.15.2016
The GDM Suite is a set of efficient tools to display, develop and model your data on soils and subsoils. See below for application examples.

Geological modelling

Exemple d'utilisation du logiciel GDM

A geological model. Albian and Neocomian aquifers in the Paris Basin. © BRGM 2014.
Modelled with GDM-MultiLayer,  under the AESN-BRGM-DRIEE agreement, 2013-2018. This geological model includes the following formations: Jurassic roof, Neocomian sands, impermeable Barremian Aptian levels, Albian sands, Gault clay, Cenomanian chalk and sands, chalk overburden.

Exemple d'utilisation du logiciel GDM

Geological model of Tertiary formations in the Paris basin. © BRGM 2014
Model produced under the RGF programme (French Geological Reference Platform). The construction of this model enabled reinterpretations of logs from the subsoils databank using sequence stratigraphy concepts.

Natural risks

Exemple d'utilisation du logiciel GDM

Model and display of potential sinkhole formation in the abandoned mine workings of Savonnières en Perthois. © BRGM 2014.
Models of geological formations are built up from operational data and available core samples.From the thickness and mechanical properties of formations, it is possible to estimate the theoretical maximum height below the surface that could be reached by a cavity that forms when a mine structure collapses. The height is shown by the red lines on the 3D display. When these lines cross the topographic surface, a sinkhole may form. These results contributed to the map of local sinkhole risks published in the BRGM/RP- 63995-FR report.

Exemple d'utilisation du logiciel GDM

View of potential sinkhole formation in the abandoned mine workings of Savonnières en Perthois. © BRGM 2014.

Exemple d'utilisation du logiciel GDM

View of potential sinkhole formation in the abandoned mine workings of Savonnières en Perthois. © BRGM 2014.

Mineral resources

Exemple d'utilisation du logiciel GDM

A nickel deposit. 3D views in the geological model. © BRGM 2014
The formations shown are (from bottom to top): Bedrock, Saprolite, Transition, Yellow laterite, Red laterite, Lateritic crust.

Exemple d'utilisation du logiciel GDM

A nickel deposit. 3D view in the geological model and display of core samples. © BRGM 2014
The formations shown are (from bottom to top): Bedrock, Saprolite, Transition, Yellow laterite, Red laterite, Lateritic crust.

Exemple d'utilisation du logiciel GDM

A nickel deposit. 3D view in the geological model showing the roof surface of each formation and core samples. © BRGM 2014
The formations shown are (from bottom to top): Bedrock, Saprolite, Transition level, topography.

Exemple d'utilisation du logiciel GDM

A nickel deposit. 3D view of the Saprolite base. © BRGM 2014.

Exemple d'utilisation du logiciel GDM

A nickel deposit. A cross-section in the geological model. © BRGM 2014
The formations modelled are: Bedrock, Saprolite, Transition, Yellow laterite, Red laterite, Lateritic crust.

Exemple d'utilisation du logiciel GDM

A nickel deposit. A cross-section in the geological model. © BRGM 2014
The formations modelled are: Bedrock, Saprolite, Transition, Yellow laterite, Red laterite, Lateritic crust.

Water resources

Exemple d'utilisation du logiciel GDM

Geological model of northern Aquitaine (MONA model). © BRGM 2006.Turonian, Coniacian-Santonian and Campanian aquifers. GDM MultiLayer.
Study carried out under the BRGM 2005-EAU-C08 public service projects. 2002-2006 agreement on groundwater management in the Aquitaine region between French state, the Aquitaine regional authority and the BRGM, with financial support from the Adour-Garonne Water Agency and EU-ERDFReport: BRGM/RP-55242-FR.
The geological model covers over 900 boreholes and an area of almost 250km*250km, including about eighty 1/50 000 geological maps. As well as core samples, outcrop contacts on these 80 geological maps are also incorporated in the model.

Exemple d'utilisation du logiciel GDM

Geological model of northern Aquitaine (MONA model). © BRGM 2006.Turonian, Coniacian-Santonian and Campanian aquifers. GDM MultiLayer.
Study carried out under the BRGM 2005-EAU-C08 public service projects. 2002-2006 agreement on groundwater management in the Aquitaine region between the French state, the Aquitaine regional authority and the BRGM, with financial support from the Adour-Garonne Water Agency and EU-ERDFReport: BRGM/RP-55242-FR.
The geological model covers over 900 boreholes and an area of almost 250km*250km, including about eighty 1/50 000 geological maps. As well as core samples, outcrop contacts on these 80 geological maps are also incorporated in the model.

Exemple d'utilisation du logiciel GDM

Geological model of northern Aquitaine (MONA model). © BRGM 2006.Turonian, Coniacian-Santonian and Campanian aquifers. GDM MultiLayer.
Study carried out under the BRGM 2005-EAU-C08 public service projects. 2002-2006 agreement on groundwater management in the Aquitaine region between the French state, the Aquitaine regional authority and the BRGM, with financial support from the Adour-Garonne Water Agency and EU-ERDFReport: BRGM/RP-55242-FR.
The geological model covers over 900 boreholes and an area of almost 250km*250km including about eighty 1/50 000 geological maps. As well as core samples, outcrop contacts on these 80 geological maps are also incorporated in the model.

Exemple d'utilisation du logiciel GDM

Chalk water table in the Centre Region. © BRGM 2009.
3D view of the the piezometric surface, piezometres and the hydrographic system.

Exemple d'utilisation du logiciel GDM

Chalk water table in the Centre Region. © BRGM 2009.
3D view of the topographic surface and piezometers.

Exemple d'utilisation du logiciel GDM

Exemple d'utilisation du logiciel GDM

Exemple d'utilisation du logiciel GDM

Chalk water table in the Centre Region. © BRGM 2009.
Tools for checking data consistency: map showing the position of piezometers and points in the river linked to the water table. Cross-section showing the topographic surface, piezometers and the interpolated piezometric surface before correction.

Exemple d'utilisation du logiciel GDM

Chalk water table in the Centre Region. © BRGM 2009.
Piezometric map produced by geo-statistical interpolation.

Exemple d'utilisation du logiciel GDM

Exemple d'utilisation du logiciel GDM

Chalk water table in the Centre Region. © BRGM 2009.
Tools for data analysis: variogramme and histogramme of piezometric levels.

Exemple d'utilisation du logiciel GDM

Geological model of the Avre basin. © BRGM 2014.GDM MultiLayer.
The geological model covers 2900 km²,9 sedimentary formations and more than 500 boreholes.
This model was produced under an an agreement between the Seine-Normandy water agency, Eau de Paris and the BRGM to develop a tool to manage water sampling in the Avre basin.

Exemple d'utilisation du logiciel GDM

Geological model of the Quézac area (extract). © BRGM 2006.GDM-MultiLayer
This 3D view shows the bedrock roof (in grey), the Triassic roof (in pink) and a loop of the River Tarn (in blue).
The model covers some wells, the main faults intersecting the zone, outcrops from the 1/50 000 geological map and the results of geophysical investigations.
Study conducted under a partnership with Nestlé Water Services and Nestlé Waters France.

BRGM - 3 avenue Claude-Guillemin - BP 36009 45060 Orléans Cedex 2 - France Tel.: +33 (0)2 38 64 34 34